2264:
311:
111:
67:
2278:
27:
1803:
The most common use is to start a program using strace, which prints a list of system calls made by the program. This is useful if the program continually crashes, or does not behave as expected; for example using strace may reveal that the program is attempting to access a file which does not exist
424:
and many architectures on Linux (including ARM, IA-64, MIPS, PA-RISC, PowerPC, s390, SPARC) were introduced. In 2002, the burden of strace maintainership was transferred to Roland McGrath. Since then, strace gained support for several new Linux architectures (AMD64, s390x, SuperH), bi-architecture
437:
operating systems was 4.6, released in March 2011. In strace version 4.7, released in May 2012, all non-Linux code had been removed; since strace 4.13, the project follows Linux kernel's release schedule, and as of version 5.0, it follows Linux's versioning scheme as well.
2099:
tools, offering similar or more advanced features; some of the tools (although using the same or a similar name) may use completely different work mechanisms, resulting in different feature sets or results. Such tools include the following:
429:
during that period. Since 2009, strace is actively maintained by Dmitry Levin. strace gained support for AArch64, ARC, AVR32, Blackfin, Meta, Nios II, OpenSISC 1000, RISC-V, Tile/TileGx, Xtensa architectures since that time.
441:
In 2012 strace also gained support for path tracing and file descriptor path decoding. In August 2014, strace 4.9 was released, where support for stack traces printing was added. In
December 2016, syscall
1811:
flag to attach to a running process. This is useful if a process has stopped responding, and might reveal, for example, that the process is blocking whilst attempting to make a network connection.
2026:(gdb). It is, however, easier to use than a code debugger, and is a very useful tool for system administrators. It is also used by researchers to generate system call traces for later
405:, releasing his version in November 1992 with the second release following in 1993. Richard Sladkey combined these separate versions of strace in 1993, and ported the program to
1581:
Maintainership passed to Roland McGrath; added x86-64 support on Linux with support of tracing of compat processes; added support for SH and SH64 architectures on Linux;
1230:
Maintainership passed to Dmitry Levin; strace now terminates with the same exit code/signal as the traced program (if it was started by strace); added support for new
2087:' command. It shows that the current working directory is opened, inspected and its contents retrieved. The resulting list of file names is written to standard output.
397:
is a useful utility to sort of debug programs for which no source is available which unfortunately includes almost all of the Sun supplied system software.
1622:
Added support for HP PA/RISC and IA-64 architectures on Linux; added support for 32-bit UID/GID syscalls on Linux; added support for FreeBSD on x86
1706:
New maintainer, Wichert
Akkerman; added support for IBM POWER, SPARC, and ARM architectures on Linux; added support for many syscalls on Linux
2520:
378:
by Paul
Kranenburg in 1991, according to its copyright notice, and published early in 1992, in volume three of comp.sources.sun. The initial
2159:
425:
support for some of them, and received numerous additions and improvements in syscalls decoders on Linux; strace development migrated to
3499:
3520:
1943:
option provides some additional information, like endpoint addresses for sockets, paths and device major/minor numbers for files).
3581:
3567:
3615:
2096:
527:
The "(deleted)" marker of unlinked file descriptor paths is no longer interpreted as a part of a path; enhanced decoding of
2269:
3585:
290:
351:
deliveries, and changes of process state. The operation of strace is made possible by the kernel feature known as
273:
3605:
2320:
Decoding of system error messages, however, is performed in accordance with the current locale since strace 4.22.
416:
Beginning in 1996, strace was maintained by
Wichert Akkerman. During his tenure, strace development migrated to
3610:
3470:
2454:
2022:
As strace only details system calls, it cannot be used to detect as many problems as a code debugger such as
782:
3180:
3015:
2925:
2850:
1960:
Perform translation of thread, process, process group, and session IDs appearing in the trace into strace's
3447:
3300:
3240:
3225:
3165:
3150:
3075:
3000:
2985:
2910:
2895:
2835:
2745:
2730:
2694:
2432:
2012:
90:
3255:
3090:
2820:
2760:
2607:
3330:
3105:
2940:
2775:
2658:
2283:
58:
3390:
3375:
3315:
3135:
3060:
2970:
2880:
2805:
2622:
2410:
3345:
3270:
3195:
3120:
3030:
2955:
2865:
2790:
2330:
2166:
417:
410:
3360:
3285:
3210:
3045:
2524:
1961:
1879:
option enables printing of additional information, like minimum and maximum syscall execution time).
2004:
124:
1217:
option added, that combines regular and summary output; added Tile architecture support on Linux
310:
66:
2346:
option, was originally added in strace 4.5, but was never documented as it did not work properly.
873:
Added long option aliases along with possibilities for more precise option specifications via
2296:
188:
2577:
2562:
2547:
1719:
Added support for the Irix OS, m68k and DEC Alpha architectures on Linux; added support for
413:
in 1994, resulting in strace 3.0 that was announced in comp.sources.misc in mid-1994.
8:
2592:
336:
3528:
110:
3620:
143:
2366:
2075:
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f2c000
3557:
2236:
200:
2359:
755:
2709:
2492:
2477:
2458:
2000:
1258:
syscalls on Linux; added
Blackfin, AVR32, and CRIS architedcture support on Linux
285:
266:
192:
160:
131:
3391:"v43i075: strace - system call tracer for sunos, linux, svr4, solaris2, Part01/10"
2673:
2637:
2233:(10.4 and earlier), DTrace (from Solaris) and associated dtruss in 10.5 and later.
3571:
3448:"Workload characterization using lightweight system call tracing and reexecution"
2244:
2116:
2083:
The above fragment is only a small part of the output of strace when run on the '
443:
156:
3562:
3426:
476:
Implemented collision resolution for overlapping terminal/sound ioctl commands
389:
is a system call tracer for Sun(tm) systems much like the Sun supplied program
224:
2462:
2054:
open(".", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY|O_CLOEXEC) = 3
3599:
2239:
has a similar utility called StraceNT, written by Pankaj Garg, and a similar
1996:
2521:"SUNET's Index of /pub/usenet/ftp.uu.net/comp.sources.misc/volume43/strace"
2248:
2147:
2124:
2023:
754:
Stack tracing is supported for non-native personalities when compiled with
639:
Implemented System Call
Vectored ABI support on the IBM POWER architecture
363:
340:
2132:
1992:
348:
344:
3588:), a talk with an overview of strace features, given by Dmitry Levin at
2078:
write(1, "autofs\nbackups\ncache\nflexlm\ngames"..., 86autofsA
1946:
Printing stack traces, including (since strace 4.21) symbol demangling (
1744:
Initial cross-platform version by
Richard Sladkey. Includes support for
3589:
1975:
context information associated with processes, files, and descriptors (
433:
The last version of strace that had some (evidently dead) code for non-
220:
196:
44:
34:
2128:
2120:
1924:; since strace 4.22), and modify data pointed by syscall arguments (
359:
328:
324:
278:
240:
212:
184:
152:
3405:
2506:
2277:
1818:
Specifying a filter of syscall names that should be traced (via the
3478:
2179:
208:
168:
99:
16:
Diagnostic, debugging and instructional userspace utility for Linux
1935:
Extracting information about file descriptors (including sockets,
1848:
Specifying a list of file descriptors whose I/O should be dumped (
362:
systems provide other diagnostic tools similar to strace, such as
3570:, a talk with an overview of strace features and usage, given by
2216:
2189:
2170:
2016:
1972:
1912:; since strace 4.15) of the specified syscalls, inject signals (
795:
structures used in the respective System V IPC syscalls commands
421:
252:
244:
204:
172:
148:
2060:
fcntl64(3, F_GETFD) = 0x1 (flags FD_CLOEXEC)
2714:
2678:
2642:
2388:
2230:
2220:
2210:
2206:
2201:
2197:
2174:
2136:
2108:
1834:; or (since strace 4.17) using regular expression syntax, like
379:
352:
256:
248:
236:
228:
216:
901:
options; implemented various syscall statistics improvements
335:. It is used to monitor and tamper with interactions between
26:
2226:
2154:
2104:
2095:
Different operating systems feature other similar or related
2008:
1988:
1984:
812:
group to contain syscalls associated with process lifecycle:
434:
402:
375:
332:
232:
180:
176:
164:
136:
2015:, and several others; it also supports decoding of various
3575:
2301:
406:
2433:"I: changing the license of strace to a copyleft license"
2291:
2240:
2142:
2057:
fstat64(3, {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
1983:
strace supports decoding of arguments of some classes of
1739:
1714:
1701:
1689:
1672:
1660:
1643:
1630:
1617:
1605:
1593:
1576:
1564:
1552:
1531:
1511:
1499:
1486:
1474:
1437:
1425:
1413:
1401:
1389:
1369:
1352:
1319:
1307:
1283:
1266:
1225:
1184:
1174:
1161:
1151:
1141:
1131:
1121:
1111:
1101:
1091:
1081:
1071:
1061:
1051:
1041:
1031:
1021:
1011:
1001:
991:
981:
971:
961:
951:
941:
931:
921:
909:
868:
856:
803:
772:
749:
664:
647:
634:
613:
601:
580:
563:
551:
522:
501:
484:
471:
426:
2084:
669:
Added option for injecting data on syscall entry/exit (
585:
Added support for printing SELinux context mismatches (
2072:
fstat64(1, {st_mode=S_IFIFO|0600, st_size=0, ...}) = 0
1681:
decoding on Linux; Irix 64 updates; Solaris updates
1491:
Added support for 64-bit SPARC architecture on Linux.
3552:
2038:
The following is an example of typical output of the
301:
2259:
1814:Among other features, strace allows the following:
1723:option syntax; added support for syscall classes (
2342:Its shorthand for showing only successful calls,
3597:
2490:
2475:
1519:attaches to all NPTL threads on Linux only when
3406:"The ioapps IO profiler and IO traces replayer"
3373:
3358:
3343:
3328:
3313:
3298:
3283:
3268:
3253:
3238:
3223:
3208:
3193:
3178:
3163:
3148:
3133:
3118:
3103:
3088:
3073:
3058:
3043:
3028:
3013:
2998:
2983:
2968:
2953:
2938:
2923:
2908:
2893:
2878:
2863:
2848:
2833:
2818:
2803:
2788:
2773:
2758:
2743:
2728:
2707:
2692:
2671:
2656:
2635:
2620:
2605:
2590:
2575:
2560:
2452:
2430:
2408:
1648:Added support for MIPS architecture on Linux;
401:Later, Branko Lankester ported this version to
2545:
1635:Added support for IBM Z architecture on Linux
2063:getdents64(3, /* 18 entries */, 4096) = 496
1731:); added support for IPC syscalls on Sun OS
3388:
2389:"The strace Open Source Project on Open Hub"
1893:Tampering with the syscalls being executed (
808:Changed the list of syscalls covered by the
3418:
2069:close(3) = 0
2066:getdents64(3, /* 0 entries */, 4096) = 0
1932:; since strace 5.11) upon their execution.
1882:Printing relative or absolute time stamps (
1859:Counting syscall execution time and count (
1826:; using one of the predefined groups, like
1544:now attaches to all NPTL threads on Linux
309:
109:
65:
25:
3521:"IntellectualHeaven - Strace For Windows"
3424:
2111:that can trace library and system calls,
1841:Specifying a list of paths to be traced (
1807:An alternative application is to use the
787:ioctl decoding; implemented decoding of
685:syscall decoding; imlemented decoding of
3439:
2455:"Strace - an alternative syscall tracer"
3471:"XTrace - trace X protocol connections"
3397:
3598:
3445:
1908:; since strace 4.16) and error code (
1357:System call number can be supplied in
3403:
2708:Dmitry V. Levin (December 14, 2016).
2693:Dmitry V. Levin (December 14, 2016).
2476:Branko Lankester (November 5, 1992).
1798:
844:syscall decoding; added support for
781:syscall decoding; added support for
2710:"Noteworthy changes in release 4.15"
2548:"How about removing non-Linux code?"
2270:Free and open-source software portal
1953:Filtering by syscall return status (
1166:All non-Linux code had been removed
493:syscall and terminal ioctl commands
2674:"Noteworthy changes in release 4.9"
2672:Dmitry V. Levin (August 15, 2014).
2657:Dmitry V. Levin (August 15, 2014).
2638:"Noteworthy changes in release 4.7"
2606:Dmitry V. Levin (October 4, 2016).
2593:"Noteworthy changes in release 4.7"
2546:Denys Vlasenko (February 7, 2012).
681:option); added support for the new
13:
3427:"The sreplay system call replayer"
2621:Dmitry V. Levin (March 19, 2019).
2591:Dmitry V. Levin (April 20, 2012).
2561:Dmitry V. Levin (March 16, 2011).
2491:Branko Lankester (June 18, 1993).
2411:"[PATCH] Add i18n support"
449:
374:Strace was originally written for
14:
3632:
3568:"System Call Tracing with strace"
3546:
2453:Paul Kranenburg (March 2, 1992).
2329:The test suite is licensed under
840:were removed; added support for
589:option); added support for a new
3500:"dtrace(1) Mac OS X Manual Page"
2493:"second Linux release of strace"
2276:
2262:
2090:
1275:POWER-specific syscall on Linux
3513:
3492:
3463:
3382:
3367:
3352:
3337:
3322:
3307:
3292:
3277:
3262:
3247:
3232:
3217:
3202:
3187:
3172:
3157:
3142:
3127:
3112:
3097:
3082:
3067:
3052:
3037:
3022:
3007:
2992:
2977:
2962:
2947:
2932:
2917:
2902:
2887:
2872:
2857:
2842:
2827:
2812:
2797:
2782:
2767:
2752:
2737:
2722:
2701:
2686:
2665:
2650:
2636:Dmitry V. Levin (May 1, 2012).
2629:
2614:
2599:
2584:
2576:Dmitry V. Levin (May 2, 2012).
2569:
2554:
2539:
2513:
2499:
2478:"first Linux release of strace"
2336:
1916:; since strace 4.16), delays (
539:syscalls; enhanced decoding of
3374:Dmitry V. Levin (2011-03-15).
3359:Dmitry V. Levin (2012-05-02).
3344:Dmitry V. Levin (2013-06-03).
3329:Dmitry V. Levin (2014-08-15).
3314:Dmitry V. Levin (2015-03-06).
3299:Dmitry V. Levin (2015-12-21).
3284:Dmitry V. Levin (2016-05-31).
3269:Dmitry V. Levin (2016-07-26).
3254:Dmitry V. Levin (2016-10-04).
3239:Dmitry V. Levin (2016-12-14).
3224:Dmitry V. Levin (2017-02-14).
3209:Dmitry V. Levin (2017-05-24).
3194:Dmitry V. Levin (2017-07-05).
3179:Dmitry V. Levin (2017-09-05).
3164:Dmitry V. Levin (2017-11-13).
3149:Dmitry V. Levin (2018-02-13).
3134:Dmitry V. Levin (2018-04-05).
3119:Dmitry V. Levin (2018-06-14).
3104:Dmitry V. Levin (2018-08-14).
3089:Dmitry V. Levin (2018-10-30).
3074:Dmitry V. Levin (2018-12-26).
3059:Dmitry V. Levin (2019-03-19).
3044:Dmitry V. Levin (2019-05-22).
3029:Dmitry V. Levin (2019-07-12).
3014:Dmitry V. Levin (2019-09-25).
2999:Dmitry V. Levin (2019-11-28).
2984:Dmitry V. Levin (2020-02-06).
2969:Dmitry V. Levin (2020-04-07).
2954:Dmitry V. Levin (2020-06-01).
2939:Dmitry V. Levin (2020-08-06).
2924:Dmitry V. Levin (2020-09-24).
2909:Dmitry V. Levin (2020-12-14).
2894:Dmitry V. Levin (2021-02-17).
2879:Dmitry V. Levin (2021-04-26).
2864:Dmitry V. Levin (2021-07-18).
2849:Dmitry V. Levin (2021-09-02).
2834:Dmitry V. Levin (2021-12-01).
2819:Dmitry V. Levin (2022-01-10).
2804:Dmitry V. Levin (2022-03-27).
2789:Dmitry V. Levin (2022-06-18).
2774:Dmitry V. Levin (2022-08-12).
2759:Dmitry V. Levin (2022-10-29).
2744:Dmitry V. Levin (2022-12-12).
2729:Dmitry V. Levin (2023-02-26).
2484:
2469:
2446:
2431:Dmitry V. Levin (2018-12-15).
2424:
2409:Dmitry V. Levin (2018-04-01).
2402:
2381:
2323:
2314:
382:file contained the following:
1:
3616:Free software programmed in C
2353:
3563:OS Reviews article on strace
2509:. manned.org. June 21, 1994.
1979:option; since strace 5.12).
7:
3389:Rick Sladkey (1994-07-09).
2284:Computer programming portal
2255:
2033:
1968:option; since strace 5.9).
1904:option): modifying return (
10:
3637:
1957:option; since strace 5.2).
731:V4L2_BUF_TYPE_META_CAPTURE
652:Added support for the new
618:Added support for the new
369:
1808:
1378:syscall group support to
1299:on Linux since long time
735:V4L2_BUF_TYPE_META_OUTPUT
446:feature was implemented.
296:
284:
272:
262:
142:
130:
120:
89:
85:
57:
53:
43:
33:
24:
3475:xtrace.alioth.debian.org
3425:Waterland, Amos (2007).
2307:
2044:
568:Added support for a new
1901:tampering specification
1822:option): by name, like
1291:flag is deprecated, as
570:set_mempolicy_home_node
3606:Unix programming tools
3525:intellectualheaven.com
3446:Burton, Ariel (1998).
3316:"strace 4.10 released"
3301:"strace 4.11 released"
3286:"strace 4.12 released"
3271:"strace 4.13 released"
3256:"strace 4.14 released"
3241:"strace 4.15 released"
3226:"strace 4.16 released"
3211:"strace 4.17 released"
3196:"strace 4.18 released"
3181:"strace 4.19 released"
3166:"strace 4.20 released"
3151:"strace 4.21 released"
3136:"strace 4.22 released"
3121:"strace 4.23 released"
3106:"strace 4.24 released"
3091:"strace 4.25 released"
3076:"strace 4.26 released"
2911:"strace 5.10 released"
2896:"strace 5.11 released"
2881:"strace 5.12 released"
2866:"strace 5.13 released"
2851:"strace 5.14 released"
2836:"strace 5.15 released"
2821:"strace 5.16 released"
2806:"strace 5.17 released"
2791:"strace 5.18 released"
2776:"strace 5.19 released"
2695:"strace 4.15 released"
2608:"strace 4.14 released"
2243:-based utility called
1324:Added support for new
1189:Added support for new
399:
3611:Command-line software
3502:. Developer.apple.com
3376:"strace 4.6 released"
3361:"strace 4.7 released"
3346:"strace 4.8 released"
3331:"strace 4.9 released"
3061:"strace 5.0 released"
3046:"strace 5.1 released"
3031:"strace 5.2 released"
3016:"strace 5.3 released"
3001:"strace 5.4 released"
2986:"strace 5.5 released"
2971:"strace 5.6 released"
2956:"strace 5.7 released"
2941:"strace 5.8 released"
2926:"strace 5.9 released"
2761:"strace 6.0 released"
2746:"strace 6.1 released"
2731:"strace 6.2 released"
2659:"strace 4.9 released"
2623:"strace 5.0 released"
2578:"strace 4.7 released"
2563:"strace 4.6 released"
2527:on September 11, 2007
2297:List of Unix commands
1897:syscall specification
895:--relative-timestamps
891:--absolute-timestamps
760:; added support for
739:VIDIOC_QUERY_EXT_CTRL
506:Enhanced decoding of
489:Enhanced decoding of
384:
72:; 11 days ago
3404:Horky, Jiri (2013).
1540:syscalls on Linux;
587:--secontext=mismatch
3553:strace project page
2369:. 15 September 2024
1966:--pidns-translation
1843:-P /etc/ld.so.cache
1804:or cannot be read.
1213:syscalls on Linux;
691:FS_IOC{,32}_ETFLAGS
70:/ 15 September 2024
21:
2028:system call replay
1987:commands, such as
1836:-e trace=/clock_.*
1799:Usage and features
1536:Added support for
1344:syscalls on Linux
1271:Added support for
793:{msg,msq,sem}id_ds
777:Added support for
719:SIOCSIFHWBROADCAST
677:parameters of the
626:syscalls decoding
327:and instructional
35:Original author(s)
19:
2237:Microsoft Windows
1796:
1795:
1577:24 September 2003
1211:rt_tgsigqueueinfo
932:25 September 2019
826:pidfd_send_signal
789:{msg,msq,sem}info
773:24 September 2020
764:syscall decoding
656:syscall decoding
593:syscall on Linux
572:syscall on Linux
533:io_uring_register
323:is a diagnostic,
318:
317:
77:15 September 2024
3628:
3541:
3540:
3538:
3536:
3527:. Archived from
3517:
3511:
3510:
3508:
3507:
3496:
3490:
3489:
3487:
3486:
3477:. Archived from
3467:
3461:
3460:
3458:
3457:
3452:
3443:
3437:
3436:
3434:
3433:
3422:
3416:
3415:
3413:
3412:
3401:
3395:
3394:
3386:
3380:
3379:
3371:
3365:
3364:
3356:
3350:
3349:
3341:
3335:
3334:
3326:
3320:
3319:
3311:
3305:
3304:
3296:
3290:
3289:
3281:
3275:
3274:
3266:
3260:
3259:
3251:
3245:
3244:
3236:
3230:
3229:
3221:
3215:
3214:
3206:
3200:
3199:
3191:
3185:
3184:
3176:
3170:
3169:
3161:
3155:
3154:
3146:
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2581:
2573:
2567:
2566:
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2552:
2551:
2543:
2537:
2536:
2534:
2532:
2523:. Archived from
2517:
2511:
2510:
2503:
2497:
2496:
2488:
2482:
2481:
2473:
2467:
2466:
2463:comp.sources.sun
2450:
2444:
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2422:
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2047:user@server:~$
2041:
1978:
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1919:
1915:
1911:
1907:
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1824:clone,fork,vfork
1821:
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1703:
1691:
1680:
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1651:
1645:
1644:26 November 1999
1632:
1619:
1607:
1595:
1584:
1578:
1566:
1565:13 November 2003
1554:
1543:
1539:
1533:
1522:
1518:
1513:
1501:
1488:
1476:
1466:ioctls on Linux
1465:
1461:
1457:
1453:
1449:
1445:
1439:
1427:
1415:
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1391:
1381:
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1163:
1153:
1143:
1133:
1123:
1122:21 December 2015
1113:
1103:
1093:
1083:
1082:14 December 2016
1073:
1072:14 February 2017
1063:
1053:
1043:
1042:5 September 2017
1033:
1032:13 November 2017
1023:
1022:13 February 2018
1013:
1003:
993:
983:
973:
972:26 December 2018
963:
953:
943:
933:
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922:28 November 2019
911:
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805:
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790:
785:
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763:
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750:14 December 2020
740:
736:
732:
728:
724:
720:
716:
712:
708:
704:
700:
696:
692:
688:
687:FS_IOC_FSETXATTR
684:
680:
676:
672:
666:
665:17 February 2021
655:
649:
636:
625:
621:
615:
614:2 September 2021
603:
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582:
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485:12 December 2022
473:
472:26 February 2023
463:Notable changes
454:
453:
396:
392:
388:
343:, which include
314:
313:
306:
303:
193:Imagination META
132:Operating system
113:
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105:
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101:
80:
78:
73:
69:
29:
22:
18:
3636:
3635:
3631:
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3626:
3625:
3596:
3595:
3582:"Modern strace"
3572:Michael Kerrisk
3549:
3544:
3534:
3532:
3531:on 5 March 2016
3519:
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2324:
2319:
2315:
2310:
2282:
2275:
2268:
2263:
2261:
2258:
2247:, developed by
2245:Process Monitor
2193:
2183:
2158:
2146:
2117:X Window System
2115:that can trace
2097:instrumentation
2093:
2081:
2080:
2077:
2074:
2071:
2068:
2065:
2062:
2059:
2056:
2053:
2050:
2046:
2039:
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1976:
1965:
1954:
1947:
1940:
1936:
1929:
1925:
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1909:
1905:
1894:
1887:
1883:
1876:
1872:
1868:
1864:
1860:
1853:
1849:
1845:, for example).
1842:
1835:
1831:
1827:
1823:
1819:
1801:
1789:
1785:
1781:
1777:
1773:
1769:
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1753:
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1728:
1724:
1720:
1678:
1649:
1631:21 January 2000
1582:
1541:
1537:
1520:
1516:
1463:
1459:
1456:fadvise64{,_64}
1455:
1451:
1447:
1443:
1438:19 October 2004
1426:4 February 2004
1379:
1375:
1358:
1353:16 January 2007
1341:
1337:
1333:
1329:
1325:
1320:16 January 2007
1296:
1292:
1288:
1272:
1255:
1251:
1247:
1243:
1239:
1235:
1231:
1226:21 October 2009
1214:
1210:
1206:
1202:
1198:
1195:perf_event_open
1194:
1190:
982:30 October 2018
910:6 February 2020
899:--syscall-times
898:
894:
890:
886:
882:
878:
874:
848:ioctl decoding
845:
841:
837:
833:
830:rt_sigqueueinfo
829:
825:
821:
817:
813:
809:
792:
788:
783:
778:
762:process_madvise
761:
756:
741:ioctl commands
738:
734:
730:
726:
722:
718:
714:
710:
706:
702:
698:
694:
690:
686:
682:
678:
674:
670:
653:
623:
619:
602:1 December 2021
590:
586:
581:10 January 2022
569:
540:
536:
532:
528:
514:ioctl commands
511:
507:
502:29 October 2022
490:
452:
450:Version history
444:fault injection
394:
390:
386:
372:
308:
300:
116:
98:
81:
76:
74:
71:
39:Paul Kranenburg
17:
12:
11:
5:
3634:
3624:
3623:
3618:
3613:
3608:
3594:
3593:
3579:
3565:
3560:
3555:
3548:
3547:External links
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2538:
2512:
2498:
2483:
2468:
2445:
2435:(Mailing list)
2423:
2413:(Mailing list)
2401:
2380:
2367:"Release 6.11"
2357:
2355:
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2348:
2335:
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2187:
2177:
2173:has truss and
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1594:19 August 2001
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1475:31 August 2004
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1362:
1361:specification
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1267:28 August 2008
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1142:15 August 2014
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1092:4 October 2016
1089:
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992:14 August 2018
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866:
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849:
846:LOOP_CONFIGURE
806:
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747:
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523:12 August 2022
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225:z/Architecture
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127:
122:
118:
117:
115:
114:
95:
93:
87:
86:
83:
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63:
61:
59:Stable release
55:
54:
51:
50:
47:
41:
40:
37:
31:
30:
15:
9:
6:
4:
3:
2:
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3561:
3559:
3556:
3554:
3551:
3550:
3530:
3526:
3522:
3516:
3501:
3495:
3481:on 2014-08-05
3480:
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3392:
3385:
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2391:. Openhub.net
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2232:
2228:
2225:
2222:
2218:
2215:
2212:
2208:
2205:
2203:
2199:
2192:provides the
2191:
2188:
2182:provides the
2181:
2178:
2176:
2172:
2168:
2165:
2161:
2156:
2153:
2149:
2145:provides the
2144:
2141:
2138:
2134:
2130:
2126:
2122:
2118:
2114:
2110:
2106:
2103:
2102:
2101:
2098:
2091:Similar tools
2088:
2086:
2043:
2031:
2029:
2025:
2020:
2018:
2014:
2010:
2006:
2002:
1998:
1994:
1990:
1986:
1974:
1970:
1963:
1962:PID namespace
1959:
1952:
1945:
1934:
1918::delay_enter=
1902:
1898:
1892:
1881:
1858:
1847:
1840:
1817:
1816:
1815:
1812:
1805:
1784:qualifiers),
1743:
1738:
1735:
1734:
1718:
1713:
1710:
1709:
1705:
1702:27 April 1999
1700:
1697:
1696:
1693:
1688:
1685:
1684:
1677:Fixed 64-bit
1676:
1671:
1668:
1667:
1664:
1659:
1656:
1655:
1652:script added
1647:
1642:
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1634:
1629:
1626:
1625:
1621:
1616:
1613:
1612:
1609:
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1600:
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1592:
1589:
1588:
1585:option added
1580:
1575:
1572:
1571:
1568:
1563:
1560:
1559:
1556:
1551:
1548:
1547:
1535:
1532:16 April 2004
1530:
1527:
1526:
1515:
1510:
1507:
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1498:
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1441:
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1417:
1414:13 March 2005
1412:
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1405:
1402:22 March 2005
1400:
1397:
1396:
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1373:
1370:3 August 2005
1368:
1365:
1364:
1356:
1351:
1348:
1347:
1323:
1318:
1315:
1314:
1311:
1308:3 August 2007
1306:
1303:
1302:
1287:
1282:
1279:
1278:
1270:
1265:
1262:
1261:
1248:inotify_init1
1240:epoll_create1
1229:
1224:
1221:
1220:
1191:inotify_init1
1188:
1185:13 April 2010
1183:
1180:
1179:
1175:15 March 2011
1173:
1170:
1169:
1165:
1160:
1157:
1156:
1150:
1147:
1146:
1140:
1137:
1136:
1130:
1127:
1126:
1120:
1117:
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1107:
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1100:
1097:
1096:
1090:
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1086:
1080:
1077:
1076:
1070:
1067:
1066:
1060:
1057:
1056:
1050:
1047:
1046:
1040:
1037:
1036:
1030:
1027:
1026:
1020:
1017:
1016:
1010:
1007:
1006:
1000:
997:
996:
990:
987:
986:
980:
977:
976:
970:
967:
966:
962:19 March 2019
960:
957:
956:
950:
947:
946:
940:
937:
936:
930:
927:
926:
920:
917:
916:
913:
908:
905:
904:
883:-e decode-fds
872:
867:
864:
863:
860:
855:
852:
851:
807:
804:6 August 2020
802:
799:
798:
786:
776:
771:
768:
767:
759:
753:
748:
745:
744:
668:
663:
660:
659:
654:mount_setattr
651:
648:26 April 2021
646:
643:
642:
638:
633:
630:
629:
617:
612:
609:
608:
605:
600:
597:
596:
584:
579:
576:
575:
567:
564:26 March 2022
562:
559:
558:
555:
550:
547:
546:
526:
521:
518:
517:
505:
500:
497:
496:
488:
483:
480:
479:
475:
470:
467:
466:
462:
460:Release date
459:
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436:
431:
428:
423:
419:
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412:
408:
404:
398:
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206:
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198:
194:
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186:
182:
178:
174:
170:
166:
162:
161:ARM EABI/OABI
158:
154:
150:
147:
145:
141:
138:
135:
133:
129:
126:
123:
119:
112:
107:
97:
96:
94:
92:
88:
84:
68:
62:
60:
56:
52:
48:
46:
42:
38:
36:
32:
28:
23:
3576:NDC TechTown
3533:. Retrieved
3529:the original
3524:
3515:
3504:. Retrieved
3494:
3483:. Retrieved
3479:the original
3474:
3465:
3454:. Retrieved
3441:
3430:. Retrieved
3420:
3409:. Retrieved
3399:
3384:
3369:
3354:
3339:
3324:
3309:
3294:
3279:
3264:
3249:
3234:
3219:
3204:
3189:
3174:
3159:
3144:
3129:
3114:
3099:
3084:
3069:
3054:
3039:
3024:
3009:
2994:
2979:
2964:
2949:
2934:
2919:
2904:
2889:
2874:
2859:
2844:
2829:
2814:
2799:
2784:
2769:
2754:
2739:
2724:
2713:
2703:
2688:
2677:
2667:
2652:
2641:
2631:
2616:
2601:
2586:
2571:
2556:
2541:
2529:. Retrieved
2525:the original
2515:
2501:
2486:
2471:
2448:
2437:. Retrieved
2426:
2415:. Retrieved
2404:
2393:. Retrieved
2383:
2373:26 September
2371:. Retrieved
2361:
2338:
2325:
2316:
2249:Sysinternals
2135:that extend
2112:
2094:
2082:
2037:
2027:
2024:GNU Debugger
2021:
1982:
1926::poke_enter=
1922::delay_exit=
1900:
1896:
1813:
1806:
1802:
1661:25 July 1999
1650:strace-graph
1618:1 April 2001
1606:7 April 2001
1553:1 March 2004
1523:is supplied
1500:27 June 2004
1487:12 July 2004
1448:et_mempolicy
1284:21 July 2008
1273:subpage_prot
1132:6 March 2015
1102:26 July 2016
1012:5 April 2018
1002:14 June 2018
942:12 July 2019
887:--decode-fds
869:7 April 2020
832:were added,
715:SIOCSIFENCAP
707:SIOCGIFENCAP
703:SIOCDELMULTI
699:SIOCADDMULTI
683:epoll_pwait2
635:18 July 2021
620:memfd_secret
552:18 June 2022
510:syscall and
440:
432:
415:
400:
385:
373:
357:
345:system calls
341:Linux kernel
331:utility for
320:
319:
263:Available in
189:Motorola 68k
49:Dmitry Levin
45:Developer(s)
3558:Manual page
2531:January 14,
2157:offers the
2133:KernelShark
2019:protocols.
1977:--secontext
1930::poke_exit=
1740:9 July 1994
1715:1 June 1996
1690:9 June 1999
1679:struct stat
1673:9 July 1999
1512:3 June 2004
1390:8 June 2005
1152:3 June 2013
1112:31 May 2016
1062:24 May 2017
1052:5 July 2017
952:22 May 2019
857:1 June 2020
779:close_range
727:UBI_IOCSPEB
723:UBI_IOCRPEB
711:SIOCOUTQNSD
671:poke_enter=
624:quotactl_fd
591:futex_waitv
420:; ports to
235:32/64 bit,
231:32/64 bit,
215:32/64 bit,
3600:Categories
3590:DevConf.cz
3535:29 January
3506:2014-07-23
3485:2014-08-12
3456:2013-09-16
3432:2013-09-16
3411:2013-09-16
2439:2021-09-02
2417:2021-09-02
2395:2021-11-23
2354:References
2213:and DTrace
2119:programs,
1955:-e status=
1895:-e inject=
1875:options;
1462:syscalls,
1162:2 May 2012
842:faccessat2
834:arch_prctl
675:poke_exit=
543:structure
529:arch_prctl
291:LGPL v2.1+
221:System/390
197:MicroBlaze
173:HP PA-RISC
121:Written in
91:Repository
64:6.11
3621:Debuggers
2459:Newsgroup
2331:GPL v2.0+
2229:provides
2223:and kdump
2209:provides
2196:command,
2129:trace-cmd
2121:SystemTap
2049:stracels
2042:command:
1971:Decoding
1939:option;
1890:options).
1856:options).
1854:-e write=
1820:-e trace=
1380:-e trace=
1256:signalfd4
541:siginfo_t
395:strace(1)
387:strace(1)
360:Unix-like
337:processes
329:userspace
325:debugging
279:Debugging
213:Power ISA
185:LoongArch
171:, C-SKY,
153:DEC Alpha
2507:"strace"
2256:See also
2180:UnixWare
2034:Examples
1950:option).
1914::signal=
1906::retval=
1850:-e read=
1792:options
1334:pselect6
1330:inotify*
1244:eventfd2
1207:recvmmsg
875:-e quiet
810:%process
679:--inject
457:Version
391:trace(1)
339:and the
209:OpenRISC
169:Blackfin
144:Platform
2461::
2217:OpenBSD
2190:FreeBSD
2186:command
2171:Illumos
2167:Solaris
2163:command
2151:command
2017:netlink
1989:BTRFS_*
1973:SELinux
1910::error=
1766:verbose
1729:process
1460:epoll_*
1442:Decode
1342:unshare
1295:traces
1232:accept4
1203:pwritev
879:--quiet
838:unshare
422:FreeBSD
411:Solaris
370:History
297:Website
286:License
267:English
253:x32 ABI
245:TILE-Gx
241:TILEPro
205:Nios II
149:AArch64
106:/strace
104:/strace
75: (
3586:source
2715:GitHub
2679:GitHub
2643:GitHub
2231:ktrace
2221:ktrace
2211:ktrace
2207:NetBSD
2202:DTrace
2198:ktrace
2175:DTrace
2137:ftrace
2127:, and
2113:xtrace
2109:ltrace
2040:strace
2001:NSFS_*
1993:V4L2_*
1871:, and
1780:, and
1774:signal
1762:abbrev
1686:3.99.1
1458:, and
1452:waitid
1410:4.5.10
1398:4.5.11
1386:4.5.12
1366:4.5.13
1349:4.5.14
1316:4.5.15
1304:4.5.16
1280:4.5.17
1263:4.5.18
1222:4.5.19
1199:preadv
1181:4.5.20
897:, and
828:, and
822:tgkill
737:, and
695:GPIO_*
535:, and
380:README
353:ptrace
349:signal
321:strace
307:
302:strace
257:Xtensa
249:x86-64
229:SuperH
217:RISC-V
100:github
20:strace
3451:(PDF)
2308:Notes
2227:macOS
2219:uses
2194:truss
2184:truss
2155:HP-UX
2148:truss
2105:Linux
2013:KVM_*
2009:EVIO*
1985:ioctl
1832:%file
1782:write
1758:trace
1657:4.0.1
1602:4.3.1
1561:4.5.1
1549:4.5.2
1528:4.5.3
1508:4.5.4
1496:4.5.5
1483:4.5.6
1471:4.5.7
1464:RTC_*
1444:mbind
1434:4.5.8
1422:4.5.9
1338:ppoll
1297:vfork
1252:pipe2
818:tkill
784:TEE_*
757:libdw
537:prctl
512:PTP_*
508:setns
491:statx
435:Linux
403:Linux
376:SunOS
364:truss
358:Some
333:Linux
233:SPARC
181:IA-64
177:IA-32
165:AVR32
137:Linux
3592:2019
3578:2018
3537:2015
2533:2015
2375:2024
2302:lsof
2200:and
2160:Tusc
2131:and
2125:perf
2107:has
2005:MEM*
1997:DM_*
1928:and
1920:and
1886:and
1852:and
1828:%ipc
1778:read
1725:file
1698:3.99
1538:mq_*
1376:desc
1374:Add
1340:and
1236:dup3
1128:4.10
1118:4.11
1108:4.12
1098:4.13
1088:4.14
1078:4.15
1068:4.16
1058:4.17
1048:4.18
1038:4.19
1028:4.20
1018:4.21
1008:4.22
998:4.23
988:4.24
978:4.25
968:4.26
836:and
814:kill
791:and
746:5.10
673:and
661:5.11
644:5.12
631:5.13
622:and
610:5.14
598:5.15
577:5.16
560:5.17
548:5.18
519:5.19
409:and
407:SVR4
274:Type
237:TILE
201:MIPS
102:.com
3574:at
2292:gdb
2241:GUI
2143:AIX
2051:...
1941:-yy
1830:or
1770:raw
1736:3.0
1721:-o!
1711:3.1
1669:4.0
1640:4.1
1627:4.2
1614:4.3
1590:4.4
1573:4.5
1326:*at
1171:4.6
1158:4.7
1148:4.8
1138:4.9
958:5.0
948:5.1
938:5.2
928:5.3
918:5.4
906:5.5
865:5.6
853:5.7
800:5.8
769:5.9
498:6.0
481:6.1
468:6.2
427:git
418:CVS
304:.io
157:ARC
3602::
3523:.
3473:.
2712:.
2676:.
2640:.
2457:.
2344:-z
2169:/
2123:,
2085:ls
2030:.
2011:,
2007:,
2003:,
1999:,
1995:,
1991:,
1948:-k
1937:-y
1888:-r
1884:-t
1877:-U
1873:-w
1869:-C
1867:,
1865:-c
1863:,
1861:-T
1809:-p
1790:-i
1788:,
1786:-c
1776:,
1772:,
1768:,
1764:,
1760:,
1754:-e
1752:,
1750:-q
1748:,
1746:-x
1727:,
1583:-E
1542:-p
1521:-f
1517:-p
1454:,
1450:,
1446:,
1359:-e
1336:,
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1328:,
1293:-f
1289:-F
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1238:,
1234:,
1215:-C
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.