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A set of tools that use the proc filesystem.

Home Page: http://psmisc.sourceforge.net/

License: GNU General Public License v2.0

C 98.74% Shell 1.26%

psmisc's Introduction

psmisc
======

This package contains five little utilities that use the proc FS:

  fuser     identifies processes using files or sockets (similar to Sun's
	    or SGI's fuser)
  killall   kills processes by name, e.g. killall -HUP named
  pidof	    like killall, buts lists PIDs instead of killing processes
  pstree    shows the currently running processes as a tree
  peekfd    shows the data travelling over a file descriptor

They should work with most recent kernels. Man pages are included.

- Werner Almesberger <[email protected]>

src/loop.h was stolen from util-linux package which in turn stole it from
the Linux kernel.

fuser on network fs
-------------------
On network filesystems, fuser can hang because its trying to stat files
that may go away.  If you use the --with-timeout-stat option during
the configure step then fuser will fork a process to run stat. This means
fuser doesn't hang, but it is much slower.

Translations
------------
My thanks for the various translators who have cheerfully given me the po
files to make psmisc speak different languages.  If your language is not
supported then let me know, all it takes is translating one file in 
a certain manner.

Icons
-----
The pstree icons were drawn by Tatlin at Coresis who has given permission
for them to be used for psmisc.

Copyright Change
----------------

The license has changed to GPL for version 20 onwards with permission
of the original authors.  People who want to use these programs under
the previous license will have to look at psmisc 19 or below.

psmisc's People

Contributors

Stargazers

Watchers

Forkers

kevwargo zhouronghua wangnianwu ghjk94522 murtraja leonkasovan tumb1eweed

psmisc's Issues

killall and the name of valgrind

Hello!

Valgrind seems to rename itself and do a few tricks which confuses killall:

alext@dark:~/installs/psmisc$ which valgrind
/usr/bin/valgrind
alext@dark:~/installs/psmisc$ file /usr/bin/valgrind
/usr/bin/valgrind: POSIX shell script, ASCII text executable
alext@dark:~/installs/psmisc$ tail /usr/bin/valgrind
# Force C++ STL to use malloc and to free memory by disabling 
# memory caching.
# For gcc < 3.4 versions
export GLIBCPP_FORCE_NEW=1

# For gcc >= 3.4 versions
export GLIBCXX_FORCE_NEW=1

# Use 'exec' to avoid having another shell process hanging around.
exec $0.bin "$@"
alext@dark:~/installs/psmisc$ which valgrind.bin
/usr/bin/valgrind.bin
alext@dark:~/installs/psmisc$ file /usr/bin/valgrind.bin
/usr/bin/valgrind.bin: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=83d519cb14acf074c670818c6cb48e8430620ea3, stripped
alext@dark:~/installs/psmisc$ valgrind sleep 100000 &
[1] 29264
alext@dark:~/installs/psmisc$ ==29264== Memcheck, a memory error detector
==29264== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==29264== Using Valgrind-3.10.1 and LibVEX; rerun with -h for copyright info
==29264== Command: sleep 100000
==29264== 

alext@dark:~/installs/psmisc$ 
alext@dark:~/installs/psmisc$ ls -l /proc/29264/exe 
lrwxrwxrwx 1 alext alext 0 Aug 13 10:48 /proc/29264/exe -> /usr/lib/valgrind/memcheck-amd64-linux
alext@dark:~/installs/psmisc$ cat /proc/29264/comm
memcheck-amd64-
alext@dark:~/installs/psmisc$ xxd /proc/29264/cmdline 
0000000: 2f75 7372 2f62 696e 2f76 616c 6772 696e  /usr/bin/valgrin
0000010: 642e 6269 6e00 736c 6565 7000 3130 3030  d.bin.sleep.1000
0000020: 3030 00                                  00.
alext@dark:~/installs/psmisc$ ls -l /usr/lib/valgrind/memcheck-amd64-linux
-rwxr-xr-x 1 root root 4087408 Mar 26 22:42 /usr/lib/valgrind/memcheck-amd64-linux
alext@dark:~/installs/psmisc$ file /usr/lib/valgrind/memcheck-amd64-linux
/usr/lib/valgrind/memcheck-amd64-linux: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, BuildID[sha1]=f8a43a1f62e68f711332b3f5cd8206650938c8a3, stripped
alext@dark:~/installs/psmisc$ ps aux | grep valgrind
alext    29264  0.2  0.4 105540 36708 pts/22   S    10:48   0:00 /usr/bin/valgrind.bin sleep 100000
alext    29316  0.0  0.0  10944   936 pts/22   S+   10:51   0:00 grep --color=auto valgrind
alext@dark:~/installs/psmisc$ pidof valgrind
alext@dark:~/installs/psmisc$ pidof valgrind.bin
29264
alext@dark:~/installs/psmisc$ pidof memcheck-amd64-linux
alext@dark:~/installs/psmisc$ killall valgrind
valgrind: no process found
alext@dark:~/installs/psmisc$ killall valgrind.bin
valgrind.bin: no process found
alext@dark:~/installs/psmisc$ killall memcheck-amd64-linux
alext@dark:~/installs/psmisc$ ==29264== 
==29264== HEAP SUMMARY:
==29264==     in use at exit: 0 bytes in 0 blocks
==29264==   total heap usage: 29 allocs, 29 frees, 3,928 bytes allocated
==29264== 
==29264== All heap blocks were freed -- no leaks are possible
==29264== 
==29264== For counts of detected and suppressed errors, rerun with: -v
==29264== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)

[1]+  Terminated              valgrind sleep 100000
alext@dark:~/installs/psmisc$

I'm not exactly sure what valgrind is doing, but it sure has many names :) The thing which I would like to work though, is if you try "killall X", where X is what ps prints. Since ps prints "/usr/bin/valgrind.bin", I would like to be able to do "killall /usr/bin/valgrind.bin" or "killall valgrind.bin". This doesn't work in this case tough.

A quick look at the source code seems to indicate that the reason is that killall loads the name from /proc/N/comm (using "load_process_name_and_age"), and only falls back to /proc/N/cmdline (using "load_proc_cmdline") if the command name is longer than COMM_LEN.

My feature request is to consider matching both names, as they may differ. In this case I don't even see the need for looking at comm.

Why does --show-parents return a tree although the pid does not exist?

If I execute pstree with a pid, that does not exist, it returns a complete tree. This happens only with the --show-parents option and for me it is an unexpected behavior.

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