Command line and full screen utilities for browsing procfs, a "pseudo" file system dynamically generated by Linux to provide information about the status of entries in its process table.
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Jim Warner bb19ac0926 top: at program startup, avoid a little extra overhead
There was a time when the PROCPS_PIDS_noop represented
the highest valued enumerator. Therefore if one wished
to prime an array consisting of pids_result structures
with this specific item a loop would have been needed.

Now that this enum is the first one, with the value of
zero, we can avoid avoid such a loop with just calloc.

But just in case, we'll use an 'if' to guarantee zero.

[ and the nice thing is, since the value is known at ]
[ compile time, that 'if' test plus subordinate loop ]
[ can be discarded by the compiler as long as it's 0 ]

Reference(s):
. <pids> introduced (PIDS_noop > 0)
commit 7e6a371d8a
. top employs PIDS_noop at 'new' time
commit f1bd82ff07
. <pids> relocated PIDS_noop (PIDS_noop == 0)
commit e7585992d9

Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-08-19 20:46:39 +10:00
contrib miscellaneous: clean up trailing whitespace once again 2013-04-07 18:05:01 +10:00
doc documentation: Update pids manual pages 2017-01-05 09:44:04 +11:00
Documentation miscellaneous: remove some trailing whitespace buildup 2015-06-20 07:46:23 +10:00
include tests: update template and add pids 2016-04-19 21:33:02 +10:00
lib kill: -l space between name parses correctly 2017-05-22 22:15:59 +10:00
man-po ps: recognize SCHED_DEADLINE 2016-11-21 21:56:37 +11:00
misc build-sys: rename the 'tools' subdirectory to 'misc' 2012-03-02 21:25:38 +11:00
po free: french translation alignment 2016-08-23 20:46:17 +10:00
proc library: correct the #define FALSE_THREADS, <PIDS> api 2017-07-04 20:40:53 +10:00
ps ps: have now added the NUMA node field display support 2017-05-22 21:38:10 +10:00
testsuite kill: -l space between name parses correctly 2017-05-22 22:15:59 +10:00
top top: at program startup, avoid a little extra overhead 2017-08-19 20:46:39 +10:00
.gitignore pgrep: some coverity fixes 2016-04-27 22:50:25 +10:00
.gitlab-ci.yml test: Update gitlab CI YAML to use shared runner 2016-04-20 22:20:55 +10:00
AUTHORS Changed git site to gitlab 2015-05-10 14:57:50 +10:00
autogen.sh Fix a remaining util-linux word in autogen 2012-02-26 08:39:16 +11:00
ChangeLog Changed git site to gitlab 2015-05-10 14:57:50 +10:00
configure.ac top: show fewer decimal places for memory (by default) 2017-03-16 22:08:07 +11:00
COPYING license: update FSF addresses 2012-03-04 08:04:24 +11:00
COPYING.LIB miscellaneous: clean up trailing whitespace once again 2013-04-07 18:05:01 +10:00
create-man-pot.sh docs: with systemd now in library, remember openproc.3 2014-07-18 20:49:57 +02:00
free.1 watch,free: interpet intervals in non-locale way 2016-07-03 16:20:48 +10:00
free.c misc: adapt 3 programs to some enum changes, <meminfo> 2017-06-04 21:36:23 +10:00
INSTALL.md docs: Updated documentation 2015-05-10 17:23:54 +10:00
kill.1 docs: fix manual page warnings 2012-04-16 12:55:53 +02:00
kill.c kill: -l space between name parses correctly 2017-05-22 22:15:59 +10:00
Makefile.am library: set stage for NUMA node field display support 2017-05-22 21:38:10 +10:00
NEWS kill: -l space between name parses correctly 2017-05-22 22:15:59 +10:00
pgrep.1 pkill: Return 0 if successfully killed process 2017-02-04 12:00:24 +11:00
pgrep.c pkill: Return 0 if successfully killed process 2017-02-04 12:00:24 +11:00
pidof.1 pidof: support for omitted %PPID and additional separators 2013-10-14 15:38:33 +02:00
pidof.c related: respond to VAL macro addition of context parm 2016-08-07 21:40:48 +10:00
pkill.1 procps 010114 2002-02-01 22:47:29 +00:00
pmap.1 pmap: Including -p in the man page 2013-11-26 13:45:22 +01:00
pmap.c pmap: fix printing bug associated with the '-x' option 2016-09-11 09:31:05 +10:00
pwdx.1 docs: fix manual page warnings 2012-04-16 12:55:53 +02:00
pwdx.c Handle out of memory conditions. 2015-07-11 21:28:47 +02:00
README.md misc: eliminate accumulated trailing whitespace, again 2016-03-12 14:53:53 +11:00
skill.1 skill: support namespaces 2013-04-18 13:59:44 -04:00
skill.c skill: fixup inconsistencies in result type references 2016-08-11 07:57:55 +10:00
slabtop.1 procps: Add a zero-width break point in slabtop.1 2015-06-01 22:04:40 +10:00
slabtop.c misc: eliminate all those remaining gcc -Wall warnings 2017-05-22 21:38:10 +10:00
snice.1 procps 010114 2002-02-01 22:47:29 +00:00
sysctl.8 docs: Fix typos in slabtop.1, sysctl.8 and uptime.1 2014-09-16 19:35:28 +02:00
sysctl.c sysctl: Print lines longer than 1024 chars 2017-05-22 22:34:29 +10:00
sysctl.conf docs: remove tcp_default_win_scale from sysctl.conf sample 2012-01-24 22:34:12 +01:00
sysctl.conf.5 misc: remove some newly introduced trailing whitespace 2016-09-26 07:40:45 +10:00
tload.1 docs: fix manual page warnings 2012-04-16 12:55:53 +02:00
tload.c library: cleanup of library includes 2016-04-16 17:03:57 +10:00
translate-man.sh Fixed translate-man.sh for no top ps 2014-05-28 20:12:33 +10:00
uptime.1 docs: Fix typos in slabtop.1, sysctl.8 and uptime.1 2014-09-16 19:35:28 +02:00
uptime.c library: cleanup of library includes 2016-04-16 17:03:57 +10:00
vmstat.8 library: reverting tmpfs subtraction from cached (18-FEB-2014) 2014-04-30 13:59:34 +02:00
vmstat.c misc: adapt 3 programs to some enum changes, <meminfo> 2017-06-04 21:36:23 +10:00
w.1 w: correct program help & man page regarding arguments 2015-09-07 18:11:48 +10:00
w.c related: fix inconsistencies in result type references 2016-08-07 21:40:48 +10:00
watch.1 documentation: Update watch man page 2016-07-03 16:20:58 +10:00
watch.c misc: eliminate all those remaining gcc -Wall warnings 2017-05-22 21:38:10 +10:00

build status procps

procps is a set of command line and full-screen utilities that provide information out of the pseudo-filesystem most commonly located at /proc. This filesystem provides a simple interface to the kernel data structures. The programs of procps generally concentrate on the structures that describe the processess running on the system.

The following programs are found in procps:

  • free - Report the amount of free and used memory in the system
  • kill - Send a signal to a process based on PID
  • pgrep - List processes based on name or other attributes
  • pkill - Send a signal to a process based on name or other attributes
  • pmap - Report memory map of a process
  • ps - Report information of processes
  • pwdx - Report current directory of a process
  • skill - Obsolete version of pgrep/pkill
  • slabtop - Display kernel slab cache information in real time
  • snice - Renice a process
  • sysctl - Read or Write kernel parameters at run-time
  • tload - Graphical representation of system load average
  • top - Dynamic real-time view of running processes
  • uptime - Display how long the system has been running
  • vmstat - Report virtual memory statistics
  • w - Report logged in users and what they are doing
  • watch - Execute a program periodically, showing output fullscreen

Reporting Bugs

There are a few ways of reporting bugs or feature requests:

  1. Your distributions bug reporter. If you are using a distribution your first port of call is their bug tracker. This is because each distribution has their own patches and way of dealing with bugs. Also bug reporting often does not need any subscription to websites.
  2. GitLab Issues - To the left of this page is the issue tracker. You can report bugs here.
  3. Email list - We have an email list (see below) where you can report bugs. The problem with this method is bug reports often get lost and cannot be tracked. This is especially a big problem when its something that will take time to resolve.

If you need to report bugs, there is more details on the Bug Reporting page.

Email List

The email list for the developers and users of procps is found at http://www.freelists.org/archive/procps/ This email list discusses the development of procps and is used by distributions to also forward or discuss bugs.