Commands tagged ps (86)
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Pipes the header row of ps to STDERR, then greps for the command on the output of ps, removing the grep entry before that. Show Sample Output
0psgrep() { ps aux | tee >(head -1>&2) | grep -v " grep $@" | grep "$@" -i --color=auto; } -
Llist all the processes in the run queue.
0ps r -A -
If you want to see your top ten cpu using processes from the browser (e.g. you don't want to ssh into your server all the time for checking system load) you can run this command and browse to the machines ip on port 8888. For example 192.168.0.100:8888 Show Sample Output
0while true; do ps aux | sort -rk 3,3 | head -n 11 | cut -c -120 | netcat -l -p 8888 2>&1 >/dev/null; done & -
Given a hosts list, ssh one by one and echo its name only if 'processname' is not running. Show Sample Output
0for i in `cat hosts_list`; do RES=`ssh myusername@${i} "ps -ef " |awk '/[p]rocessname/ {print $2}'`; test "x${RES}" = "x" && echo $i; done -
0PID=$(ps -ef | grep processName | grep -v grep | awk '{print $2'}); kill -9 $PID
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0pkill -f process_name
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Works on Linux, not other UNIXes
0ps -U user -
I like this method because I can make use of pgrep which also has the -f flag that can use regex to match patterns in the full command line string. It will also do ps -fww on all pids returned by pgrep, providing a list of process matching the regex provided. Show Sample Output
0ps -fwwp $(pgrep process_name) -
0watch -n 0.5 ps -C <processname>
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0pgrep -f /usr/sbin/httpd | awk '{print"-p " $1}' | xargs strace
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0ps m
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On debian parent process is running as root, workers as www-data. You can run strace in backgroud, get its PID, curl your webpage, kill strace and read your stats.
0strace -c $(ps -u www-data o pid= | sed 's/^/-p/') -
Use pgrep's flexibility to search for processes, with pretty formatting via ps. All parameters are passed to pgrep. Show Sample Output
0psg() { ps -f fwwp $(pgrep $*) 2>/dev/null } -
0ps -eo pmem,comm | grep chrome | cut -d " " -f 2 | paste -sd+ | bc
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This is a alternate command I like to use instead of TOP or HTOP to see what are the processes which are taking up the most memory on a system. It shows the username, process ID, CPU usage, Memory usage, thread ID, Number of threads associated with parent process, Resident Set Size, Virtual Memory Size, start time of the process, and command arguments. Then it's sorted by memory and showing the top 10 with head. This of course can be changed to suit you needs. I have a small system which is why Firefox is taking so much resources. Show Sample Output
0watch -n .8 'ps -eaLo uname,pid,pcpu,pmem,lwp,nlwp,rss,vsz,start_time,args --sort -pmem| head -10' -
0ps aux | awk '{if ($5 != 0 ) print $2,$5,$6,$11}' | sort -k2rn | head -10 | column -t
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This command is better for just displaying the memory in KiB. Show Sample Output
0ps -eo size,command --sort -size | head -
0watch -n 1 "(ps aux | awk '\$8 ~ /D/ { print \$0 }')"
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Continuously watches postgres, showing the instances using the most RAM at the top. Show Sample Output
0watch -n 1 '{ ps aux | head -n 1; ps aux --sort -rss | grep postgres | grep -v grep; } | cat' -
Hides the process "your_command" from showing with ps, displaying some other random process name already running for a better camouflage. Show Sample Output
0exec -a "$(ps -fea | awk '{print $8}'| sort -R | head -n1)" your_command -sw1 -sw2 -
The classical 'ps aux | grep' can do this with one more parameter, the '-v', with means 'NOT' to grep.
0ps aux | grep -v name_you_want_to_hide -
No need for grep or xargs
0ps auxw | awk '/(apache|httpd)/{print"strace -F -p " $2}' | sh -
-1ps -u<user>
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-1ps -C apache o pid= | sed 's/^/-p /' | xargs strace
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-1ps aux | awk {'sum+=$3;print sum'} | tail -n 1
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