See Bash FAQ 45 for other ways of locking. Trap 'rm -rf /tmp/abc.lock' EXIT # remove the lockdir on exit If you run Debian or Ubuntu (Linux), iperf can be installed by executing. In this case, use a lockfile or a lockdir. I need to make sure only one instance of my script is running. See How can I check to see if my game server is still running. It can start the service automatically and keep track of it, and it can react when it dies. The use of BSD-style options will add process state (statSTAT) to the default display and show the command args (argsCOMMAND). ps -fC PROCESSNAME ps and grep is a dangerous combination - grep tries to match everything on each line (thus the all too common: grep -v grep hack). I want to ensure that service abc is running, and if not, start it That depends on what you need the test for. Commands that are run as the result of a command substitution also ignore these. So how do I reliably test for a certain running process? ID IMAGE COMMAND CREATED STATUS PORTS NAMES SIZE e90b8831a4b8 nginx /bin/bash -c mkdir. There are various options you can apply to ps, grep and pgrep to narrow the search, but you still won't get a reliable test. The docker ps command only shows running containers by default. Any user can easily create and run an executable named abc (or that contains abc somewhere in its name or arguments), causing a false positive for your test. Why?īecause you are not checking if a specific process is running, you are checking if there are any processes running that happens to match abc. NOTE: This should work in AIX terminal.Any solution that uses something like ps aux | grep abc or pgrep abc are flawed. But challenge is, the keyword I am using is not the userid, it's part of the o/p or ps command. From my understanding, ps lists the processes and pipes the list to grep. I should schedule this script for every 1 hour. how to avoid garbage option error on grep command Ask Question Asked 4 years, 3 months ago Modified 4 years, 3 months ago Viewed 8k times 2 i need to check whether a process is running or not on server. same for other too.Ĭould some one help me out with this IF conditional statement added with PS. When I do this manually: kill ps -ef grep 1.sh it works perfectly, killing all processes with this name. for post - "POST Index services is fine". sudo su -c 'kill ps -ef grep 1.sh' But the above command kills only 1 line (first that it finds), and I need to find and kill ALL processes with this name 1.sh. means: look for lines containing processname in a detailed overview/snapshot of all current processes, and display those lines. I need to use a IF condition added with the above ps statements, if the resulting output comes it should send us a status, for HPII - " HPII is running fine without any issues ". Here is a full breakdown of this command: -f - show processes in full format (more detailed than default) processname - the pattern for grep to search for in the output of ps -ef. When we give ps -ef|grep post, it will display a output ending with When we give ps -ef|grep bes_commit, it will display a output ending with bes_commit 1 and bes_commit 2 When we give ps -ef|grep cold, it will display a output ending with. When we give ps -ef|grep HPII, it will display a output ending with. grep -q string file, in backticks (or inside (.), which is preferable ), will be replaced by the output of grep. by using this command line: ps -ef grep -v grep grep mongodb. The next thing which i started here to begin our conversation is - In filenet there are 4 image services HPII COLD POST BES. Multiple Grep Commands In Linux: Tips And Tricks For >Using Multiple Grep. Will keep you posted there if i get any updates. The script was sent to my leads to get their reviews. In my previous post regarding the "Log modification with finding errors" Gabriel has helped me thoroughly to complete the entire script. Am working in a filenet domain where we are using AIX as our terminal to run the jobs and schedule the shell scripts to run.
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