Bash Sleep Command Bash Sleep command is used to insert a delay or pause the execution for a specified period of time. It returns the exit status of waited-for command. i need the main script to wait until those commands are finished , and the problem is that the main script is not waiting . The call to wait will pause the script until all backgrounded tasks have finished executing. Syntax wait [pid] [jobid]Description. Here’s how it works. - Takes about 1.2 seconds when I try it. Shell script runs fine in Solaris, in Linux hangs at wait command HI, I have a strange problem. Linux wait command help, examples, and information. Alternatively (just "for your information"), depending on whether you want command 1 and 2 to run concurrently or not (equivalently for command 3 and 4): Python doesn't start up instantly - you need to account for that. But then we need to factor in how long python startup actually takes. here is the core of the script CFG_FILE=tab25.cfg sort -t "!" Some commands can be used without options or specifying files. This article explains how to use the Linux sleep command to pause a bash script, among other things. Wait Command; Sleep Command; Create and Execute First BASH Program: You can run bash script from the terminal or by executing any bash file. For example, you can use it to pause the script before retrying a command … where n is the pid or job ID of a currently executing background process (job). Quick note: Anything encased in [ ] means that it’s optional. One idea was getting pid of gnome terminal and wait for it do close and then run the 2nd command . However, as part of a script, it can be used in many ways. Following is the syntax of bash sleep : SUFFIX is optional and can be : s – seconds m – minutes h – hours d – days When no SUFFIX is provided, by default, the NUMBER is considered to be seconds. ls — List directory contents. Bash wait command wait command stop script execution until all jobs running in background have terminated, or until the job number or process id specified as an option terminates. remark: on linux or OS X sleep 0.XXX works fine , but on solaris sleep 0.1 or sleep 0.01 - illegal syntax sign so that it loops until the command succceeds. Make it python -c "import time; time.sleep(0.8)" instead. sleep is a very popular command and we can start sleep from 1 second: # wait one second please sleep 1 but what the alternative if I need to wait only 0.1 second or between 0.1 to 1 second ? You need to use the sleep command to add delay for a specified amount of time. Take your Bash skills to the next level with an interactive course Ian Miell, author of Learn Bash the Hard Way. Master the Bash Shell. The output of the command will be ‘Hello World’. Top 25 Bash Commands. Only this way is possible . A shell script that runs fine on solaris. 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