Wait for each specified process to complete and return its termination status.
Syntax wait [n ...] Key n A process ID or a job specification
Each n may be a process ID or a job specification; if a job specification is given, all processes in that job's pipeline are waited for.
If n is not given, all currently active child processes are waited for, and the return status is zero.
If n specifies a non-existent process or job, the return status is 127. Otherwise, the return status is the exit status of the last process or job waited for.
wait is a bash built in command.
$ wait 2585
“If you wait to do everything until you're sure it's right, you'll probably never do much of anything” - Win Borden
ps - Process status
lsof - List open files
Equivalent Windows command: WAITFOR - Wait for or send a signal
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