Shell builtin for viewing information about processes spawned by the current shell. Options other than -l and -p are exclusive to bash.
# To view jobs spawned by the current shell:
jobs
# To list jobs and their process IDs:
jobs -l
# To display information about jobs with changed status:
jobs -n
# To display only process IDs:
jobs -p
# To display running processes:
jobs -r
# To display stopped processes:
jobs -s