First form

Lists the active jobs.

jobs [-lnprs] [ jobspec ... ]

where:

• -l List process IDs in addition to the normal information.
• -p List only the process ID of the job’s process group leader.
• -n Display information only about jobs that have changed status since the user was last notified of their status.
• -r Restrict output to running jobs.
• -s Restrict output to stopped jobs.

If jobspec is given, output is restricted to information about that job. The return status is 0 unless an invalid option is encountered or an invalid jobspec is supplied.

Second form

jobs -x command [ args ... ]

where:

• -x: jobs replaces any jobspec found in command or args with the corresponding process group ID, and executes command passing it args, returning its exit status.