The bg built-in resumes a job in the background.
Syntax
-
bg [job…]
Description
The bg built-in sends the SIGCONT signal to the specified job. As a result, the job is resumed in the background (if it has been suspended).
The name of the job is printed when the job is resumed.
The built-in can be used only when job control is enabled.
Operands
- job
-
The job ID of the job to be resumed.
More than one job can be specified at a time. The current job is resumed if none is specified.
The percent sign (
%) at the beginning of a job ID can be omitted if the shell is not in the POSIXly-correct mode.
Exit status
The exit status of the bg built-in is zero unless there is any error.
Notes
The bg built-in is a mandatory built-in.
The POSIX standard provides that the built-in shall have no effect when the job is already running. The bg built-in of yash, however, always sends the SIGCONT signal to the job.