bg command in Linux or Unix is actually a part of shell job control. This command’s primary purpose is to resume suspended jobs in system by running them in background. Technically, this command may be available as both, internal as well as external command. Also, this command can be used to restart a stopped process in background.
Syntax to use bg command in Linux
bg jobID bg jobID1 jobID2…..
jobID can be specified in terms of:
%n: Indicates to job number n
%str: Indicates a job which is started by a command with suffix str
%?str: Indicates the job that is started by a command including str
%% | %+: Indicates to current job.
%-: Indicates to previous job
Options to use with bg command in Linux
–help: Displays help information on screen and exits
Example of bg command
1: To view the help information of bg command
2: To put a job number 3 in background