/usr/share/fish/man/man1/bg.1 is in fish-common 2.4.0-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | .TH "bg" 1 "Sun Dec 11 2016" "Version 2.4.0" "fish" \" -*- nroff -*-
.ad l
.nh
.SH NAME
\fBbg\fP -- send jobs to background
.PP
.SS "Synopsis"
.PP
.nf
\fBbg\fP [PID\&.\&.\&.]
.fi
.PP
.SS "Description"
\fCbg\fP sends \fCjobs\fP to the background, resuming them if they are stopped\&. A background job is executed simultaneously with fish, and does not have access to the keyboard\&. If no job is specified, the last job to be used is put in the background\&. If PID is specified, the jobs with the specified process group IDs are put in the background\&.
.PP
The PID of the desired process is usually found by using \fCprocess expansion\fP\&.
.SS "Example"
\fCbg %1\fP will put the job with job ID 1 in the background\&.
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