Reference Manual

NAME

fg - resume interactive execution of a specified thread
SYNOPSIS
fg id
DESCRIPTION
Command fg causes the specified thread to execute in the foreground. Argument id specifies the thread ID. The shell waits until the specified thread terminates.
NOTES
Any shell command can be placed into the background by typing ctrl-b before the command's thread terminates. The fg command reverses that action.
SEE ALSO
kill, ps, shell