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This section describes commands that run other commands in some context different than the current one: a modified environment, as a different user, etc.
chroot: Run a command with a different root directory
Modify the root directory. 22.2
env: Run a command in a modified environment
Modify environment variables. 22.3
nice: Run a command with modified scheduling priority
Modify scheduling priority. 22.4
nohup: Run a command immune to hangups
Immunize to hangups. 22.5
su: Run a command with substitute user and group id
Modify user and group id.