stopafter

        stopafter 30 command arg arg arg...

• sudo works similarly:

        sudo command arg arg arg...

• It runs as root, then prompts for a password, and execs the command if the password is correct

• Similarly nice:

        nice -10 command arg arg arg...

• It sets the nice value and execs the command

• Whenever a process tries to access a file, if the path begins with /, the lookup starts at the process's root directory

  • This is almost always /

  • But a pointer to the root inode is stored in each process structure

• So chroot:

        chroot dir command arg arg arg...

• chroot sets the root directory inode and execs the command

• Subsequent file lookups are interpreted relative to the new root

Next

Copyright © 2003 M. J. Dominus