x11r4 man page for setuid

Query: setuid

OS: x11r4

Section: 1

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

SETUID(1)                                                     General Commands Manual                                                    SETUID(1)

NAME
setuid - run a command with a different uid.
SYNOPSIS
setuid username|uid command [ args ]
DESCRIPTION
Setuid changes user id, then executes the specified command. Unlike some versions of su(1), this program doesn't ever ask for a password when executed with effective uid=root. This program doesn't change the environment; it only changes the uid and then uses execvp() to find the command in the path, and execute it. (If the command is a script, execvp() passes the command name to /bin/sh for processing.) For example, setuid some_user $SHELL can be used to start a shell running as another user. Setuid is useful inside scripts that are being run by a setuid-root user -- such as a script invoked with super, so that the script can execute some commands using the uid of the original user, instead of root. This allows unsafe commands (such as editors and pagers) to be used in a non-root mode inside a super script. For example, an operator with permission to modify a certain protected_file could use a super command that simply does: cp protected_file temp_file setuid $ORIG_USER ${EDITOR:-/bin/vi} temp_file cp temp_file protected_file (Note: don't use this example directly. If the temp_file can somehow be replaced by another user, as might be the case if it's kept in a temporary directory, there will be a race condition in the time between editing the temporary file and copying it back to the protected file.)
AUTHOR
Will Deich local SETUID(1)
Related Man Pages
setuid(2) - linux
setuid32(2) - centos
setuid32(2) - suse
setuid(1) - x11r4
setuid(1) - xfree86
Similar Topics in the Unix Linux Community
The "read" command
restrict the user not to key in more than 50 chars
to parse a directory and its subdirectories and find owner name of files
Running "who am i" on sol 8
Trying to create a script to run as root, permission denied