9(1)

NAME
9, 9.rc, u, u.rc - run Plan 9 or Unix commands

SYNOPSIS
9 cmd [ args ... ]

. 9 (from sh(1))

9.rc cmd [ args ... ]

. 9.rc (from rc(1))

u cmd [ args ... ]

. u (from sh(1))

u.rc cmd [ args ... ]

. u.rc (from rc(1))

DESCRIPTION
Because Plan 9 supplies commands with the same name as but different behavior than many basic Unix system commands (e.g., grep, sed, mkdir, rm), it is not recommended to run with the Plan 9 bin directory ahead of the system directories.

9 is a shell script that sets up a Plan 9 environment and runs cmd . It sets $PLAN9 if necessary and adds $PLAN9/bin to the beginning of $PATH before running cmd.

If run with no arguments, 9 does not do anything, so it can be invoked from sh-style shells using . 9 in order to make the current shell start running in the Plan 9 environment.

9.rc is the same as 9 but written for use by the shell rc(1).

U and u.rc are the inverse of 9 and 9.rc: they move $PLAN9/bin to the end of the path.

EXAMPLES
Search for greek in the password file:

        $ 9 grep '[α-ζ]' /etc/passwd

Start an rc(1) with the Plan 9 commands in the path before the system commands, and then run the Unix ls:

        $ 9 rc
        % u ls

SOURCE
/bin/9
/bin/9.rc
/bin/u
/bin/u.rc

SEE ALSO
intro(1)