BSD 4_3_Tahoe development

[unix-history] / usr / man / cat1 / su.0

SU(1)               UNIX Programmer's Manual                SU(1)



N\bNA\bAM\bME\bE
    su - substitute user id temporarily

S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS
    s\bsu\bu [ -f ] [ - ] [ userid ]

D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
    _\bS_\bu demands the password of the specified _\bu_\bs_\be_\br_\bi_\bd, and if it
    is given, changes to that _\bu_\bs_\be_\br_\bi_\bd and invokes the Shell _\bs_\bh(1)
    or _\bc_\bs_\bh(1) without changing the current directory.    The user
    environment is unchanged except for HOME and SHELL, which
    are taken from the password file for the user being substi-
    tuted (see _\be_\bn_\bv_\bi_\br_\bo_\bn(7)).  The new user ID stays in force
    until the Shell exits.

    If no _\bu_\bs_\be_\br_\bi_\bd is specified, ``root'' is assumed.  Only users
    in the ``wheel'' group (group 0) can _\bs_\bu to ``root'', even
    with the root password.  To remind the super-user of his
    responsibilities, the Shell substitutes `#' for its usual
    prompt.

    The -\b-f\bf option prevents _\bc_\bs_\bh(1) from executing the .cshrc
    file; thus making _\bs_\bu start up faster.

    The -\b- option simulates a full login.

S\bSE\bEE\bE A\bAL\bLS\bSO\bO
    sh(1), csh(1)



























Printed 7/9/88             May 5, 1986                          1