[yurow@localhost 下載]$ su --help
用法:su [選項(xiàng)]... [-] [用戶 [參數(shù)]...]
Change the effective user id and group id to that of USER.
-, -l, --login make the shell a login shell
-c, --command=COMMAND pass a single COMMAND to the shell with -c
--session-command=COMMAND pass a single COMMAND to the shell with -c
and do not create a new session
-f, --fast pass -f to the shell (for csh or tcsh)
-m, --preserve-environment do not reset environment variables
-p same as -m
-s, --shell=SHELL run SHELL if /etc/shells allows it
--help 顯示此幫助信息并退出
--version 輸出版本信息并退出
單獨(dú)的 - 代表 -l。如果未給出[用戶],則假定為 root。
請(qǐng)向 <bug-coreutils@gnu.org> 報(bào)告錯(cuò)誤。