Log for Ubuntu 台灣社群
Shell options:
-ilrsD or -c command or -O shopt_option (invocation only)
-abefhkmnptuvxBCHP or -o optionIf the shell is started with the effective user (group) id not equal to the real user (group) id, and the
-p option is not supplied, no startup files are read, shell functions are not inherited from the environ‐
ment, the SHELLOPTS, BASHOPTS, CDPATH, and GLOBIGNORE variables, if they appear in the environment, are
ignored, and the effective user id is set to the real user id. If the -p option is supplied at invoca‐
tion, the startup behavior is the same, but the effective user id is not reset.
-p option is not supplied, no startup files are read, shell functions are not inherited from the environ‐
ment, the SHELLOPTS, BASHOPTS, CDPATH, and GLOBIGNORE variables, if they appear in the environment, are
ignored, and the effective user id is set to the real user id. If the -p option is supplied at invoca‐
tion, the startup behavior is the same, but the effective user id is not reset.