clearenv 1 user commands nosh clearenvclear the entire environment then chain clearenv --keep-path --keep-user --keep-shell --keep-term --keep-locale --keep-uid next-prog clearenv is a chain-loading utility that clears the entire environment and then chain loads to next-prog with the execvp3 function. next-prog may contain its own command line options, which clearenv will ignore. When the --keep-path command line option is used, clearenv will not clear the PATH and LD_LIBRARY_PATH environment variables. When the --keep-locale option is used, it will not clear the environment variables used by the GNU C Library for locale settings, namely LANG, LC_ALL, LC_COLLATE, LC_CTYPE, LC_MESSAGES, LC_MONETARY, LC_NUMERIC, and LC_TIME. When the --keep-uid option is used, it will not clear the environment variables used by getuidgid1, envuidgid1, and login-envuidgid1 to pass user and group IDs; namely UID, GID, and GIDLIST. Similarly --keep-shell stops the clearing of SHELL, SHLVL, and ENV; --keep-term stops the clearing of TERM7, TERMPATH, TERMINFO, TERMINFO_DIRS, COLORTERM, XTERM_VERSION, VTE_VERSION, and TTY; and --keep-user stops the clearing of HOME, USER, and LOGNAME. As of version 1.34 this program no longer employs the GNU C library nor the BSD C library for environment variable handling. The previously documented workaround for those libraries' having memory leaks in their setenv3 and clearenv3 functions, is therefore no longer necessary. unsetenv1 setenv1 envdir1 userenv1 Jonathan de Boyne Pollard