setenv 1 user commands nosh setenv set an environment variable then chain setenv var val next-prog C-shells have a built-in setenv command that does not chain. See the manual for each individual shell for its built-in command. setenv is a chain-loading utility that sets the environment variable var to the value val and then chain loads to next-prog with the execvp3 function. next-prog may contain its own command line options, which setenv will ignore. An empty val is not the same as unsetting the variable. For that, see unsetenv1. If either var or val contain an equals character, counter-intuitive things will happen to the environment. 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. appendpath1 prependpath1 envdir1 read-conf1 printenv1 Jonathan de Boyne Pollard