note hiseldl <p>I don't know what you will be using it for, but if you just want to run a couple commands, then a sub-shell may work for you; just exit from the subshell, when you're done...</p> <code># I use bash, but you can put csh here, if you want # I added "--norc" so that PS1 is not overridden $ perl -e '$ENV{SQUIRREL}="brown";$ENV{PS1}="subshell> ";system("bash", "--norc")' subshell> echo $SQUIRREL brown subshell> exit exit $ echo $SQUIRREL $ </code> <p>The problem here is that you may forget that you're in a sub-shell and spawn several subshells. One way to address that is to add an environment variable to your script, say, for example, <code>$ENV{MYSCRIPTISRUNNING}="YES"</code>, then you could simply exit if this env variable exists, preventing multiple subshells. This is not foolproof, but it's a start.</p> <p>N.B. This creates a <strong>sub</strong>-shell, and the <strong>env changes will be lost</strong> once you exit all the way out back to your original shell.</p> <p>HTH.</p> <!-- Node text goes above. Div tags should contain sig only --> <div class="pmsig"><div class="pmsig-178658"> <P>--<br/>[hiseldl]<br/>What time is it? It's [190308|Camel Time!]</P> </div></div> 590013 590013