How-To Geek on MSN

A beginner's introduction to Bash parameter expansions

Encountering unset variables is common when scripting. Often your script needs to ask questions about values before using ...
How-To Geek on MSN

The 4 Excel find and replace tricks I use to save hours

Click "Format" next to the Replace With field, and select the correct number format in the Number tab (in this case, ...