Linux is less user friendly (or at least has a steeper learning curve) but for website administration and server maintenance, its the holy grail. Here are two small utilities that a webmaster or web admin can’t live without.
sed: used for search and replace on multiple files
awk: used for data extraction and manipulation on structured text files
For a bit more information, see this article: http://radar.oreilly.com/2010/12/strata-gems-sed-and-awk.html