1. The user can easily perform many types of searching, replacing and report generating tasks by using Awk, grep and sed commands. Awk is not just a command

2. Moreover, ad hoc tools like grep, while very efficient at what they do, need to check the entire contents of large files each time a search is performed.

3. The "code review audit script scanner" (Crass) started as a source code grep-er with a set of selected high-potential strings that may result in (security) problems

4. You should pipe things like 'man Bash' into grep with the -C argument set to something reasonable, it's a really useful skill – djdanlib Apr 3 '12 at 14:41 6 The question linked (that this question is a duplicate of) was asked 2 years after this question