clear understanding of grep backreference
322
clear meaning of .* in regex
50456
What does the 'grep' command do?
50742
Can grep output only specified groupings that match?
23105
What is the difference between `grep`, `egrep`, and `fgrep`?
43973
grep - why do brackets in grep pattern remove the grep process from ps results?
158360
How can I "grep" patterns across multiple lines?
119229
Why does "grep '.*[s]' file" work and "grep .*[s] file" doesn't?
120210
Why do directory listings contain the current (.) and parent (..) directory?
91449
Understanding Bash's Read-a-File Command Substitution
142748
Strange behaviour of "ls -a | grep ^\."
131236
what's wrong with my grep command?
103003
Recursive grep vs find / -type f -exec grep {} \; Which is more efficient/faster?
139027
Backward definition of (La)TeX commands
115402
Fixing Catastrophic Backtracking in Regular Expression
136596
grep lines starting with "1" in Ubuntu
70842
Finding unresolved references
117475
How to grep for contents after pattern?