Why doesn't the '?' regex character produce a match in sed?
9141
Why does my regular expression work in X but not in Y?
42244
Replace \n by a newline in sed portably
84953
Multi-Line Sed Replace
56008
How to use variables in sed command
152832
Variable substitution into a sed script
1978
What to do Regular expression pattern doesn't match anywhere in string?
30421
Escape a string for a sed replace pattern
60118
Extra Backslash Required in First Appended Newline in sed
142164
Why does my grep expression need to use $'string' to match tab characters?
59179
greediness in sed
131755
inserting in the line using sed
116024
Simple find and replace with sed
121382
Bash regular expression pattern matching spaces, within double brackets test, using "~=" operator
12642
sed command not giving proper output for regular expression used
54837
How do I use variables in a sed command?
42283
Using sed with special characters
11847
sed unknown option to `s' in bash script