exclude from data specific expressions if a group of words occure first
1177
Regular expression to match a line that doesn't contain a word
71986
How to make Regex choose words separately
78203
sed: delete all occurrences of a string except  the first one
28187
How to replace the first occurence in an expression instead of replacing all?
60430
How to match all words of one column against words in another column
5763
How to preserve the order of terms in the output
5755
Case sensitive in data attribute
37492
Custom word boundaries in regular expression
34883
Remove specific duplicates (all but latest)
50742
Can grep output only specified groupings that match?
147011
Regular expression for excluding special characters
13462
Remove all occurrences of a value from a list?
134221
Search if number is contained within an expression like: 1-3,5,10-15,20
152345
Omitting the second expression when using the if-else shorthand
129038
How to exclude text portions by simply setting a variable or option?
156073
Extract the first word of a string in a SQL Server query
9171
regex for matching something if it is not preceded by something else