Grep lines but let the first line through
27852
How to grep a specific line _and_ the first line of a file?
36074
Grep lines between start & end pattern even end pattern in next file
128116
How to find patterns across multiple lines using grep?
151207
How do I substitute only first occurence with sed?
147579
Split line into key-value pairs based on first string
107158
grep with logic operators
106427
grep egrep multiple-strings
107892
output neighbouring lines with line numbers while grepping
13433
Removing the first line of CSV file
138004
How can I use awk to (sometimes) remove the first character of a column?
50962
Reading grep patterns from a file
134946
How to ignore the first line of data when processing CSV data?
130238
Using sed, how do you print the first 'N' characters of a line?
121072
concatenate lines based on first char of next line
41139
Modifying the search result of grep
105605
Find each line matching a pattern but print only the line above it
103963
What is the opposite of "grep"?