While on the surface this seems to be a simple question with an obvious answer it actually is not because of 2 factors: The word pattern is ambiguous – we don’t know if the OP wants to do a regexp match or a string match, and The word match is ambiguous – we don’t know … Read more
In awk, FNR refers to the record number (typically the line number) in the current file, NR refers to the total record number. The operator == is a comparison operator, which returns true when the two surrounding operands are equal. This means that the condition NR==FNR is only true for the first file, as FNR … Read more
Never use the word “pattern” as is it highly ambiguous. Always use “string” or “regexp” (or in shell “globbing pattern”), whichever it is you really mean. The specific answer you want is: awk ‘f{print;f=0} /regexp/{f=1}’ file or specializing the more general solution of the Nth record after a regexp (idiom “c” below): awk ‘c&&!–c; /regexp/{c=1}’ … Read more
with sed sed -r ‘s_([^/]+/)__’ similarly with awk awk ‘{sub(/[^/]+\//,””)}1’ however, cut is the most proper tool for this task cut -d/ -f2-
With GNU grep: grep ‘[[:alpha:]]’ file or GNU sed: sed ‘/[[:alpha:]]/!d’ file Output: 0hjjAby68xp H5e