Extract one word after a specific word on the same line
bash, csh, linux
Solution
With `awk`:
awk '{for(i=1;i<=NF;i++) if ($i=="--pe_cnt") print $(i+1)}' inputFile
Basically loop over each word of the line. When you find the first you are looking for, grab the next word and print it.
With `grep`:
grep -oP "(?<=--pe_cnt )[^ ]+" inputFile
Problem
How can I extract a word that comes after a specific word in Linux (csh)? More precisely, I have a file which has a single line which looks like this: ``` [some useless data] --pe_cnt 100 --rd_cnt 1000 [some more data] ``` I want to extract the number `100` which is after the `--pe_cnt` word. I cannot use sed as that works only if you want to extract an entire line. Maybe I can use awk? Also, I have multiple files that have different values instead of `100` so I need something that extracts the value but doesn't depend on the value.