4 ms·
Regarding the `line` script, just a note that sed can print an arbitrary line from a file, no need to invoke a pipeline of cat, head, and tail: sed -n 2p f
by southwindcg 1y ago
Regarding the `line` script, just a note that sed can print an arbitrary line from a file, no need to invoke a pipeline of cat, head, and tail:
sed -n 2p file
prints the second line of file. The advantage sed has over this line script is it can also print more than one line, should you need to:
sed -n 2,4p file
prints lines 2 through 4, inclusive.
- tonmoy 1y agoIt is often useful to chain multiple sed commands and sometimes shuffle them around. In those cases I would need to keep changing the fist sed. Sometimes I need to grep before I sed. Using cat, tail and head makes things more modular in the long run I feel. It’s the ethos of each command doing one small thing
- southwindcg 1y agoTrue, everything depends on what one is trying to do at the time.
- 1-more 1y agoyeah I almost always start with `cat` but I still pipe it into `sed -n 1,4p`
- mmsc 11mo agoIf you'd like to print the middle of a file, try out `body`: https://github.com/megamansec/body https://github.com/megamansec/body