interdimensionalmeme@lemmy.ml to Linux@lemmy.ml · 12 days agozcat shouldn't error out if you try to zcat an uncompressed file, it should just output the damned file !message-squaremessage-square32fedilinkarrow-up180arrow-down111file-text
arrow-up169arrow-down1message-squarezcat shouldn't error out if you try to zcat an uncompressed file, it should just output the damned file !interdimensionalmeme@lemmy.ml to Linux@lemmy.ml · 12 days agomessage-square32fedilinkfile-text
minus-squareallywilson@lemmy.mllinkfedilinkarrow-up4·11 days agoWon’t this cause cat to iterate through all files in the cwd once zcat encounters an issue, instead of just the specific file?
minus-squareLemoineFairclough@sh.itjust.workslinkfedilinkEnglisharrow-up2·edit-211 days agoYou are correct. This probably produces something more similar to what you’d want the original command to do, but with better safely: find -- . -type f -regex '^\./[^/]*$' -exec sh -c -- 'for file in "${@}"; do zcat "${file}" || cat "${file}" || exit; done' sh '{}' '+' That assumes you want to interact with files with names like .hidden.txt.gz though. If you don’t, and only intend to have a directory with regular files (as opposed to directories or symbolic links or other types of file), using this is much simpler and even safer, and avoids using files in a surprising order: for i in *; do zcat -- "$i" || cat -- "$i" || exit; done Of course, the real solution is to avoid using the Shell Command Language at all, and to carefully adapt any program to your particular problem as needed: https://sipb.mit.edu/doc/safe-shell/
minus-squareMonkderVierte@lemmy.mllinkfedilinkarrow-up1·11 days agoYeah, i was tired and had $file there first, then saw that you wanted to cat all in directory. Still tired, but i think this works now.
Won’t this cause cat to iterate through all files in the cwd once zcat encounters an issue, instead of just the specific file?
You are correct. This probably produces something more similar to what you’d want the original command to do, but with better safely:
find -- . -type f -regex '^\./[^/]*$' -exec sh -c -- 'for file in "${@}"; do zcat "${file}" || cat "${file}" || exit; done' sh '{}' '+'That assumes you want to interact with files with names like
.hidden.txt.gzthough. If you don’t, and only intend to have a directory with regular files (as opposed to directories or symbolic links or other types of file), using this is much simpler and even safer, and avoids using files in a surprising order:for i in *; do zcat -- "$i" || cat -- "$i" || exit; doneOf course, the real solution is to avoid using the Shell Command Language at all, and to carefully adapt any program to your particular problem as needed: https://sipb.mit.edu/doc/safe-shell/
Yeah, i was tired and had $file there first, then saw that you wanted to cat all in directory. Still tired, but i think this works now.