Linux

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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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zcat shouldn't error out if you try to zcat an uncompressed file, it should just output the damned file ! (lemmy.ml)

submitted 3 days ago by interdimensionalmeme@lemmy.ml to c/linux@lemmy.ml

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There I said it !

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[–] allywilson@lemmy.ml 4 points 3 days ago (2 children)

Won't this cause cat to iterate through all files in the cwd once zcat encounters an issue, instead of just the specific file?

[–] LemoineFairclough@sh.itjust.works 2 points 3 days ago* (last edited 3 days ago)

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.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/

[–] MonkderVierte@lemmy.ml 1 points 3 days ago

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.