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Q&A

Posts tagged shell-scripting

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60%
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Q&A How to use the gitignore file without git(1).

How can a file list be manually filtered with a gitignore file. I want to do the equivalent of git ls-files, but it should work even if I remove .git, so I can't use git(1). Currently, I'm doing ...

1 answer  ·  posted 7d ago by alx‭  ·  last activity 7d ago by r~~‭

66%
+2 −0
Q&A Run pipeline in the background from git hook

I'm trying to run a pipeline to update a PDF after every push to the 'main' branch. I want it to be atomic, so it doesn't touch the existing PDF until it has finished, so I need to use sponge(1) (...

1 answer  ·  posted 3mo ago by alx‭  ·  last activity 3mo ago by alx‭

Question shell-scripting git
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+2 −0
Q&A Alternating 2 keyboard layouts with Key Combination

Sorry it was a typo, _ instead of -, that caused the problem. I want to have a key combination to alter the keymaps. It worked with one for us and one for hu, but now I want to use one key combina...

1 answer  ·  posted 4mo ago by Arpad Horvath‭  ·  edited 4mo ago by Arpad Horvath‭

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Q&A How to invert command exit code?

How to apply a logical not to a shell command, e.g. in a Bash script? So if the command exited with 0 (success) I would like it to be changed to a non-zero value, and if it exited with a non-zero ...

1 answer  ·  posted 4mo ago by Iizuki‭  ·  last activity 4mo ago by Iizuki‭

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Q&A How to run a command on a list of files?

Suppose I have a list of files on standard input. These may be the output of find, cat filelist.txt or something else. How can I run a command on each file in turn?

3 answers  ·  posted 9mo ago by matthewsnyder‭  ·  last activity 4mo ago by alx‭

Question shell-scripting
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Q&A Higher-order functions in Bash?

Say I have some Bash function my-func, that expects a filename and does some processing on the corresponding file. For demonstration purposes, my-func() { cat "$1"; } If I want to apply that fu...

1 answer  ·  posted 5mo ago by Karl Knechtel‭  ·  last activity 5mo ago by Kamil Maciorowski‭

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Q&A How to automatically change to the first matching directory using fuzzy search and cd?

I want the cd command to automatically change to the first directory that matches a fuzzy search, without prompting me to select between multiple options. This is what I've tried: cd() { loc...

1 answer  ·  posted 1y ago by ShadowsRanger‭  ·  last activity 8mo ago by jimbobmcgee‭

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Q&A When a command takes filenames as argument, how can I avoid creating temporary files?

Suppose I have a command that takes filenames as arguments, like: diff foo.txt bar.txt What if instead of actual files, I want to use the results of a command in each? I can use temporary files: ...

2 answers  ·  posted 9mo ago by matthewsnyder‭  ·  last activity 9mo ago by Kamil Maciorowski‭

Question shell-scripting
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Q&A A shell script that can run under different shells

I have a shell script with a syntax compatible to both bash and zsh, except for a section that has zsh specific syntax that throws syntax errors if sourced from bash. Is there an easy way to escap...

2 answers  ·  posted 2y ago by 4015.alt‭  ·  last activity 2y ago by mjy‭

85%
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Q&A In a bash shell script, how to filter the command line argument list to unique entries only, for processing each?

I have a handful of shell scripts that accept any number of command line arguments, then do some relatively expensive processing based on each command line argument in turn. The general format for ...

3 answers  ·  posted 2y ago by Canina‭  ·  last activity 2y ago by Quasímodo‭