Iizuki‭

uname, short for Unix Name, is part of GNU coreutils, and thus very likely already installed: $ uname --kernel-release 6.13.3-...

posted 11mo ago by Iizuki‭

How to get the version of the currently running Linux kernel? I'm looking for a commandline solution, but feel free to post GUI solutions as well.

3 answers  ·  posted 11mo ago by Iizuki‭  ·  last activity 3mo ago by Mr. Beedell, Roke Julian Lockhart (RJLB)‭

How to convert a markdown file to PDF? The final PDF output should represent the rendered markdown file. Bonus points if the method also preserves colored emojis. Both CLI and GUI solutions are we...

2 answers  ·  posted 1y ago by Iizuki‭  ·  last activity 1y ago by samcarter‭

The standard cp tool from GNU coreutils just copies files silently. This can be a little unnerving when copying large chunks of data. You're left to wonder whether it's actually doing something or ...

5 answers  ·  posted 3mo ago by Iizuki‭  ·  last activity 1mo ago by GeraldS‭

An exclamation mark followed by space in the beginning of a pipeline will negate the final exit code of the pipeline. Here's an example in Bash. Echoing $? will print out the exit code of the prev...

posted 2y ago by Iizuki‭  ·  edited 2y ago by Iizuki‭

How to convert a json file to yaml? Technically json is already valid yaml, but I'm talking about the characteristic easy-to-read yaml formatting with indentation and minimal quotes.

1 answer  ·  posted 2y ago by Iizuki‭  ·  last activity 2mo ago by ArtOfCode‭

How to find the exact path to an executable file present in your PATH. I.e. commands you can call by just their names. E.g. what executable gets called when I type find and hit enter? $ hypotheti...

3 answers  ·  posted 1y ago by Iizuki‭  ·  last activity 1y ago by Ordoviz‭

There's a sha1sum tool in GNU coreutils. Here's $ sha1sum emptyfile da39a3ee5e6b4b0d3255bfef95601890afd80709 emptyfile Note the spaces and the filename (emptyfile in this case) in the output...

posted 1y ago by Iizuki‭  ·  edited 1y ago by Iizuki‭

GNU which does the trick: $ which find /usr/bin/find It's very likely already installed.

posted 1y ago by Iizuki‭

dmidecode can do this. Here's an example output from my system: # dmidecode --type 2 Getting SMBIOS data from sysfs. SMBIOS 3.1.1 present. Handle 0x0002, DMI type 2, 15 bytes Base Board Info...

posted 1y ago by Iizuki‭

With yq: $ yq --output-format yaml . file.json > file.yaml . is a filter which is applied to the data, but since . just stands for the document root, this means that the data is passed throu...

posted 2y ago by Iizuki‭  ·  edited 1y ago by Iizuki‭

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 2y ago by Iizuki‭  ·  last activity 1y ago by Quasímodo‭

This is how to save it to a file: $ gpg --export --armor key-id > my-key.pub --armor stands for the format with printable characters.

posted 2y ago by Iizuki‭

xmllint from xmllib2 can do this: $ output-dirty-xml | xmllint --format - The dash in the end tells xmllint to read from stdin instead of a file. Source: manpage

posted 2y ago by Iizuki‭

How to get the number of lines in a file? I.e. for a file like this: Line one Line 2 Final line I would like to do something like this: $ count-lines /path/to/the/file/above 3

2 answers  ·  posted 2y ago by Iizuki‭  ·  last activity 2y ago by Michael‭