Tips for avoiding typical errors:

Online shellcheck or the command line version via "dnf install ShellCheck": Checks shell script for different shells and gives hints on avoiding errors in your script.

Bash3boilerplate Starting point for new scripts and source of best practices

Bash does behave different if being called as sh (though I think it does not behave as sh/bourne shell). So there is a difference between #!/bin/sh and #!/bin/bash even if /bin/sh is a link to /bin/bash. zsh on the other hand behaves like sh when it is called via #!/bin/sh.

Argbash is a tool for generating minimal code for argument parsing of your script.

Other articles

bash-default-variables
Published: Fri 10 March 2017
Updated: Fri 10 March 2017
By Julian

In Tooling.

tags: bash variables default in-a-nutshell sh

Default-Variable

Auf den beiden großartigen englischsprachigen Seiten zur Bash-Prgorammierung tldp und cyberciti kann man jede Menge Tricks zur Variablenmanipulation in bash finden.

Ein sehr häufiger Fall ist die Default-Variable. Dabei gibt es zwei verschieden Fälle. Der mit dem Gleichheitszeichen (=), mit integrierter Zuweisung des Wertes
```
echo ${varname:="default value"}
```
Hier hat …
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ls-tricks

Published: Fri 10 March 2017
Updated: Fri 10 March 2017
By Julian

In Tooling.

tags: in-a-nutshell ls list gid uid id except without bash zsh

Tricks with ls

List files except those with a specific extension (zsh)

To list all files in the current directory except those with special extensions often is very useful. For example if I am in a directory with many plots or many data files and only a few others in …
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Logging from a shell to the journald

Published: Fri 03 March 2017
Updated: Wed 08 March 2017
By Julian

In Tooling.

tags: bash sh journald linux systemd log logging todo

Logging into the journald is just pipeing your echoed message to systemd-cat
read more

Other articles

Default-Variable

Tricks with ls

List files except those with a specific extension (zsh)

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