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linux: added sibling cd navigation to shell

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tiyn 2023-10-20 00:25:37 +02:00
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@ -23,6 +23,7 @@ The following is a list of Unix shells that are POSIX compliant.
This section addresses various different functions by and actions that can be This section addresses various different functions by and actions that can be
taken with shell commands. taken with shell commands.
The focus is mostly on POSIX-compliant shells and scripts that are compatible with POSIX.
### Symbolic Links using `ln` ### Symbolic Links using `ln`
@ -190,6 +191,18 @@ The complete output of both stderr and stdout can be silenced by appending
`> /dev/null 2>&1` to the command. `> /dev/null 2>&1` to the command.
A shortened version of it not possible on all shells is `&> /dev/null`. A shortened version of it not possible on all shells is `&> /dev/null`.
### `cd` Into Next Or Previous Sibling Directory
Quickly switching to the alphabetically next or previous directory can in some cases be useful.
For this the following commands can be used.
The first one navigates to the alphabetically previous sibling directory.
The second one to the next.
```sh
cd ../"$(ls -F .. | grep '/' | grep -B1 -xF "${PWD##*/}/" | head -n 1)"
cd ../"$(ls -F .. | grep '/' | grep -A1 -xF "${PWD##*/}/" | tail -n 1)"
```
## Error solving ## Error solving
This section addresses various problems that can occur and are related to the shell. This section addresses various problems that can occur and are related to the shell.