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Malin Freeborn
2026-04-21 04:29:51 +02:00
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108
shell/readline.md Normal file
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---
title: Use the terminal in vi-mode
tags:
- shell
- vi
- comfy
- readline
---
# Vi-Commands
Copy, move, and delete with vi-keys.
```sh
echo 'set editing-mode vi' >> ~/.inputrc
echo 'set keymap vi-insert' >> ~/.inputrc
exec bash
```
Try `ls <C-n>` and `ls <C-p>`
Use python in vi-mode
```sh
echo 'export PYTHON_BASIC_REPL=true' >> ~/.bashrc
exec bash
```
# Alias Expansion
```sh
echo '"\C- ": shell-expand-line' >> ~/.inputrc
exec bash
```
Now you can expand all aliases with 'Control + Space'.
Try just `ls`, then 'Control + Space'.
# Glob Expansion (`*`)
```sh
echo '"\C-x": glob-expand-word' >> ~/.inputrc
exec bash
ls *<C-x>
```
Are you sure you want to delete that?
```sh
rm -r *<C-x>`
```
Clean up the Downloads folder:
```sh
rm Downloads/*pdf<C-x>`
```
# Arbitrary Commands
Make a keyboard shortcut to type anything.
Use `\n` as a 'newline' character to automatically press `<Return>`.
```sh
echo 'Control-y: "| lolcat\n"' >> ~/.inputrc
exec bash
ls<C-y>
```
Clear the screen and have a fresh look with `C-l`.
```sh
Control-l: "\C-u clear -x && ls\n"
exec bash
cd /etc/<C-l>
```
# Fix Globs!
If you put the vi-commands in the wrong place in `.inputrc`, they stop working.
Put them at the start:
```sh
sed '/ vi/d' ~/.inputrc
sed -i '/ vi/d' ~/.inputrc
sed '1 i set editing-mode vi' .inputrc
sed -i '1 i set editing-mode vi' ~/.inputrc
sed -i '2 i set keymap vi-insert' ~/.inputrc
```
# Vi-sibility
The `readline` prompt becomes confusing if you don't remember if you're in insert or normal mode.
But you can show the current mode in the prompt:
```sh
echo 'set show-mode-in-prompt on' >> ~/.inputrc
exec bash
```
Set new symbols for normal and insert mode:
```sh
echo 'set vi-ins-mode-string " "' >> ~/.inputrc
echo 'set vi-cmd-mode-string " "' >> ~/.inputrc
```

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shell/setup/quality_of_life.md
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---
title: Quality of Life
tags:
- basics
- setup
---
This & That
===========
Refer to 'that last thing', and 'the first thing':
```sh
fortune -l > file1
cat !$ | tr -d u
diff !^ !$
```
**NB:** this can go wrong:
```sh
ls -l file1 file2
cat !^
```
Done
----
`<C-d>`
- If you have a command, Control + d will execute the command.
- If you have nothing, `exit`.
Clear Search Highlights
=======================
`<Esc>+u`
Input Run-Commands (`~/.inputrc`)
=================================
Alias Expansion
---------------
```sh
echo '"\C- ": shell-expand-line' >> ~/.inputrc
exec bash
```
Now you can expand all aliases with 'Control + Space'.
Try just `ls`, then 'Control + Space'.
Glob Expansion (`*`)
--------------------
```sh
echo '"\C-x": glob-expand-word' >> ~/.inputrc
exec bash
ls *<C-x>
```
- Are you sure you want to delete that?
* `rm -r *<C-x>`
- Clean up the Downloads folder:
* `rm Downloads/*pdf<C-x>`
Arbitrary Commands
------------------
Use `\n` as a 'newline' character to automatically press `<Return>`.
```sh
echo 'Control-y: "| lolcat\n"' >> ~/.inputrc
exec bash
ls<C-y>
```
```sh
Control-l: "\C-u clear -x && ls\n"
exec bash
cd /etc/<C-l>
```
Readline as Vi
--------------
```sh
echo 'set editing-mode vi' >> ~/.inputrc
echo 'set keymap vi-insert' >> ~/.inputrc
exec bash
```
The prompt now works according to `vi`-motions.
This goes much further than the bash-option, `set -o vi` ('set option: `vi`').
It changes the cursor in the terminal, not just bash.
Try:
- `ls <C-n>`
- `ls <C-p>`
- Type some words.
- `<Esc>0dw$p`
- <Esc> to normal-mode, and go back with 'b', and forward with 'e'.
- `4b` to step back four times.
- `cE`
- `<Esc>kcw`
- ls -a<Esc>xxxx
Readline can work with python one you set `PYTHON_BASIC_REPL` to `true`.
```sh
echo 'export PYTHON_BASIC_REPL=true' >> ~/.bashrc
exec bash
```
```python
im<C-n>os<Return>
os.li<C-n><Return>
<Esc>kfn
<C-d>
```
Fix Globs!
----------
If you tried the previous commands then they will not work any more, because the `vi`-commands overwrite the other commands.
Remove them.
```sh
sed '/ vi/d' ~/.inputrc
sed -i '/ vi/d' ~/.inputrc
sed '1 i set editing-mode vi' .inputrc
sed -i '1 i set editing-mode vi' ~/.inputrc
sed -i '2 i set keymap vi-insert' ~/.inputrc
```
Vi-sibility
-----------
The `readline` prompt becomes confusing if you don't remember if you're in insert or normal mode.
But you can show the current mode in the prompt:
```sh
echo 'set show-mode-in-prompt on' >> ~/.inputrc
exec bash
```
Set new symbols for normal and insert mode:
```sh
echo 'set vi-ins-mode-string " "' >> ~/.inputrc
echo 'set vi-cmd-mode-string " "' >> ~/.inputrc
```
Fuzzy Sort
==========
Check your repos for `sk-im`, and install.
The program is called `sk`.
```sh
FUZZY=sk
```
If you don't have it, `fzy` or `fzf` should work the same way.
```sh
FUZZY=fzy
```
Find some 'read-config' files to check out:
```sh
find . -maxdepth 2 -name "*rc"
find . -maxdepth 2 -name "*rc" | $FUZZY
```
And read some:
```sh
PAGER='less -R'
$PAGER "$(find . -maxdepth 2 -name "*rc" | $FUZZY)"
```
Make the change long-term:
```sh
alias rrc='$PAGER "$(find . -maxdepth 2 -name "*rc" | sk)"'
alias | grep rrc= >> ~/.bash_aliases
```

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---
title: Shell tips
tags:
- shell
- comfy
---
# This & That
Refer to 'that last thing', and 'the first thing':
```sh
fortune -l > file1
cat !$ | tr -d u
diff !^ !$
```
**NB:** this can go wrong:
```sh
ls -l file1 file2
cat !^
```
# Done
`<C-d>`
- If you have a command, Control + d will execute the command.
- If you have nothing, `exit`.
# Clear Search Highlights
`<Esc>+u`
Works in most programs with search.