Merge branch 'dev' into vhs

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Malin Freeborn 2023-09-04 20:29:11 +02:00
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---
title: "lf - The Light File Manager"
tags: [ "Documentation", "File Browser" ]
---
## Config File
If you don't have a `~/.config/lf/lfrc` file, you can probably find an example in `/usr/share/examples/lf`.
```bash
cp -r /usr/share/examples/lf ~/.config/
```
Go straight to root with two keys.
```bash
map g/ cd /
```
Have lf open a file with the default program when you press 'o', using the program `mimeo`.
```bash
map o &mimeo $f
```
Change that default text editor to look at the extension first.
```bash
cmd open ${{
case $(file --mime-type $f -b) in
application/x-sc) sc-im $fx;;
text/html) w3m $fx;;
text/*) $EDITOR $fx;;
video/*) nohup mpv $fx --really-quiet >/dev/null &;;
*) nohup $OPENER $fx >/dev/null &;;
esac
}}
```
The idea here is to use the default `$OPENER` for lf, but first check extensions.
Note the extra `mpv` commands to leave the video to play, without blocking the terminal.
### Interesting Options
You can set the screen ratio with
`set ratios 1:2:3`
That leaves it as a small initial pane, a medium pane, and a large pane for file previews.
### Rename
The standard renaming is bad, because you have to re-type the file extension.
Use this instead:
```bash
# rename current file without overwrite
cmd rename %echo 'name: ' ; read name ; extension="${f##*.}" && newname="$name.$extension"; [ "$f" = "$extension" ] && newname="$name"; [ ! -e "$newname" ] && mv "$f" "$newname" || echo file exists
map r push :rename<enter>
```
If you try to rename `image_1.png` with this command, you can type in `cats`, and the result will be `cats.png`.
## Image Previews
First, install `ueberzug` (to show images).
Then clone the lfrun repo.
```bash
git clone https://github.com/cirala/lfimg.git
cd lfimg
sudo make install
```

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# Ubuntu
https://linuxconfig.org/vnc-server-on-ubuntu-18-04-bionic-beaver-linux
# On server
Enable remote desktop access.
```bash
sudo apt install vnc4server xfce4 xfce4-goodies
```
Disable the vncserver desktop:
```bash
vncserver -kill :1
```
Replace the config in ~/.vnc/xstartup with:
`#!/bin/bash`
`startxfce4 &`
# Arch
Install tigervnc, then run it to set a password:
```bash
vncserver
```
You'll get a session number.
Shut it down with the 'kill' command and the session's number:
```bash
vncserver -kill :1
```
This will forward over port 5900+x where x is the session number. For the first server, that's port 5901.
# Create a systemd service
```bash
sudo vim /etc/systemd/system/vncserver@:1.service
```
Then enter:
> [Unit]
> Description=Remote desktop service (VNC)
> After=syslog.target network.target
>
> [Service]
> Type=simple
> User=foo
> PAMName=login
> PIDFile=/home/%u/.vnc/%H%i.pid
> ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
> ExecStart=/usr/bin/vncserver %i -geometry 1440x900 -alwaysshared -fg
> ExecStop=/usr/bin/vncserver -kill %i
>
> [Install]
> WantedBy=multi-user.target
Then enable that service:
```bash
sudo systemctl start vncserver@:1.service
```