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Termux: Debian on Android (tips and tricks)

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Backup Termux

You may use tar to backup your Termux installation for migration to other devices, or simply as a precaution. (Be sure to install the 'tar' package before doing so, and close and restart Termux. Otherwise busybox will repeatedly fail on the --owner/--group flags, as it doesn't support them.)

Backup process

	$ cd /data/data/com.termux/files
	$ tar -cvzf /sdcard/Download/termux.tgz --owner=0 --group=0 home usr 

Restoration process

	$ cd /data/data/com.termux/files
	$ tar -xvzf /sdcard/Download/termux.tgz

Upon closing and re-running Termux, you should now have a restored version of your previous environment.

Note that if you have KDEConnect or GNOME connect installed, you can use those to transfer your backup to a desktop/laptop system for safekeeping. (I use rsync, but that's personal preference.)

Clover's Favourite packages

Stuff I install almost each and every time (your needs will be different, I can almost guarantee it):

apt-get install bc bmon diffutils dnsutils ffmpeg file gawk htop \
imagemagick less lynx neofetch nmap openssh perl procps rsync \
screen subversion util-linux vim wget termux-am termux-api \
termux-auth termux-exec termux-tools

Running programs or services at boot

To run things at boot, you need to create a directory and add simple scripts to it, which Termux will run as it opens.

$ mkdir -p ~/.termux/boot
$ touch ~/.termux/boot/start

A few examples, are set up a script to always take wake-lock so programs stay running in the background, and start sshd and crond.

$ chmod +x ~/.termux/boot/start
$ vim ~/.termux/boot/start
	# set wake lock
	termux-wake-lock
	# run crond if it isn't already running
	pgrep crond || crond
	# run sshd if it isn't already running (commented out unless needed)
	#pgrep sshd || sshd
	:wq

The next time it is started, these programs should auto-run. If you want to trigger it manually, you may, as it's a simple shell script.

$ ~/.termux/boot/start

Using apt-cacher-ng

If you use apt-cacher-ng to save bandwidth, as I do, ensure that Termux uses apt-cacher-ng's proxying services by editing ~/../usr/etc/apt.conf. Add the correct IP or hostname:

	$ vim ../usr/etc/apt.conf
	Acquire::http::Proxy "http://192.168.0.5:3142";
	APT::Keep-Downloaded-Packages "true";
	#APT::Install-Recommends "false";

Owing to the fact that apt-cacher-ng doesn't support https (because it can't), we'll also need to change ~/../usr/etc/apt/sources.list like so:

	$ vim ../usr/etc/apt/sources.list
	# The main termux repository:
	#deb https://termux.net stable main
	deb http://termux.net stable main

Once done, re-run apt-get update && apt-get upgrade. You should see the repo appear and begin to populate on your cacher's filesystem.

Toggle extra keyboard row

Termux comes with a neat feature to give you soft-key access to some keys that would not normally be available. If you use a keyboard that already has these (such as Multiling OKeyboard), then it's not of much use and simply takes up screen real estate.

To disable or enable it, swipe from the left of your screen to open the session manager tray. Press and hold on the Keyboard toggle, and it will hide/show the key bar.

Terminal bell

If you don't like terminal feed back, you can disable it with ~/.termux/termux.properties

bell-character=ignore

Removing the line should cause Termux to pulse the vibrator motor, and if you like an audible bell, you can do this instead:

bell-character=bell

SD card access

Termux is a prefixed Linux installation, and thus it cannot access some or all of the underlying Android OS without some additional work.

To set things up, you'll need to install termux-tools:

	$ apt-get install termux-tools termux-api
	$ termux-setup-storage
	$ cd storage/
	$ ls
	./   dcim@       external-1@  music@     shared@
	../  downloads@  movies@      pictures@
	$ ls shared/
	./                Documents/       Podcasts/    bluetooth/
	../               Download/        Ringtones/   crosswords/
	'Acrylic Paint'/   Movies/          TWRP/        eve.st.zip
	Alarms/           Music/           Telegram/    osmdroid/
	Android/          Notifications/   apk/         s/
	DCIM/             Pictures/        backups/     s_html/




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