Send messages and files over Telegram from the command-line.
Telegram-send is a command-line tool to send messages and files over Telegram to your account, to a group or to a channel. It provides a simple interface that can be easily called from other programs.
Table of Contents
To send a message:
telegram-send "hello, world"
There is a maximum message length of 4096 characters, larger messages will be automatically split up into smaller ones and sent separately.
To send a message using Markdown or HTML formatting:
telegram-send --format markdown "Only the *bold* use _italics_" telegram-send --format html "<pre>fixed-width messages</pre> are <i>also</i> supported"
For more information on supported formatting, see the formatting documentation.
To send a file (maximum file size of 50 MB):
telegram-send --file document.pdf
To send an image with an optional caption (maximum file size of 10 MB):
telegram-send --image photo.jpg --caption "The Moon at night"
Telegram-send integrates into your file manager (Thunar, Nautilus and Nemo):
Install telegram-send system-wide with pip:
sudo pip3 install telegram-send
Or if you want to install it for a single user (recommended):
pip3 install telegram-send
If installed for a single user you need to add ~/.local/bin to their path:
echo 'PATH="$HOME/.local/bin:$PATH"' >> ~/.profile
(This will be in effect on the next login, do a . ~/.profile for the impatient.)
And finally configure it with telegram-send --configure if you want to send to your account, telegram-send --configure-group to send to a group or with telegram-send --configure-channel to send to a channel.
Use the --config option to use multiple configurations. For example to set up sending to a channel in a non-default configuration: telegram-send --config channel.conf --configure-channel. Then always specify the config file to use it: telegram-send --config channel.conf "hello".
Here are some examples to get a taste of what is possible with telegram-send.
alert on completion of shell commands
Receive an alert when long-running commands finish with the tg alias, based on Ubuntu’s built-in alert. Put the following in your ~/.bashrc:
alias tg='telegram-send "$([ $? = 0 ] && echo "" || echo "error: ") $(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*tg$//'\'')"'
And then use it like sleep 10; tg. This will send you a message with the completed command, in this case sleep 10.
What if you started a program and forgot to set the alert? Suspend the program with Ctrl+Z and then enter fg; telegram-send "your message here".
To automatically receive notifications for long running commands, use ntfy with the Telegram backend.
periodic messages with cron
Create a bot by talking to the BotFather, create a public channel and add your bot as administrator to the channel. You will need to explicitly search for your bot’s username when adding it. Then run telegram-send --configure-channel --config astropod.conf. We will use the apod.py script that gets the daily picture and calls telegram-send to post it to the channel.
We create a cron job /etc/cron.d/astropod (as root) with the content:
SHELL=/bin/sh PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin # m h dom mon dow user command 0 1 * * * telegram ~/apod.py --config ~/astropod.conf
Make sure the file ends with a newline. Cron will then execute the script every day at 1:00 as the user telegram. Join the astropod channel to see the result.
Supervisor process state notifications
Supervisor controls and monitors processes. It can start processes at boot, restart them if they fail and also report on their status. Supervisor-alert is a simple plugin for Supervisor that sends messages on process state updates to an arbitrary program. Using it with telegram-send (by using the --telegram option), you can receive notifications whenever one of your processes exits.
sudo telegram-send --clean sudo pip3 uninstall telegram-send
Or if you installed it for a single user:
telegram-send --clean pip3 uninstall telegram-send
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