CLI tools

There are many utilities available on PSMN clusters.

Bash

Compute jobs launched on clusters are most often initialized by user-written shell scripts. Beyond that, many common operations can be simplified and automated using shell scripts.

For an introduction to shell scripting, you can refer to:

• Bash Programming - Introduction HOWTO [en]

• Introduction à la programmation en Bash [fr]

• The Art of Command Line [en, fr, …]

ShellCheck

For all shell scripts, use shellcheck linter command to find syntax errors, and sometimes bugs. It can also be used online : https://www.shellcheck.net/

Detox

From detox man page:

The detox utility renames files to make them easier to work with. It removes spaces and other such annoyances. It’ll also translate or cleanup Latin-1 (ISO 8859-1) characters encoded in 8-bit ASCII, Unicode characters encoded in UTF-8, and CGI escaped characters in filenames.

iconv

Help converting files from one encoding to another.

Screen & Tmux

screen and tmux are terminal multiplexers. They replace the nohup command, which is banned on PSMN. They are installed on all PSMN clusters. You can use either one, or both, depending on your preferences.

We provide a reference card (pdf), and you can read the Tao of tmux

Some configuration files are also available at /applis/PSMN/debian11/skeletons/ (.screenrc, .tmux.conf)

Reptyr

reptyr is used to re-attach a process, which has been started from another terminal, from the same user, on the same host, to the active terminal.

reptyr is installed on all PSMN clusters.