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Introduction to Linux in HPC/System configuration files
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| | <youtube width="600" height="400" right>IfD9IPixgpo</youtube> | | <youtube width="600" height="400" right>IfD9IPixgpo</youtube> |
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| − | [https://git-ce.rwth-aachen.de/hpc.nrw/ap2/tutorials/linux/-/blob/master/Slides/Linux_Intro/Linux_Intro.pdf Linux Introduction] Slides 119 - 128 (10 pages)
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| − | === Slide Layout === <!--T:5-->
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| − | page 1:
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| − | Special files in /proc, e.g. /proc/cpuinfo and /proc/meminfo
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| − | display with cat
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| − | cannot be edited
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| − | page 2:
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| − | environment variable PATH
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| − | Directories are separated by :
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| − | First command found will be used.
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| − | PYTHONPATH
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| − | page 3:
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| − | environment modules for cluster
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| − | It becomes easier to switch environment.
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| − | page 4:
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| − | environment modules: definition file for each module
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| − | Example: load OpenMPI module
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| − | page 5:
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| − | Three things for environment modules:
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| − | description
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| − | prepend to path and other variables
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| − | set new variables
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| − | page 6:
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| − | Alias for long command.
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| − | How to define alias.
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| − | Examples: alias ll='ls -l'
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| − | page 7:
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| − | Environment variables and aliases settings in console are temporary.
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| − | To make them permanent: write settings into configuration file.
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| − | page 8:
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| − | Other configuration files, e.g. ~/.vimrc
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| − | Breaking .bashrc can make it impossible to login.
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| − | source <filename> to apply changes.
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| − | page 9:
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| − | What is locale?
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| − | the locale command
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| − | page 10:
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| − | Example output of locale
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| | {{hidden end}} | | {{hidden end}} |
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| − | {{Warning|mode=info|text= '''no tips in this section'''}}
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| | {{Warning|mode=warn|text= ''' Be very careful, when editing configuration files. A faulty configuration file may prevent a user from login to computer'''}} | | {{Warning|mode=warn|text= ''' Be very careful, when editing configuration files. A faulty configuration file may prevent a user from login to computer'''}} |
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| − | {{Note|'''Exercises in Terminal: no exercises in this section'''}}
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Revision as of 11:39, 5 October 2020
Video
Quiz
CollapseIn which system file could you find the CPU information of a Linux computer?
| Warning: | Be very careful, when editing configuration files. A faulty configuration file may prevent a user from login to computer |