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home_server:home_server_setup:other_services:bash [2023-03-19 Sun wk11 13:35] – [BASH History Customisation and Use] baumkphome_server:home_server_setup:other_services:bash [2024-08-03 Sat wk31 11:22] (current) – [compression] baumkp
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-{{tag> linux bash alias .bash_aliases configure configuration bashrc command script .bashrc history sudo visudo dimmer nightmode xrandr tar archive}}+{{tag> linux bash alias tar .bash_aliases configure configuration bashrc command script .bashrc history sudo visudo dimmer ps kill nightmode xrandr tar archive "default editor" editor}}
 ======BASH Customisation====== ======BASH Customisation======
 The standard BASH colour configuration uses a blue colour for listing directories (ls) which is difficult to read on a black background. While this is the "standard colour", due to the impracticality I have decided to change it. The standard BASH colour configuration uses a blue colour for listing directories (ls) which is difficult to read on a black background. While this is the "standard colour", due to the impracticality I have decided to change it.
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 Add the following commands to ''vim ~/.bashrc'', the aliases can also be added to the separate file .bash_aliases, ''vim ~/.bash_aliases'': Add the following commands to ''vim ~/.bashrc'', the aliases can also be added to the separate file .bash_aliases, ''vim ~/.bash_aliases'':
-   *''alias ll=%%'ls -la --color=auto'%%''+   *''alias ll=%%'ls -lah --time-style=long-iso --color=auto'%%''
    *''alias lh=%%'ls -laL --color=auto'%%''    *''alias lh=%%'ls -laL --color=auto'%%''
    * key ''ls'' options :    * key ''ls'' options :
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        * ''-S'' : sort by file size, largest first        * ''-S'' : sort by file size, largest first
        * ''-t''  : sort by time        * ''-t''  : sort by time
 +       * ''%%--time-style%%'' : allows the displayed time sytle to be changed.
 +           * The standard output is a disgrace, North American mixed up! Aug 23 2022 or Jan 1 11:44 for nearer dates.
 +         * ''iso'' gives 2023-01-23 for more than a year past and 10-23 15:51 for less than a few months past, yuk!
 +         * ''long-iso'' always gives yyyy-mm-dd hh:mm, without a doubt the best format, clean and consistant!
 +         * ''full-iso'' is same as long-iso, except time time is to the nanosecond and local timezone delta is displayed 
 +         * The ''TIME_STYLE'' environment variable sets the default
 ++++An example alias file:| ++++An example alias file:|
 <code bash> <code bash>
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   *[[https://bash-it.readthedocs.io/en/latest/|Welcome to Bash-it’s documentation!]]   *[[https://bash-it.readthedocs.io/en/latest/|Welcome to Bash-it’s documentation!]]
   *[[https://github.com/ohmybash/oh-my-bash|oh-my-bash]]   *[[https://github.com/ohmybash/oh-my-bash|oh-my-bash]]
-=====exa=====+====exa====
 A modern replacement for ls. A modern replacement for ls.
 I tried it and could not be bothered with it and uninstalled. I tried it and could not be bothered with it and uninstalled.
  
-=====grc=====+====grc====
 General colouriser.  I installed it but do not bother to use it normally.  General colouriser.  I installed it but do not bother to use it normally. 
  
-=====ble.sh=====+====ble.sh====
 ble.sh is a tool for bash that add command line continuation and colouring as well as other features. ble.sh is a tool for bash that add command line continuation and colouring as well as other features.
  
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   *[[https://github.com/akinomyoga/ble.sh|ble.sh ―Bash Line Editor―]]   *[[https://github.com/akinomyoga/ble.sh|ble.sh ―Bash Line Editor―]]
  
-=====BASH Prompt=====+====BASH Prompt====
 I like a standard looking prompt, none of these Apple look alike things that seem to be popular on the nerd media at the moment.  I do not see much value in the prompt showing the date as this is shown on the main GUI screen. I like a standard looking prompt, none of these Apple look alike things that seem to be popular on the nerd media at the moment.  I do not see much value in the prompt showing the date as this is shown on the main GUI screen.
  
 References References
   *[[https://www.howtogeek.com/307701/how-to-customize-and-colorize-your-bash-prompt/|How to Customize (and Colorize) Your Bash Prompt]]   *[[https://www.howtogeek.com/307701/how-to-customize-and-colorize-your-bash-prompt/|How to Customize (and Colorize) Your Bash Prompt]]
-=====Colors=====+====Colors====
 Seems like the main terminal colors is 1bit (light and dark), 4 bit or 16 colors, while "expanded" is 256 colors.  The pallet the colors can be selected from can be varied from 24bits (16M) on more modern systems. Seems like the main terminal colors is 1bit (light and dark), 4 bit or 16 colors, while "expanded" is 256 colors.  The pallet the colors can be selected from can be varied from 24bits (16M) on more modern systems.
 The LS command allows the colors to be changed via the LS_COLOR environment variable. The LS command allows the colors to be changed via the LS_COLOR environment variable.
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 ====list contents==== ====list contents====
 ''tar -tvf 'archive filename''' ''tar -tvf 'archive filename'''
 +=====ps process=====
 +''ps aux'' to see current process
 +
 +=====kill process=====
 +''killall name''
 +''pkill name''
 +''pkill -9 name''
 +
 =====compression===== =====compression=====
 Use either ''gzip'', ''bzip2'', or ''xz'' to directly compress a file Use either ''gzip'', ''bzip2'', or ''xz'' to directly compress a file
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   *''bzip2'', extension ''.bz2'', with ''tar'' use flag ''-j''   *''bzip2'', extension ''.bz2'', with ''tar'' use flag ''-j''
   *''xz'', extension ''.xz'', with ''tar'' use flag ''-J''   *''xz'', extension ''.xz'', with ''tar'' use flag ''-J''
 +
 +=====copy & paste=====
 +See [[https://wiki.kptree.net/doku.php?id=home_server:home_server_setup:other_services:misc#pbcopy_pbpaste|pbcopy pbpaste]]
 +=====Change Default System Editor=====
 +Use ''sudo update-alternatives --config editor'' and follow prompts on screen
 +
 +Reference: 
 +  *[[https://unix.stackexchange.com/questions/42726/how-do-i-change-the-default-text-editor-in-the-debian-squeeze-distro|How do I change the default text editor in the Debian (squeeze) distro]]
 +  *[[https://www.baeldung.com/linux/update-alternatives-command|The update-alternatives Command in Linux]]
 +
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