bashrc Collection: Bashrc - tips and tricks ,tweaks and quallity of life improvements

[Herr.Hoefkens]

HI the purpose of this topic is to collect as many as possible bash improvements and set t ings that live in your bash running config( ~/.bashrc*0

 

 

A few rules beforehand:

- every thing posted should atleast a description for what it does

- and the depencies it may or may not have if they arend part of coreutils and or the posix std.

- !!!! NO FUNCTIONS !!!  if you want to share a neat  function , and its not user specific , you can still post it  but make sure it  can operate as

 - a stand alone shell script in /opt/bin/ or /usr/bin/ or allow for dropping in /etc/profile.d  or /etc/bash/bashrc.d/ without requiring anyting more than a simple call from bashrc or  a source instruction

 -  please also separate the aliasses that are distro specific , into a seperate  code block so people can copy whole sections without cluttering their env wit aliases that wont work on their system...

- if you do need to store something in the env please try to use a bash array ifits more than a single variable, and prefix the variable with the corename of the thing.

- for any code that creates new files on the system a procedure to remove all those files automaticly needs to be  included , even as a part of an istaller or part of the make file ... eg

-dont assume people have sudo installed just write the thing as if ran by root , if it fails when run as regular user , not a problem but an error complaining about permissions is easier fixed than an error about file not found.

ill start of with my discoveries  some of them really old : 2004+ some of them only recent additions and i wish i had  known since the beginning.

(if possible i will correct any mistakes and also try keeping this list up to date with replies)

 

 

note there is nothing about history control inhere , as i have written a seperate script to deal with bashhistory and logging that. i will post this section on  the blog on my  profile

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Intro:

in bash there are some special variables that are worth knowing about:

$$ = the PID of the current instance

$_ = the last argument fromp previous comand

mkdir -p ~/some/long/complicated/path/
cd $_

$@ stores all arguments passed to a script

$? stores the return value of last executed ommand (use this to test if it failed or was success)

$PS1 is the  prompt that gets printd after each command

$COLLUMS stores the width of the curent shell

$LINES stores the height

 

section: start of file

______________________________________________________________________________________________________________________________________________________

#!/usr/bin/env bash
# ############################################################################
# # REPO: {Gitrepo}                            AUTHOR:   {Author contact info}
# # FILE: {intended filename}                               {last upd/version}
# ############################################################################
#

# Dont do anything if not interactivel:
[[ $- != *i* ]] && return

 

X11 only:

# Share X Server With All Users
\xhost + > /dev/null 2>&1

 

Systemd only:

# Load Profile Again when chrooting:
[[ "$UID" == 0 ]] &&  $(systemd-detect-virt -r) && source /etc/profile || : 

 

extra info :

-----------

xhost + : turns of  access control to the xserver
 this is needed for xnest or xephir (2ways to run a desktop inside a window.)

 

detect-virt () :  systemd users only: useless for other init systems
this systemd-detect-virt -r will exit with code 0 if inside chroot,

if we are ,need to also source /etc/profile again

 

 

 

section : bash options

# Bash won't get SIGWINCH if another process is in the foreground.
# Enable checkwinsize so that bash will check the terminal size when
# it regains control.  #65623
# http://cnswww.cns.cwru.edu/~chet/bash/FAQ (E11)
shopt -s checkwinsize
# Disable completion when the input buffer is empty.  i.e. Hitting tab and waiting a long time for bash to expand all of $PATH.
# shopt -s no_empty_cmd_completion
# extended globbing
shopt -s extglob
# expand aliasses
shopt -s expand_aliases
# enable * wildcard includes .-files (ex: rm ~/tmp/* removes .test and test |fix for .* wich includes ..)
shopt -s dotglob
# reedit a history substitution line if it failed
shopt -s histreedit
# edit a recalled history line before executing
shopt -s histverify
# Enable history appending instead of overwriting.  #139609
shopt -s histappend
# change to named directory
shopt -s autocd
# change directory to variables
shopt -s cdable_vars
# autocorrects cd misspellings
shopt -s cdspell
# save multi-line commands in history as single line
shopt -s cmdhist
# no Case globbing **1
shopt -s nocaseglob

 

 

Section: keybindings :

# # PgUp/PgDn go to the beginning/end of the history
# # Use the up and down arrow keys for finding a command in history
# # (you can write some initial letters of the command first).
bind '"\e[A":history-search-backward' 
bind '"\e[B":history-search-forward'
bind '"\e[5~":beginning-of-history'
bind '"\e[5~":end-of-history'
bind 'set completion-ignore-case on'


#[A is up arrow
#[B is down arrow
#[5~ is pgup
#[6~ is pgdn

 

 

Section : exports :

# Default Editor:
export EDITOR="/usr/bin/env nvim"
# PYTHON
export PYTHONPATH="${PYTHONPATH}:${HOME}/Development/Code/Python/"             #if any replace this where you store git
export PYTHONPATH="${PYTHONPATH}:${HOME}/Development/Code/Python/Projects/"    #python code and or homebrew projects

Nvidia gfx card owners Only:

# NVIDIA
## NVIDIA Vulkan
export VK_ICD_FILENAMES="/usr/share/vulkan/icd.d/nvidia_icd.json"

# MANPAGER
# Bat as Default Manpager 
export MANPAGER="sh -c 'col -bx | bat -l man -p'"

 

Spoiler

 

t

#colorize Manpages
#if bat is not the default manpager, make them look a litte better:
export LESS_TERMCAP_mb=$'\e[1;32m'
export LESS_TERMCAP_md=$'\e[1;32m'
export LESS_TERMCAP_me=$'\e[0m'
export LESS_TERMCAP_se=$'\e[0m'
export LESS_TERMCAP_so=$'\e[01;33m'
export LESS_TERMCAP_ue=$'\e[0m'
export LESS_TERMCAP_us=$'\e[1;4;31m'

#LSCOLORS (colors for the ls command)
dircolors -b 411_dir.colors
LS_COLORS='rs=0:di=01;34:ln=02;37:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=00;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;40:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.zst=01;31:*.tzst=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.wim=01;31:*.swm=01;31:*.dwm=01;31:*.esd=01;31:*.jpg=01;35:*.jpeg=01;35:*.mjpg=01;35:*.mjpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.webp=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.m4a=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.oga=00;36:*.opus=00;36:*.spx=00;36:*.xspf=00;36:';
export LS_COLORS
use_color=true

Spoiler

 

 

alias rebash='source ~/.bash_profile'

alias ll='ls -hals'
alias llr='ls -Rhals'

alias frqmax='sudo cpupower frequency-set -g performance'
alias frqmin='sudo cpupower frequency-set -g powersave'
alias frqinfo='sudo cpupower frequency-info'

alias cp="cp -iv"                          # confirm before overwriting something
alias df='df -h'                          # human-readable sizes
alias free='free -m'                      # show sizes in MB
alias np='micro -w PKGBUILD'
alias more=less
alias du='du -hc'

alias yas='yay -Ss'
alias yayy='yay --noconfirm'

alias Bdu='sudo btrfs file du --human-readable -s'
alias Bdf=''
alias BS='sudo btrfs subv'     #= btrfs subvolume $
alias lsBS='sudo btrfs subv list' #= btrfs subvolume list $
alias ddBS='sudo btrfs subv snapshot' #= btrfs subvolume duplicate  $
alias mkBS='sudo btrfs subv create' #= btrfs subvolume list $
alias rmBS='sudo btrfs subv delete' #= btrfs subvolume list $

alias BF='sudo btrfs file'    #= btrfs filesystem $
alias pip='sudo pip'

alias ntfxall="sudo lsblk -o PATH,FSTYPE  | awk '/ntfs/ {print $1}'| xargs -n1 sudo ntfsfix -d"

# if eza is installed :
alias ls='eza --icons'
#list
alias ls='ls --color=auto'
alias la='ls -a'
#alias ll='ls -la'
alias ll='ls -Al'
alias lsdot="ls -A | egrep '^\.'"
alias ls1="ls -1A"

## Colorize the grep command output for ease of use (good for log files)##
alias grep='grep --color=auto'
alias egrep='egrep --color=auto'
alias fgrep='fgrep --color=auto'

#readable output
#alias df='df -h'


#fix obvious typo's
alias cd..='cd ..'
alias pdw="pwd"
alias udpate='sudo pacman -Syyu'
alias upate='sudo pacman -Syyu'
alias updte='sudo pacman -Syyu'
alias updqte='sudo pacman -Syyu'
alias upqll="yay -Syu --noconfirm"
alias upal="yay -Syu --noconfirm"


#ps
alias psa="ps auxf"
alias psgrep="ps aux | grep -v grep | grep -i -e VSZ -e"

#free
alias free="free -mt"

#use all cores
alias uac="sh ~/.bin/main/000*"
#grub update
alias update-grub="sudo grub-mkconfig -o /boot/grub/grub.cfg"

#add new fonts
alias update-fc='sudo fc-cache -fv'
#continue download
alias wget="wget -c"

#userlist
alias userlist="cut -d: -f1 /etc/passwd"