bashrc for a new machine, or some temporary login, to avoid the clumsy primitive environment

bashrc

#
# .bashrc online
# one cmd usage:
#	source <(curl -s https://gist.githubusercontent.com/qins/2e1f5808ad68238168a01f64396e8aa8/raw)

# If not running interactively, don't do anything
case $- in
    *i*) ;;
      *) return;;
esac

## other source
# Source global definitions
# cause bug on history and some where else
#if [ -f /etc/bashrc ]; then
#    . /etc/bashrc  
#fi

## Prompt style
# Define some colors first:
colorInit(){
    # color need []
    DARKGRAY='\[\e[1;30m\]'
    red='\[\e[0;31m\]'
    RED='\[\e[1;31m\]'
    LIGHTRED='\[\e[1;31m\]'
    green='\[\e[0;32m\]'
    GREEN='\[\e[1;32m\]'
    yellow='\[\e[0;33m\]'
    YELLOW='\[\e[1;33m\]'
    blue='\[\e[0;34m\]'
    BLUE='\[\e[1;34m\]'
    cyan='\[\e[0;36m\]'
    CYAN='\[\e[1;36m\]'
    white="\[\e[0;37m\]";
    NC='\[\e[0m\]'              # No Color
}
colorInit

## in case of other shell as defalt
#alias sh="/bin/bash"

## bash prompt
PS1="[ "
PS1+="\[${yellow}\]\u"; # username
PS1+="\[${white}\] at ";
PS1+="\[${red}\]\h"; # host
PS1+="\[${white}\] in ";
PS1+="\[${green}\]\w\[${white}\]"; # working directory full path
PS1+=" ]"
PS1+="\n";
PS1+="\$ \[${NC}\]"; # `$` (and reset color)
export PS1;

PS2="\[${yellow}\]→ \[${NC}\]";
export PS2;

# init the environment (like a login)
alias sul="su --login"

## ssh shortcut
# Add tab completion for SSH hostnames based on ~/.ssh/config, ignoring wildcards
[ -e "$HOME/.ssh/config" ] && complete -o "default" -o "nospace" -W "$(grep "^Host" ~/.ssh/config | grep -v "[?*]" | cut -d " " -f2- | tr ' ' '\n')" scp sftp ssh;

## hosts
HOSTALIASES=$HOME/.hosts

## file and dir
# dir
alias cd..="cd .."
alias cd-="cd -"

# soft link
alias lns="ln -s"

# file concise time log
# temp=${temp##.}: rm the head '.'
function cptime() { temp=$(basename $1);temp=${temp##.};cp $1 ${temp}_$(date +%Y%m%d_%H%M%S) ;}
function mkdirtime() { mkdir ${1}_$(date +%Y%m%d_%H%M%S) ;}

# list file
eval `dircolors`
alias lt="ls -t -r --color"
alias ll="ls -l -hS --color"
alias la="ls -tAr --color"
alias tree='tree --charset ASCII'
function lls() { ls -l -S -A -r -h --color $* | perl -lane 'next if $. == 1; print "$F[4]\t$F[5],$F[6],$F[7]\t$F[8]"'; }
function llt() { ls -l -t -A -r -h --color $* | perl -lane 'next if $. == 1; print "$F[5],$F[6],$F[7]\t$F[4]\t$F[8]"'; }
# detail file list
function lfd() { cat $* | xargs ls -l -t -A -r -h -d --color; }

# list full path
function lf() { echo -e "\n$PWD/$1\n"; ls $PWD/$1; }

# find file in .
function ff() {
if [ -z "$2" ]; then
dir='./'
else
dir=$2
fi

if [ "$1" == "big" ] ; then
	find $dir -type f -size +10M ; 
elif [ "$1" == "time" ];then
	find $dir -type f ! -newermt "2017-11-01 00:00:00"; 
#find . -newermt "2013-01-01 00:00:00" ! -newermt "2013-01-02 00:00:00"
else
	find $dir -type f -iname '*'$1'*' -ls ; 
fi
}

## rm file, but backup
trash_dir="$HOME/.local/share/Trash/files"
function trash() {
  now="$(date +%Y%m%d_%H%M%S)"
  trash_now_dir=$trash_dir/$now
  mkdir -p $trash_now_dir
  mv --backup=t "$@" $trash_now_dir
}
function emptytrash() {
   rm -rf $trash_dir
   mkdir $trash_dir
}

### system control
# port usage
function portUsage() {
if [ -z "$1" ]; then
netstat -tln;
else
netstat -anp | grep $1;
fi
}

# file size
alias duc="du -shc"
# disk size
alias dfh="df -h"

## default file/dir permission
umask 027

## language
#export LC_ALL=C
#export LC_CTYPE="zh_CN.UTF-8"
export LANG=en_US.UTF-8
#export LC_CTYPE="en_US.UTF-8"

## kill crush
function pskill() { ps aux | grep $1 | perl -lane 'print $F[1]' | xargs kill; }
## grep process
function psgrep() { ps aux | grep $1; }

# editor
alias vi="vim"
export EDITOR=vi

[[ $- == *i* ]] && stty -ixon

# Update $LINES and $COLUMNS when terminal size changes.
shopt -s checkwinsize
# Enable extended globbing functionality.
shopt -s extglob
# minor errors in the spelling of a directory component in a cd command will be corrected
shopt -s cdspell
# Bash replaces directory names with the results of word expansion when performing filename completion 
shopt -s direxpand
# Bash attempts spelling correction on directory names during word completion if the directory name initially supplied does not exist
shopt -s dirspell
# the pattern ‘**’ used in a filename expansion context will match all files and zero or more directories and subdirectories.
shopt -s globstar
# completion-ignore-case
case "$TERM" in
xterm*|rxvt*)
bind "set completion-ignore-case on"
;;
esac
# avoid execute clipboard content
bind "set enable-bracketed-paste on"

### utils
# count line number
alias wl="wc -l"
# count byte
function wcc() { echo $* | wc -c; }


# check data file
# make less more friendly for non-text input files, see lesspipe(1)
[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"
alias les="less -S"
alias le="less -SN"
# ANSI color escape sequences
alias cles="less -RS"
function cole() { column -t -s $'\t' $* | less -SN; }
function csvcheck() { cat $1 | perl -lane 's/,/\t/g;print' | cole; }
alias head1="head -1"
alias egrep="egrep --color=auto"
alias sort="sort --parallel 8 --buffer-size=5G"

# history search
function hs() { history | grep --color $*; }

# Handy Extract Program.
function extract() 
{
    if [ -f $1 ] ; then
        case $1 in
            *.tar.bz2)   tar xvjf $1     ;;
            *.tar.gz)    tar xvzf $1     ;;
            *.tar.xz)    tar Jxvf $1     ;;
            *.bz2)       bunzip2 $1      ;;
            *.rar)       unrar x $1      ;;
            *.gz)        gunzip $1       ;;
            *.tar)       tar xvf $1      ;;
            *.tbz2)      tar xvjf $1     ;;
            *.tgz)       tar xvzf $1     ;;
            *.zip)       unzip $1        ;;
            *.Z)         uncompress $1   ;;
            *.7z)        7z x $1         ;;
            *)           echo "'$1' cannot be extracted via >extract<" ;;
        esac
    else
        echo "'$1' is not a valid file"
    fi
}

### coding
# chmod all files 744
alias cx="ls | perl -lane 'print if (/\.r$/i || /\.sh$/i || /\.pl$/i ||/\.py/i)' | xargs chmod 754"

# x server
export DISPLAY=:0.0

### env setting

# home
PATH=".:$HOME:$HOME/bin:$HOME/.local/bin:$PATH"

# tools path
PATH="$HOME/tools/bin:$PATH"
# links to tools bin
function lnt() { ln -s $1 $HOME/tools/bin; }

# snap bin
PATH="/snap/bin:$PATH"

# local bin
PATH=$HOME/local/bin:$PATH

LD_LIBRARY_PATH="/usr/lib64/:/lib/x86_64-linux-gnu/:$HOME/tools/lib/:$LD_LIBRARY_PATH:$HOME/.local/lib/lib/"
export LD_LIBRARY_PATH

export PATH

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