<center><h3>BASH</h3><a href="https://steempeak.com/@wglenz">Published with SteemPeak</a></center>
<center><h6> $ ./configure<br>$ make<br># make install</h6></center>
<center>Screenshot by Willi Glenz</center>
<center><h4>SUMMARY</h4></center>
```
001 BASH .............................................................. v1 19-05
011 bash-guide-for-beginners .......................................... v1 19-06
012 advanced-bash-scripting-guide ..................................... v1 19-06
010 aliases ........................................................... v2 19-06
009 job-control ....................................................... v1 19-06
005 environment ....................................................... v1 19-05
002 script-editor ..................................................... v3 19-05
006 tools ............................................................. v1 19-05
007 tests ............................................................. v1 19-05
004 while-loop ........................................................ v1 19-05
013 bash-to-fish|zsh .................................................. v1 19-06
014 one-liner & cowsay ................................................ v1 19-06
015 zsh ............................................................... v1 19-06 new
003 ~/.bashrc ......................................................... v4 19-06
008 ~/.bash_history ................................................... v1 19-06
010 ~/.bash_aliases ................................................... v2 19-06
```
<br>
<center><h4>#015</h4></center>
```
015 ZSH
```
```
$ apt install zsh
OH-MY-ZSH
• github.com/robbyrussell/oh-my-zsh
$ sh -c "$(wget https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh -O -)"
$ uninstall_oh_my_zsh
```
```
• MAN-Pages : $ man zsh
• FAQ : zsh.sourceforge.net/FAQ/
```
<br>
```
014 ONE-LINER & COWSAY
```
```
INSTALLATION
$ cp ~/.bashrc ~/.bashrc_old
$ echo 'clear' >> ~/.bashrc
$ echo 'echo' >> ~/.bashrc
$ echo 'neofetch' >> ~/.bashrc
$ echo 'cowsay -W 80 -f moose $(cat ~/bin/oneliner.txt | shuf -n1)' >> ~/.bashrc
$ echo 'echo'
$ . ~/.bashrc
ONE-LINER-TEXTFILE
$ vim ~/bin/oneliner.txt
# bash -c "sync; echo 3 > /proc/sys/vm/drop_caches"
# find / -uid 1000 -exec chown -v 1002:1002 {} \;
# find / -user userxyz -type f -exec rm -f {} \;
# find /home -user userxyz -mtime -3
# find /home -user userxyz -size +1G
# mkdir -p /mnt/ram; mount -t tmpfs tmpfs /mnt/ram -o size=8192M
$ alias ea='vim ~/.bash_aliases && source ~/.bash_aliases'
$ cat /etc/passwd | cut -d: -f7 | sort | uniq -c | sort -nr
$ cat /etc/shells
$ curl cheat.sh/:list | less
$ curl wttr.in
$ echo "It is now $(date +%T) on $(date +%A)"
$ find -size +100M | less
$ find -size +1G | less
$ find . -name "*.jpg" -exec convert {} -scale 50% +repage {} \;
$ find /etc -type f -print 2> /dev/null | less
$ find /etc/*tab -type f -print
$ find ~ -maxdepth 1 -type f -exec grep "^alias " '{}' \; -print
$ find ~ -maxdepth 1 -type f -exec grep "^alias " '{}' \; -print
$ find ~ -maxdepth 1 -type f -mtime 3
$ mkdir -p Backups/{Sales,Development,HR}/{Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec}/{Sun,Mon,Tue,Wed,Thu,Fri,Sat}
$ mkdir -p dummy/{1..100}/{1..100}
$ mount | column -t
$ mpg123 -zvC /home/user/music/*
$ ranger ~/.local/share/Trash/
$ scp -r folder/ user@a.b.c.d:~
$ scp dummy.txt user@a.b.c.d:~
$ sudo -H pip install --upgrade youtube-dl
$ watch -d -n 5 ls -l
$ watch free -h
$ watch mail
:%sort
:wq
```
<br>
```
013 BASH-TO-FISH|ZSH
```
```
$ grep -i user /etc/passwd
$ echo $SHELL
$ cat /etc/shells
# apt install fish zsh
$ cat /etc/shells
• Option 1: # vim /etc/passwd
• Option 2: $ chsh -s /usr/bin/fish
• Option 3: # usermod -s /bin/bash user
$ chsh -s /usr/bin/fish
$ chsh -s /bin/fish
$ cat /etc/passwd | cut -d: -f7 | sort | uniq -c | sort -nr
```
<br>
```
012 ADVANCED-BASH-SCRIPTING-GUIDE
```
```
# apt search abs-guide
# apt show abs-guide
# apt install abs-guide
$ dpkg -L abs-guide
> file:///usr/share/doc/abs-guide/html/index.html
```
```
tldp.org/LDP/abs/html/
```
<br>
```
011 BASH-GUIDE-FOR-BEGINNERS
```
```
ldp.org/LDP/Bash-Beginners-Guide/html/index.html
```
<br>
```
010 ALIASES
```
```
$ alias
$ ls -l ~/.bash_aliases
$ cp ~/.bash_aliases ~/.bash_aliases_backup
$ alias > ~/.bash_aliases
$ vim ~/.bashrc
if [ -f ~/.bash_aliases ]; then
. ~/.bash_aliases
fi
:wq
$ vim ~/.bash_aliases
alias a='clear; echo; alias; echo'
alias c='clear; neofetch; cowsay -W 131 -f moose $(cat ~/bin/oneliner.txt | shuf -n1); echo'
alias cc='clear; ncal -wy'
alias ea='vim ~/.bash_aliases && source ~/.bash_aliases'
alias gl='clear; glances'
alias gu='clear; guake &'
alias h='clear; echo; history 30; echo'
alias i='intellij-idea-community &'
alias l='clear; echo; lsd -l; echo'
alias py='clear; python3'
alias r='ranger'
alias s='clear; curl rate.sx/steem@30d'
alias sc='screen -S firstsession'
alias ss='clear; curl rate.sx/steem@1d; gnome-screenshot -ac'
alias ti='clear; tilda&'
alias tm='clear; timew month'
alias tt='clear; task burndown.daily'
alias ttt='clear; task calendar 2019'
alias tw='timew'
alias u='clear; sudo apt update && sudo apt upgrade && sudo apt dist-upgrade; sudo apt autoremove -yy'
alias yt='sudo -H pip install --upgrade youtube-dl'
:wq
```
<br>
```
009 JOB-CONTROL
```
```
$ vim ~/.vimrc <ctrl+z>
$ vim ~/.bashrc <ctrl+z>
$ ranger <ctrl+z>
$ htop <ctrl+z>
$ glances &
$ jobs
$ fg 1
RUN A BACKGROUNd-JOB
$ sleep 10000 &
$ jobs -l
$ kill 12345
SOURCES
$ help jobs
$ help fg
$ help bg
```
<br>
```
008 HISTORY
```
```
$ lsd -l | vim - -g ................................... vim
```
<br>
```
007 TESTS
```
```
STRINGS
$ [ StringA = StringB ]; echo $?
$ [ StringA != StringB ]; echo $?
$ [ -z String ]; echo $?
$ [ -n String ]; echo $?
NUMBERS
$ [ "$NUM" -eq 10 ]; echo $?
$ [ "$NUM" -neq 10 ]; echo $?
$ [ "$NUM" -gt 10 ]; echo $?
$ [ "$NUM" -ge 10 ]; echo $?
$ [ "$NUM" -lt 10 ]; echo $?
$ [ "$NUM" -le 10 ]; echo $?
$ [ -f fileName ]; echo $?
$ [ -d directory ]; echo $?
```
```
$ man test
```
<br>
```
006 TOOLS
```
```
$ shellcheck ~/bin/script.sh
```
<br>
```
005 ENVIRONMENT
```
```
$ printenv | awk '/PATH|HOME|USER|SHELL/ {print $0}'
```
<br>
```
004 WHILE-LOOP
```
```
┊ #!/bin/bash
┊ # while-loop
┊ # ~/bin/wl
┊ # wl set `date`
┊
┊ [ -z "$1" ] && exit 1
┊
┊ echo "Command : $0"
┊ echo "Count Args: $#"
┊
┊ COUNTER=1
┊ while [ -n "$1" ]
┊ do
┊ echo "Argument ${COUNTER}: $1"
┊ shift
┊ COUNTER=`expr $COUNTER + 1`
┊ done
┊
┊ exit
```
<br>
```
003 BASHRC
```
```
$ mkdir ~/bin
$ cp ~/.bashrc ~/.bashrc_old
$ vim ~/.bashrc
HISTCONTROL=ignoreboth:erasedups
HISTSIZE=1000
HISTFILESIZE=1000
if [ -f ~/.bash_aliases ]; then
. ~/.bash_aliases
fi
set -o vi
bind -m vi-insert "\C-l":clear-screen
EDITOR=/usr/bin/vim
VISUAL=$EDITOR
export EDITOR VISUAL
export PATH=$HOME/bin:$PATH
:wq
```
<br>
```
002 SCRIPT-EDITOR
```
```
┊ #!/bin/bash
┊ # scripteditor
┊ # ~/bin/ed
┊ # ed scriptname.sh
┊
┊ [ -z "$1" ] && exit 1
┊
┊ DIR=~/bin/
┊
┊ vim "$DIR$1"
┊ chmod 744 "$DIR$1"
┊ clear; echo; lsd -l; echo
┊
┊ exit
```
<br>
```
001 BASH
```
```
SESSION
$ sudo !!
# apt-get update && apt-get upgrade && apt-get dist-upgrade; apt-get autoremove -yy
# init 0
# init 6
# shutdown -c
# shutdown -h 1:00
# shutdown -r now
SUDO
# visudo
> Defaults:user timestamp_timeout=30
```
```
Homepage : gnu.org/software/bash/
Documentation : gnu.org/software/bash/manual/html_node/index.html
```