ZSH and terminal setup for unix-like systems

.zshrc

# If you come from bash you might have to change your $PATH.
# export PATH=$HOME/bin:/usr/local/bin:$PATH

DEFAULT_USER=`whoami`

# Path to your oh-my-zsh installation.
export ZSH="$HOME/.oh-my-zsh"

# Set name of the theme to load --- if set to "random", it will
# load a random theme each time oh-my-zsh is loaded, in which case,
# to know which specific one was loaded, run: echo $RANDOM_THEME
# See https://github.com/ohmyzsh/ohmyzsh/wiki/Themes
ZSH_THEME="powerlevel10k/powerlevel10k"
POWERLEVEL9k_MODE="nerdfont-complete"
POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS=(virtualenv status root_indicator background_jobs history time)

# Set list of themes to pick from when loading at random
# Setting this variable when ZSH_THEME=random will cause zsh to load
# a theme from this variable instead of looking in $ZSH/themes/
# If set to an empty array, this variable will have no effect.
# ZSH_THEME_RANDOM_CANDIDATES=( "robbyrussell" "agnoster" )

# Uncomment the following line to use case-sensitive completion.
# CASE_SENSITIVE="true"

# Uncomment the following line to use hyphen-insensitive completion.
# Case-sensitive completion must be off. _ and - will be interchangeable.
# HYPHEN_INSENSITIVE="true"

# Uncomment the following line to disable bi-weekly auto-update checks.
# DISABLE_AUTO_UPDATE="true"

# Uncomment the following line to automatically update without prompting.
# DISABLE_UPDATE_PROMPT="true"

# Uncomment the following line to change how often to auto-update (in days).
# export UPDATE_ZSH_DAYS=13

# Uncomment the following line if pasting URLs and other text is messed up.
# DISABLE_MAGIC_FUNCTIONS="true"

# Uncomment the following line to disable colors in ls.
# DISABLE_LS_COLORS="true"

# Uncomment the following line to disable auto-setting terminal title.
# DISABLE_AUTO_TITLE="true"

# Uncomment the following line to enable command auto-correction.
# ENABLE_CORRECTION="true"

# Uncomment the following line to display red dots whilst waiting for completion.
# Caution: this setting can cause issues with multiline prompts (zsh 5.7.1 and newer seem to work)
# See https://github.com/ohmyzsh/ohmyzsh/issues/5765
# COMPLETION_WAITING_DOTS="true"

# Uncomment the following line if you want to disable marking untracked files
# under VCS as dirty. This makes repository status check for large repositories
# much, much faster.
# DISABLE_UNTRACKED_FILES_DIRTY="true"

# Uncomment the following line if you want to change the command execution time
# stamp shown in the history command output.
# You can set one of the optional three formats:
# "mm/dd/yyyy"|"dd.mm.yyyy"|"yyyy-mm-dd"
# or set a custom format using the strftime function format specifications,
# see 'man strftime' for details.
# HIST_STAMPS="mm/dd/yyyy"

# Would you like to use another custom folder than $ZSH/custom?
# ZSH_CUSTOM=/path/to/new-custom-folder

# Which plugins would you like to load?
# Standard plugins can be found in $ZSH/plugins/
# Custom plugins may be added to $ZSH_CUSTOM/plugins/
# Example format: plugins=(rails git textmate ruby lighthouse)
# Add wisely, as too many plugins slow down shell startup.
plugins=(virtualenv zsh-autosuggestions zsh-syntax-highlighting)

# source ~/.oh-my-zsh/plugins/git/git.plugin.zsh
# source /usr/local/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh
# source $HOME/.oh-my-zsh/plugins/virtualenv/virtualenv.plugin.zsh

source $ZSH/oh-my-zsh.sh

# User configuration

# export MANPATH="/usr/local/man:$MANPATH"

# You may need to manually set your language environment
# export LANG=en_US.UTF-8

# Preferred editor for local and remote sessions
# if [[ -n $SSH_CONNECTION ]]; then
#   export EDITOR='vim'
# else
#   export EDITOR='mvim'
# fi

# Compilation flags
# export ARCHFLAGS="-arch x86_64"

# Set personal aliases, overriding those provided by oh-my-zsh libs,
# plugins, and themes. Aliases can be placed here, though oh-my-zsh
# users are encouraged to define aliases within the ZSH_CUSTOM folder.
# For a full list of active aliases, run `alias`.
#
# Example aliases
# alias zshconfig="mate ~/.zshrc"
# alias ohmyzsh="mate ~/.oh-my-zsh"


# directory for virtualenvs created using virtualenvwrapper
export WORKON_HOME=$HOME/.virtualenvs

# ensure all new environments are isolated from the site-packages directory
export VIRTUALENVWRAPPER_VIRTUALENV_ARGS='--no-site-packages'

# use the same directory for virtualenvs as virtualenvwrapper
export PIP_VIRTUALENV_BASE=$WORKON_HOME

# makes pip detect an active virtualenv and install to it
export PIP_RESPECT_VIRTUALENV=true
export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python
if [[ -r /usr/local/bin/virtualenvwrapper.sh ]]; then
    source /usr/local/bin/virtualenvwrapper.sh
else
    echo "WARNING: Can't find virtualenvwrapper.sh"
fi

export PYTHONDONTWRITEBYTECODE=1

##################################
# ALIASES START #

########
# Git related
########
alias gcom="git commit "
alias gcoma="git commit --amend "
alias gshow="git show"
alias gadd="git add "
alias gmrg="git merge "
alias gpull="git pull"
alias gpush="git push"
alias gco="git checkout "
alias glg="git log"
alias gdiff="git diff "
alias gst="git status"
alias gdmas="git diff origin/master..."
alias grsl="git reset HEAD~1 --soft"

alias gstal="git stash list"
alias gstaa="git stash apply"
alias gstad="git stash drop"
alias gstas="git stash save "
alias gsta="git stash "

function gf() {
  branch=$1;
  shift;
  git fetch origin -f "$branch":"$branch"
}

# git master commands
alias gnbmas="git checkout master && git pull && git checkout -b "
alias gdmas="git diff origin/master..."

function gnb() {
  branch_to_checkout=$1;
  shift;
  git checkout "$branch_to_checkout" && git pull && git checkout -b $@
  echo "rest of args is: $@"
}

function gdlm() {
  # Git Diff Last Merged
}

function gpretty() {
  # Pretty prints between 2 revisions e.g. tag_name against master
  prev_rev=$1;
  current_rev=$2;
  git log --pretty=format:%s%n%b%n----------- --merges --first-parent $prev_rev..$current_rev
}

alias git_reset_merged="git reset --merge ORIG_HEAD"

function gprunelocal() {
  # Prunes local branches that have been orphaned (remote deleted etc.)
  # Does a dry run if no args specified, must include a yes to prune for real
  should_prune=$1
  if [[ $should_prune == 'YES' ]]
  then
    git remote prune origin
  else
    git remote prune origin --dry-run
  fi
}

#######
# Golang module build
#######
# alias gomodulebuild="GO111MODULE=on go mod vendor"

#######
# pyenv virtualenvs
#######
alias pyls="pyenv versions"
alias py-version-install="pyenv install "
alias py-version-uninstall="pyenv uninstall "
function pymakevenv() {
  mkvirtualenv --python=`pyenv root`/versions/$1/bin/python $2
}
# lsvirtualenv
# rmvirtualenv {venv_name}
# workon {venv_name}
# deactivate


######
# Port checking command
######
alias grep-port-listen="lsof -i -P -n | grep LISTEN"

######
# Rsync and SSH utils
######
function rsynccp() {
  # Uses rsync with the following options -chavzP --stats to copy from remote to local
  # For explanation of what the flags do, check man rsync OR http://explainshell.com/explain?cmd=rsync+-chavzP+--stats+user%40remote.host%3A%2Fpath%2Fto%2Fcopy+%2Fpath%2Fto%2Flocal%2Fstorage
  if [[ $# -ne 2 ]]; then
    echo "2 args required: ssh-host@ssh-ip:/path/to/file/or/dir /path/to/destination"
    echo "You passed in $#"
    return 2
  fi

  rsync -chavzP --stats $1 $2
}

#######
# SSH config
#######
alias showssh="cat ~/.ssh/config| grep Host"

#######
# zsh utils
#######
alias zshr="source ~/.zshrc"
alias zshe="vi ~/.zshrc"
alias zhclear_history='echo "" > ~/.zsh_history & exec $SHELL -l'
alias zsha="sed -n '/# ALIASES START #/,/# ALIASES END #/p' ~/.zshrc
"
# ALIASES END #

ZSH-and-oh-my-zsh-setup.md

Last Updated: 26/05/2021

1. Install ZSH

sudo apt install zsh

2. Install oh-my-zsh

sh -c "$(curl -fsSL https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"

3. Change default shell used to zsh

chsh -s $(which zsh)

4. Install Powerlevel10k

Follow the instructions as laid in the link above for oh-my-zsh

extra steps for customisation are located here: Stylizing Your Prompt

git clone --depth=1 https://github.com/romkatv/powerlevel10k.git ${ZSH_CUSTOM:-$HOME/.oh-my-zsh/custom}/themes/powerlevel10k

5. Install ZSH plugins used

• zsh-autosuggestion
• zsh-syntax-highlighting

git clone https://github.com/zsh-users/zsh-autosuggestions ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-autosuggestions
git clone https://github.com/zsh-users/zsh-syntax-highlighting.git ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-syntax-highlighting

Python setup

=> Cross reference from here: https://gist.github.com/wronk/a902185f5f8ed018263d828e1027009b