.commonrc

# Common RC config for bash and zsh
################################################################################


# Setting the PATH in commonrc (unlike in a profile) allows to quickly update
# PATH for all new shells. However if done naively, the path might grow
# uncontrollably. To avoid this, the path_prepend/path_append functions shall
# be used.
# See: https://unix.stackexchange.com/a/32054

path_prepend() {
  case :"$PATH": in
    *:"$1":*) ;;
    *) PATH="$1":"$PATH" ;;
  esac
}

path_append() {
  case :"$PATH": in
    *:"$1":*) ;;
    *) PATH="$PATH":"$1" ;;
  esac
}

path_prepend "$HOME"/.local/bin
export PATH

unset -f path_prepend
unset -f path_append


export EDITOR="vim"

if [ -x "$(command -v nvim)" ]; then
  export EDITOR="nvim"
  alias vim='nvim'
  alias vimdiff='nvim -d'
fi

# Clear screen like real men do. (http://stackoverflow.com/a/5367075)
# This has been working with all terminals I've used so far, unlike clear.
# Note: M-C-l (ctrl-alt-L) available OotB since bash 5.1,
# cf. https://unix.stackexchange.com/a/664538
alias cls='printf \\ec'

alias here='(nautilus . 1>/dev/null 2>&1 &)'
alias rst='cd ~; reset'
alias tn='konami ping -c1 google.com'
alias open='xdg-open'
alias top='if type -p htop >/dev/null; then htop; else top; fi'
alias :q='exit'
alias myip='curl ipinfo.io/ip'
alias vimr='vim -R'
alias n='vimr -'
alias m='less'
alias mpa='mpv --no-video --mute=no --msg-level=ffmpeg=no'
alias dla='yt-dlp -f bestaudio -x --add-metadata --embed-thumbnail'

alias diff='colordiff' # requires colordiff package
alias grep='grep --color=auto'
alias df='df -h'
alias du='du -c -h'
alias du1='du --max-depth=1'
alias fdu='2>/dev/null /bin/du -Phx --max-depth 1'
alias mkdir='mkdir -p -v'
alias tmpcd='cd $(mktemp -d)'
alias ping='ping -c 5'
alias tree='tree -CF'
alias openports='netstat --all --numeric --programs --inet --inet6'

# ls
eval $(dircolors)                   # Color setup for ls
alias ls='ls -hF --color=auto'
alias lsa='ls -A'
alias lr='ls -R'                    # recursive ls
alias ll='ls -l'
alias la='ll -A'
alias lla='ll -A'
alias lx='ll -BX'                   # sort by extension
alias lz='ll -rS'                   # sort by size
alias lt='ll -rt'                   # sort by date
alias lm='la | more'
alias lsg='ls | grep -i'
alias llg='ll | grep -i'

# safety features
alias cp='cp -i'
alias mv='mv -i'
alias rm='rm -I'                    # 'rm -i' prompts for every file
alias ln='ln -i'
alias chown='chown --preserve-root'
alias chmod='chmod --preserve-root'
alias chgrp='chgrp --preserve-root'

# pacman aliases (if applicable, replace 'pacman' with your favorite AUR helper)
alias pac="pacman -S"      # default action     - install one or more packages
alias pacu="pacman -Syu"   # '[u]pdate'         - upgrade all packages to their newest version
alias pacs="pacman -Ss"    # '[s]earch'         - search for a package using one or more keywords
alias paci="pacman -Si"    # '[i]nfo'           - show information about a package
alias pacr="pacman -R"     # '[r]emove'         - uninstall one or more packages
alias pacl="pacman -Sl"    # '[l]ist'           - list all packages of a repository
alias pacll="pacman -Qqm"  # '[l]ist [l]ocal'   - list all packages which were locally installed (e.g. AUR packages)
alias paclo="pacman -Qdt"  # '[l]ist [o]rphans' - list all packages which are orphaned
alias paco="pacman -Qo"    # '[o]wner'          - determine which package owns a given file
alias pacf="pacman -Ql"    # '[f]iles'          - list all files installed by a given package
alias pacc="pacman -Sc"    # '[c]lean cache'    - delete all not currently installed package files
alias pacm="makepkg -fci"  # '[m]ake'           - make package from PKGBUILD file in current directory


bak() {
  mv -T "$1" "$1".bak
}

unbak() {
  mv -T "$1" "${1%.bak}"
}

# Read rendered markdown files in the shell
markup() {
  markdown "$1" | w3m -T text/html
}

# Display colorized information output
cinfo() {
  printf '\033[01;33m%s\033[00;00m\n' "$@"
}

# Display colorized warning output
cwarn() {
  printf '\033[01;31m%s\033[00;00m\n' "$@"
}

# Outputs a message about the number of packages ignored by Pacman
pkgblklst() {
  cf='/etc/pacman.conf'
  ip="$(cat $cf | grep -E '^[^#]*IgnorePkg\s*=' | sed 's/IgnorePkg\s*=\s*//' | sed 's/#.*//')"

  if [ $ip ]; then
    nr="$(echo $ip | wc -w)"
    cwarn ":: $nr ignored packages in $cf"
    echo " $ip"
  fi
}

# Extracts a wide range of compressed files by extension
# source: https://wiki.archlinux.org/index.php/Bash#Functions
# Alternatives: unp, atool, dtrx
extract() {
    local file cmd errs

    # If called without arguments, prints help and exits.
    (($#)) || {
      >&2 echo 'Extracts a wide range of compressed files.'
      >&2 echo 'Alternatives: atool, unp, dtrx.'
      >&2 echo
      >&2 echo 'Usage:'
      >&2 echo "  $0 FILE..."
      return 1
    }

    for file; do
        if [[ ! -r "$file" ]]; then
            echo "$0: file is unreadable: \`$file'" >&2
            errs+=1
            continue
        fi

        case "$file" in
        *.tgz|*.tlz|*.txz|*.tb2|*.tbz|*.tbz2|*.taz|\
        *.tar|*.tar.Z|*.tar.bz|*.tar.bz2|*.tar.gz|*.tar.lzma|*.tar.xz)
                cmd='bsdtar xvf';;
        *.7z)   cmd='7z x';;
        *.Z)    cmd='uncompress';;
        *.bz2)  cmd='bunzip2';;
        *.exe)  cmd='cabextract';;
        *.gz)   cmd='gunzip';;
        *.rar)  cmd='unrar x';;
        *.xz)   cmd='unxz';;
        *.zip)  cmd='unzip';;
        *)      >&2 echo "$0: unrecognized file extension: \`$file'"
                errs+=1
                continue;;
        esac

        command $cmd "$file"
        errs+=$?
    done

    ! ((errs))
}

# Colorized manpages
man() {
    # The LESS_TERMCAP_* variables are used by `less` for colorization.
    # If `less` is not the default pager, then they won't matter.
    # `tput` outputs control chars used for formatting.

    env \
    LESS_TERMCAP_mb=$(tput bold; tput setaf 1) \
    LESS_TERMCAP_md=$(tput bold; tput setaf 74) \
    LESS_TERMCAP_me=$(tput sgr0) \
    LESS_TERMCAP_so=$(tput smso; tput setaf 241; tput setab 177) \
    LESS_TERMCAP_se=$(tput rmso; tput sgr0) \
    LESS_TERMCAP_us=$(tput smul; tput setaf 146) \
    LESS_TERMCAP_ue=$(tput rmul; tput sgr0) \
    LESS_TERMCAP_mr=$(tput rev) \
    LESS_TERMCAP_mg=$(tput dim) \
    LESS_TERMCAP_ZN=$(tput ssubm) \
    LESS_TERMCAP_ZV=$(tput rsubm) \
    LESS_TERMCAP_ZO=$(tput ssupm) \
    LESS_TERMCAP_ZW=$(tput rsupm) \
    man "$@"
}


### §aliases ###################################################################

alias §§='cls'
alias §u='pkgblklst; pikaur -Syu'
alias §is='pikaur -Ss'
alias §i='pikaur -S'
alias §ir='pikaur -Rs'
alias §d='sudo systemctl'
alias §rg='nohup gnome-shell -d :0 -r &'
alias §-='r | less'

# Like `pwd` but also resolves symlinks
§() {
  local p pP
  p="$(pwd)"
  pP="$(pwd -P)"

  echo "$p"
  [ "$p" != "$pP" ] && printf ' ↳ %s\n' "$pP"
}

# Stuff I never remember when I need it
§sysinfo() {
cat <<'EOF'
Use the following command to gather information about the system:

  lscpu
    List available cpus and their caracteristics
    Not available on older distribution

  lshw
    Available on Debian and Ubuntu based distributions by default
    Available in the Fedora repositories
    Uses many inputs to detect all hardware: Kernel, HAL, DMI, etc.
    As a neat ‘-html’ switch that generates hardware reports

  lspci
    Standard command
    List all hardware connected to the PCI bus as detected by the kernel

  lsusb
    Standard command
    List all hardware connected to the USB buses as detected by the kernel

  dmidecode
    Standard command
    Get the source information from the DMI (a kind of BIOS interface)
    List all hardware as reported by the DMI interface

  uname -a
    Show kernel version and system architecture

  andhead -n1 /etc/issue
    Show name and version of distribution

  cat /proc/partitions
    Show all partitions registered on the system

  grep MemTotal /proc/meminfo
    Show RAM total seen by the system

  grep "model name" /proc/cpuinfo
    Show CPU(s) info

  lspci -tv
    Show PCI info

  lsusb -tv
    Show USB info

  mount | column -t
    List mounted filesystems on theire system (and align output)

  dmidecode -q | less
    Display SMBIOS/DMI information

  smartctl -A /dev/sda | grep Power_On_Hours
    How long has this disk (system) been powered on in total

  hdparm -i    /dev/sda
    Show info about disk sda

  hdparm -tT /dev/sda
    Do a read speed test on disk sda

  badblocks -s /dev/sda
    Test for unreadable blocks on disk sda


  Other neat tools and commands at:
    http://superuser.com/questions/303981/what-is-the-linux-command-to-find-out-hardware-info
    http://www.pixelbeat.org/cmdline.html
EOF
}