.bashrc

   1 #!/bin/bash
   2 # ~/.bashrc: executed by bash(1) for non-login shells.
   3 # A basically sane bash environment.
   4 # Resources:
   5 # - https://github.com/rtomayko/dotfiles/blob/rtomayko/.bashrc
   6
   7 # ---------------------------------------------------------------------------
   8 #  BASICS
   9 # ---------------------------------------------------------------------------
  10
  11 # short-circuit for non-interactive sessions
  12 [ -z "$PS1" ] && return
  13
  14 # the basics
  15 : ${HOME=~}
  16 : ${LOGNAME=$(id -un)}
  17 : ${UNAME=$(uname)}
  18 # strip OS type and version under Cygwin (e.g. CYGWIN_NT-5.1 => Cygwin)
  19 UNAME=${UNAME/CYGWIN_*/Cygwin}
  20
  21 # complete hostnames from this file
  22 HOSTFILE=~/.ssh/known_hosts
  23
  24 # readline config
  25 INPUTRC=~/.inputrc
  26
  27 # if current $TERM isn't valid, fall-back to TERM=xterm-color or TERM=xterm
  28 case $(tput colors 2>&1) in
  29     tput* )
  30         export TERM=xterm-color
  31         case $(tput colors 2>&1) in
  32             tput* )
  33                 export TERM=xterm
  34                 ;;
  35         esac
  36         ;;
  37 esac
  38
  39 # ---------------------------------------------------------------------------
  40 #  SHELL OPTIONS
  41 # ---------------------------------------------------------------------------
  42
  43 # notify of bg job completion immediately
  44 set -o notify
  45
  46 # shell opts. see bash(1) for details
  47 shopt -s cdspell >/dev/null 2>&1
  48 shopt -s checkjobs >/dev/null 2>&1
  49 shopt -s checkwinsize >/dev/null 2>&1
  50 shopt -s extglob >/dev/null 2>&1
  51 shopt -s histappend >/dev/null 2>&1
  52 shopt -s hostcomplete >/dev/null 2>&1
  53 shopt -s interactive_comments >/dev/null 2>&1
  54 shopt -u mailwarn >/dev/null 2>&1
  55 shopt -s no_empty_cmd_completion >/dev/null 2>&1
  56
  57 # don't check for new mail
  58 unset MAILCHECK
  59
  60 # disable core dumps
  61 ulimit -S -c 0
  62
  63 # default umask
  64 umask 0022
  65
  66 # ---------------------------------------------------------------------------
  67 # PATH
  68 # ---------------------------------------------------------------------------
  69
  70 # make sure $MANPATH has some sane defaults
  71 MANPATH="/usr/share/man:/usr/local/share/man:$MANPATH"
  72
  73 # include the various sbin's along with /usr/local/bin
  74 PATH="$PATH:/usr/local/sbin:/usr/sbin:/sbin"
  75 PATH="/usr/local/bin:$PATH"
  76
  77 # use $HOME specific bin and sbin
  78 test -d "$HOME/bin" && PATH="$HOME/bin:$PATH"
  79 test -d "$HOME/sbin" && PATH="$HOME/sbin:$PATH"
  80
  81 # macOS homebrew: include non-prefixed coreutils
  82 test -x /usr/local/opt/coreutils/libexec -a ! -L /usr/local/opt/coreutils/libexec && {
  83     # setup the PATH and MANPATH
  84     PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
  85     MANPATH="/usr/local/opt/coreutils/libexec/gnuman:$MANPATH"
  86 }
  87
  88 # SmartOS pkgin
  89 test -d "/opt/local" && PATH="/opt/local/sbin:/opt/local/bin:$PATH"
  90 test -d "/opt/local/man" && MANPATH="/opt/local/man:$MANPATH"
  91 # SmartOS local files
  92 test -d "/opt/custom" && PATH="/opt/custom/sbin:/opt/custom/bin:$PATH"
  93 test -d "/opt/custom/man" && MANPATH="/opt/custom/man:$MANPATH"
  94 # SmartOS SDC
  95 test -d "/smartdc" && PATH="/smartdc/bin:/opt/smartdc/bin:/opt/smartdc/agents/bin:$PATH"
  96 test -d "/smartdc/man" && MANPATH="/smartdc/man:$MANPATH"
  97 # SmartOS native binaries, for OS/LX zones
  98 test -d "/native" && PATH="$PATH:/native/usr/sbin:/native/usr/bin:/native/sbin:/native/bin"
  99 test -d "/native/usr/share/man" && MANPATH="$MANPATH:/native/usr/share/man"
 100
 101 # RVM
 102 test -d "$HOME/.rvm/bin" && PATH="$PATH:$HOME/.rvm/bin"
 103
 104 # setup $GOPATH
 105 test -d "/usr/local/share/golang" && export GOPATH=/usr/local/share/golang
 106 test -n "$GOPATH" && PATH="$PATH:$GOPATH/bin"
 107
 108 # ---------------------------------------------------------------------------
 109 # ENVIRONMENT CONFIGURATION
 110 # ---------------------------------------------------------------------------
 111
 112 # detect interactive shell
 113 case "$-" in
 114     *i*) INTERACTIVE=yes ;;
 115     *)   unset INTERACTIVE ;;
 116 esac
 117
 118 # detect login shell
 119 case "$0" in
 120    -*) LOGIN=yes ;;
 121    *)  unset LOGIN ;;
 122 esac
 123
 124 # enable en_US locale w/ utf-8 encodings if not already
 125 # configured
 126 : ${LANG:="en_US.UTF-8"}
 127 : ${LANGUAGE:="en"}
 128 : ${LC_CTYPE:="en_US.UTF-8"}
 129 : ${LC_ALL:="en_US.UTF-8"}
 130 export LANG LANGUAGE LC_CTYPE LC_ALL
 131
 132 # ignore backups, CVS directories, python bytecode, vim swap files
 133 FIGNORE="~:CVS:#:.pyc:.swp:.swa:apache-solr-*"
 134
 135 # history stuff
 136 HISTCONTROL=ignoreboth
 137 HISTFILESIZE=10000
 138 HISTSIZE=10000
 139
 140 # ---------------------------------------------------------------------------
 141 # PAGER / EDITOR
 142 # ---------------------------------------------------------------------------
 143
 144 # see what we have to work with ...
 145 HAVE_VIM=$(command -v vim)
 146
 147 # EDITOR
 148 test -n "$HAVE_VIM" &&
 149     EDITOR=vim ||
 150     EDITOR=vi
 151 export EDITOR
 152
 153 # PAGER
 154 if test -n "$(command -v less)" ; then
 155     PAGER="less"
 156     MANPAGER="less"
 157     LESS="-FiRX"
 158     export LESS
 159 else
 160     PAGER=more
 161     MANPAGER="$PAGER"
 162 fi
 163 export PAGER MANPAGER
 164
 165 # ---------------------------------------------------------------------------
 166 # PROMPT
 167 # ---------------------------------------------------------------------------
 168
 169 # http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 170
 171 if [ "$UID" = 0 ]; then
 172     # root
 173     PS_C1="\[\033[1;31m\]"  # red
 174     PS_C2="\[\033[0;37m\]"  # grey
 175     PS_P="#"
 176 else
 177     case "$UNAME" in
 178         Cygwin)
 179             PS_C1="\[\033[0;32m\]"  # green
 180             PS_C2="\[\033[0;37m\]"  # grey
 181             ;;
 182         Darwin)
 183             PS_C1="\[\033[1;97m\]"  # white
 184             PS_C2="\[\033[0;37m\]"  # grey
 185             ;;
 186         SunOS)
 187             PS_C1="\[\033[1;96m\]"  # cyan
 188             PS_C2="\[\033[0;36m\]"  # cyan
 189             ;;
 190         *)
 191             PS_C1="\[\033[1;93m\]"  # yellow
 192             PS_C2="\[\033[0;33m\]"  # brown
 193     esac
 194     PS_P="\$"
 195 fi
 196
 197 prompt_simple() {
 198     unset PROMPT_COMMAND
 199     PS1="[\u@\h:\w]\$ "
 200     PS2="> "
 201 }
 202
 203 prompt_compact() {
 204     unset PROMPT_COMMAND
 205     PS1="${PS_C1}${PS_P}\[\033[0m\] "
 206     PS2="> "
 207 }
 208
 209 prompt_color() {
 210     # if git and the git bash_completion scripts are installed, use __git_ps1() to show current branch info.
 211     # never show branch info for $HOME (dotfiles) repo.
 212     # use the following to exclude a given repo: `git config --local --bool --add bash.hidePrompt true`
 213     if [ -n "$(type -P git)" -a "$(type -t __git_ps1)" = "function" ]; then
 214         PS_GIT='$(test -n "$(__git_ps1 %s)" &&
 215                   test "$(git rev-parse --show-toplevel)" != "$HOME" &&
 216                   test "$(git config --bool bash.hidePrompt)" != "true" &&
 217                   __git_ps1 "{\[\033[0;40;36m\]%s\[\033[0;90m\]}")'
 218         export GIT_PS1_SHOWDIRTYSTATE=1
 219     fi
 220     PS1="\[\033[0;90m\][${PS_C1}\u@\h\[\033[0m\]\[\033[0;90m\]:${PS_C2}\w\[\033[0;90m\]]${PS_GIT}${PS_P}\[\033[0m\] "
 221     PS2="> "
 222 }
 223
 224 # ---------------------------------------------------------------------------
 225 # ALIASES
 226 # ---------------------------------------------------------------------------
 227
 228 # 'ls' helpers
 229 alias ll="ls -l"
 230 alias l.="ls -d .*"
 231 alias ll.="ls -ld .*"
 232 alias lla="ls -la"
 233
 234 # use 'git diff --no-index' as a prettier 'diff' alternative (if available)
 235 test -n "$(type -P git)" && alias diff="git diff --no-index"
 236
 237 # alias 'vi' to 'vim' if Vim is installed
 238 test -n "$(type -P vim)" && alias vi='vim'
 239
 240 # alias csh-style "rebash" to bash equivalent
 241 alias rehash="hash -r"
 242
 243 # svn-wrapper
 244 alias svn=svn-wrapper
 245
 246 if [ "$UNAME" = SunOS ]; then
 247     # Solaris: use GNU versions of coreutils
 248     test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep"
 249     test -x /usr/gnu/bin/sed  && alias sed="/usr/gnu/bin/sed"
 250     test -x /usr/gnu/bin/awk  && alias awk="/usr/gnu/bin/awk"
 251 fi
 252
 253 # ---------------------------------------------------------------------------
 254 # BASH COMPLETION
 255 # ---------------------------------------------------------------------------
 256
 257 test -z "$BASH_COMPLETION" && {
 258     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 259     test -n "$PS1" && test $bmajor -gt 1 && {
 260         # search for a bash_completion file to source
 261         for f in /usr/local/etc/bash_completion \
 262                  /usr/pkg/etc/bash_completion \
 263                  /opt/local/etc/bash_completion \
 264                  /etc/bash_completion \
 265                  /etc/bash/bash_completion
 266         do
 267             test -f $f && {
 268                 . $f
 269                 break
 270             }
 271         done
 272     }
 273     unset bash bmajor bminor
 274 }
 275
 276 # restore some key environment variables which may have been unset
 277 # by bash_completion script
 278 : ${HOME=~}
 279 : ${LOGNAME=$(id -un)}
 280 : ${UNAME=$(uname)}
 281
 282 # override and disable tilde expansion
 283 _expand() {
 284     return 0
 285 }
 286
 287 # ---------------------------------------------------------------------------
 288 # LS AND DIRCOLORS
 289 # ---------------------------------------------------------------------------
 290
 291 # we always pass these to ls(1)
 292 LS_COMMON="-p"
 293
 294 # if the dircolors utility is available, set that up for ls
 295 dircolors="$(type -P gdircolors dircolors | head -1)"
 296 test -n "$dircolors" && {
 297     COLORS=/etc/DIR_COLORS
 298     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 299     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 300     test ! -e "$COLORS"               && COLORS=
 301     eval `$dircolors --sh $COLORS`
 302 }
 303 unset dircolors
 304
 305 # enable color ls output if available
 306 test -n "$COLORS" &&
 307     LS_COMMON="--color=auto $LS_COMMON"
 308
 309 # setup the main ls alias if we've established common args
 310 test -n "$LS_COMMON" &&
 311     alias ls="command ls $LS_COMMON"
 312
 313 # setup color grep output if available
 314 if [ -n "$COLORS" ]; then
 315     case "$UNAME" in
 316         "SunOS")
 317             test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep --color=always"
 318             test -x /opt/local/bin/grep && alias grep="/opt/local/bin/grep --color=always"
 319             ;;
 320         *)
 321             alias grep="command grep --color=always"
 322             ;;
 323     esac
 324     # older versions of grep only support a singular highlight color
 325     export GREP_COLOR='1;32'
 326     # newer versions of grep have more flexible color configuration
 327     export GREP_COLORS='fn=36:ln=33:ms=1;32'
 328 fi
 329
 330 # ---------------------------------------------------------------------------
 331 # MISC FUNCTIONS
 332 # ---------------------------------------------------------------------------
 333
 334 # set 'screen' window title
 335 settitle_screen() {
 336     printf "\033k%s\033\\" "$@"
 337 }
 338 # set 'xterm' window title
 339 settitle_window() {
 340     printf "\033]0;%s\007" "$@"
 341 }
 342
 343 # push SSH public key to another box
 344 push_ssh_cert() {
 345     local _host
 346     test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096
 347     for _host in "$@";
 348     do
 349         echo $_host
 350         ssh $_host 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub
 351     done
 352 }
 353
 354 # ---------------------------------------------------------------------------
 355 # PATH MANIPULATION FUNCTIONS
 356 # ---------------------------------------------------------------------------
 357
 358 # Usage: pls [<var>]
 359 # List path entries of PATH or environment variable <var>.
 360 pls () { eval echo \$${1:-PATH} | tr ':' '\n'; }
 361
 362 # Usage: ppop [-n <num>] [<var>]
 363 # Pop <num> entries off the end of PATH or environment variable <var>.
 364 ppop () {
 365     local n=1
 366     [ "$1" = "-n" ] && { n=$2; shift 2; }
 367     local i=0 var=${1:-PATH}
 368     local list=$(eval echo \$$var)
 369     while [ $i -lt $n ]; do
 370         list=${list%:*}
 371         i=$(( i + 1 ))
 372     done
 373     eval "$var='$list'"
 374 }
 375
 376 # Usage: ppush <path> [<var>]
 377 # Push an entry onto the end of PATH or enviroment variable <var>.
 378 ppush () {
 379     local var=${2:-PATH}
 380     local list=$(eval echo \$$var)
 381     local i=0 dir=""
 382     IFS=':' read -a dirs <<< "$1"
 383     for ((i=0; i<${#dirs[@]}; i++)); do
 384         dir=$(eval echo "${dirs[$i]}")
 385         [ ! -d "$dir" ] && continue
 386         [ -n "$list" ] && list="$list:$dir" || list="$dir"
 387     done
 388     eval "$var='$list'"
 389 }
 390
 391 # Usage: pinsert <path> [<var>]
 392 # Push an entry onto the start of PATH or enviroment variable <var>.
 393 pinsert () {
 394     local var=${2:-PATH}
 395     local list=$(eval echo \$$var)
 396     local i=0 dir=""
 397     IFS=':' read -a dirs <<< "${1}"
 398     for ((i=${#dirs[@]}-1; i>=0; i--)); do
 399         dir=$(eval echo "${dirs[$i]}")
 400         [ ! -d "$dir" ] && continue
 401         [ -n "$list" ] && list="$dir:$list" || list="$dir"
 402     done
 403     eval "$var='$list'"
 404 }
 405
 406 # Usage: prm <path> [<var>]
 407 # Remove <path> from PATH or environment variable <var>.
 408 prm () { eval "${2:-PATH}='$(pls $2 | grep -v "^$1\$" | tr '\n' ':')'"; }
 409
 410 # Usage: puniq [<pathlist>]
 411 # Remove duplicate entries from a PATH style value while retaining
 412 # the original order. Use PATH if no <path> is given.
 413 #
 414 # Example:
 415 #   $ puniq /usr/bin:/usr/local/bin:/usr/bin
 416 #   /usr/bin:/usr/local/bin
 417 puniq () { echo "$1" | tr ':' '\n' | grep -v "^$" | nl | sort -u -k 2,2 | sort -n | cut -f 2- | paste -s -d ':'; }
 418
 419 # ---------------------------------------------------------------------------
 420 # USER SHELL ENVIRONMENT
 421 # ---------------------------------------------------------------------------
 422
 423 # source ~/.shenv now if it exists
 424 test -r ~/.shenv &&
 425     . ~/.shenv
 426
 427 # condense PATH entries
 428 PATH=$(puniq "$PATH")
 429 MANPATH=$(puniq "$MANPATH")
 430
 431 # use the color prompt by default when interactive
 432 test -n "$PS1" &&
 433     prompt_color
 434
 435 # fzf
 436 export FZF_DEFAULT_COMMAND='rg --files --no-ignore --hidden --follow -g "!{.git,node_modules,*.swp,.venv}/*" 2> /dev/null'
 437 export FZF_DEFAULT_OPTS='--bind J:down,K:up --reverse --ansi --multi'
 438
 439 # ---------------------------------------------------------------------------
 440 # MOTD / FORTUNE
 441 # ---------------------------------------------------------------------------
 442
 443 test -n "$INTERACTIVE" -a -n "$LOGIN" && {
 444     # get current uname and uptime (if exists on this host)
 445     # strip any leading whitespace from uname and uptime commands
 446     t_uname="$(test -n "`type -P uname`" && uname -npsr | sed -e 's/^\s+//')"
 447     t_uptime="$(test -n "`type -P uptime`" && uptime | sed -e 's/^\s+//')"
 448     if [ -n "$t_uname" ] || [ -n "$t_uptime" ]; then
 449         echo " --"
 450         test -n "$t_uname" && echo $t_uname
 451         test -n "$t_uptime" && echo $t_uptime
 452         echo " --"
 453     fi
 454     unset t_uname t_uptime
 455 }
 456
 457 # vim: ts=4 sts=4 shiftwidth=4 expandtab
 458 # vim: foldmethod=expr foldexpr=autofolds#foldexpr(v\:lnum,'sh') foldtext=autofolds#foldtext() foldlevel=2