.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 "$PS1" ] && return
  13
  14 # the basics
  15 PATH="/usr/local/bin:/bin:/usr/bin:/usr/sbin:/usr/local/sbin:/sbin:$PATH"
  16 : ${HOME=~}
  17 : ${LOGNAME=$(id -un)}
  18 : ${UNAME=$(uname)}
  19 # strip OS type and version under Cygwin (e.g. CYGWIN_NT-5.1 => Cygwin)
  20 UNAME=${UNAME/CYGWIN_*/Cygwin}
  21
  22 # complete hostnames from this file
  23 HOSTFILE=~/.ssh/known_hosts
  24
  25 # readline config
  26 INPUTRC=~/.inputrc
  27
  28 # if current $TERM isn't valid, fall-back to TERM=xterm-color or TERM=xterm
  29 case $(tput colors 2>&1) in
  30     tput* )
  31         export TERM=xterm-color
  32         case $(tput colors 2>&1) in
  33             tput* )
  34                 export TERM=xterm
  35                 ;;
  36         esac
  37         ;;
  38 esac
  39
  40 # ---------------------------------------------------------------------------
  41 #  SHELL OPTIONS
  42 # ---------------------------------------------------------------------------
  43
  44 # notify of bg job completion immediately
  45 set -o notify
  46
  47 # shell opts. see bash(1) for details
  48 shopt -s cdspell >/dev/null 2>&1
  49 shopt -s checkjobs >/dev/null 2>&1
  50 shopt -s checkwinsize >/dev/null 2>&1
  51 shopt -s extglob >/dev/null 2>&1
  52 shopt -s histappend >/dev/null 2>&1
  53 shopt -s hostcomplete >/dev/null 2>&1
  54 shopt -s interactive_comments >/dev/null 2>&1
  55 shopt -u mailwarn >/dev/null 2>&1
  56 shopt -s no_empty_cmd_completion >/dev/null 2>&1
  57
  58 # don't check for new mail
  59 unset MAILCHECK
  60
  61 # disable core dumps
  62 ulimit -S -c 0
  63
  64 # default umask
  65 umask 0022
  66
  67 # ---------------------------------------------------------------------------
  68 # PATH
  69 # ---------------------------------------------------------------------------
  70
  71 # make sure $MANPATH has some sane defaults
  72 MANPATH="/usr/share/man:/usr/local/share/man:$MANPATH"
  73
  74 # include the various sbin's along with /usr/local/bin
  75 PATH="$PATH:/usr/local/sbin:/usr/sbin:/sbin"
  76 PATH="/usr/local/bin:$PATH"
  77
  78 # use $HOME specific bin and sbin
  79 path_start="$path_start:$HOME/bin"
  80 test -d "$HOME/sbin" && path_start="$path_start:$HOME/sbin"
  81
  82 # macOS homebrew: include non-prefixed coreutils
  83 if [ -d "/usr/local/opt/coreutils/libexec" ]; then
  84     path_start="$path_start:/usr/local/opt/coreutils/libexec/gnubin"
  85     manpath_start="$manpath_start:/usr/local/opt/coreutils/libexec/gnuman"
  86 fi
  87
  88 # SmartOS: local pkgin binaries
  89 if [ -d "/opt/local" ]; then
  90     path_start="$path_start:/opt/local/sbin:/opt/local/bin"
  91     manpath_start="$manpath_start:/opt/local/man"
  92 fi
  93 # SmartOS: local custom scripts
  94 if [ -d "/opt/custom" ]; then
  95     path_start="$path_start:/opt/custom/sbin:/opt/custom/bin"
  96     manpath_start="$manpath_start:/opt/custom/man"
  97 fi
  98 # SmartOS: SDC
  99 if [ -d "/smartdc" ]; then
 100     path_start="$path_start:/smartdc/bin:/opt/smartdc/bin:/opt/smartdc/agents/bin"
 101     manpath_start="$manpath_start:/smartdc/man"
 102 fi
 103 # SmartOS: native binaries, for OS/LX zones
 104 if [ -d "/native" ]; then
 105     path_end="$path_end:/native/usr/sbin:/native/usr/bin:/native/sbin:/native/bin"
 106     manpath_end="$manpath_end:/native/usr/share/man"
 107 fi
 108
 109 # python pip --user
 110 for python in "python" "python2" "python3"; do
 111     if [ -n "$(type -P $python)" ]; then
 112         pybin="$($python -m site --user-base)/bin"
 113         test -d "$pybin" && path_end="$path_end:$pybin"
 114     fi
 115 done
 116 unset python pybin
 117
 118 PATH="$path_start:$PATH:$path_end"
 119 MANPATH="$manpath_start:$MANPATH:$manpath_end"
 120 unset path_start path_end manpath_start manpath_end
 121
 122 # ---------------------------------------------------------------------------
 123 # ENVIRONMENT CONFIGURATION
 124 # ---------------------------------------------------------------------------
 125
 126 # detect interactive shell
 127 case "$-" in
 128     *i*) INTERACTIVE=yes ;;
 129     *)   unset INTERACTIVE ;;
 130 esac
 131
 132 # detect login shell
 133 case "$0" in
 134    -*) LOGIN=yes ;;
 135    *)  unset LOGIN ;;
 136 esac
 137
 138 # setup locale. Try to enable en_US locale w/ utf-8 encodings
 139 # (if not already configured), but do graceful fall-back.
 140 lclist=$(locale -a | grep en_US)
 141 if test -n "$(echo $lclist | grep UTF-8)"; then
 142     : ${LANG:="en_US.UTF-8"}
 143     : ${LANGUAGE:="en"}
 144     : ${LC_CTYPE:="en_US.UTF-8"}
 145     : ${LC_ALL:="en_US.UTF-8"}
 146 elif test -n "$(echo $lclist | grep utf8)"; then
 147     : ${LANG:="en_US.utf8"}
 148     : ${LANGUAGE:="en"}
 149     : ${LC_CTYPE:="en_US.utf8"}
 150     : ${LC_ALL:="en_US.utf8"}
 151 elif test -n "$(echo $lclist | grep ISO8859-1)"; then
 152     : ${LANG:="en_US.ISO8859-1"}
 153     : ${LANGUAGE:="en"}
 154     : ${LC_CTYPE:="en_US.ISO8859-1"}
 155     : ${LC_ALL:="en_US.ISO8859-1"}
 156 else
 157     : ${LANG:="en_US"}
 158     : ${LANGUAGE:="en"}
 159     : ${LC_CTYPE:="en_US"}
 160     : ${LC_ALL:="en_US"}
 161 fi
 162 export LANG LANGUAGE LC_CTYPE LC_ALL
 163 unset lclist
 164
 165 # ignore backups, CVS directories, python bytecode, vim swap files
 166 FIGNORE="~:CVS:#:.pyc:.swp:.swa:apache-solr-*"
 167
 168 # history stuff
 169 HISTCONTROL=ignoreboth
 170 HISTFILESIZE=10000
 171 HISTSIZE=10000
 172
 173 # ---------------------------------------------------------------------------
 174 # PAGER / EDITOR
 175 # ---------------------------------------------------------------------------
 176
 177 # see what we have to work with ...
 178 HAVE_VIM=$(command -v vim)
 179
 180 # EDITOR
 181 test -n "$HAVE_VIM" &&
 182     EDITOR=vim ||
 183     EDITOR=vi
 184 export EDITOR
 185
 186 # PAGER
 187 if test -n "$(command -v less)" ; then
 188     PAGER="less"
 189     MANPAGER="less"
 190     LESS="-FiRX"
 191     export LESS
 192 else
 193     PAGER=more
 194     MANPAGER="$PAGER"
 195 fi
 196 export PAGER MANPAGER
 197
 198 # ---------------------------------------------------------------------------
 199 # PROMPT
 200 # ---------------------------------------------------------------------------
 201
 202 # http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 203
 204 if [ "$UID" = 0 ]; then
 205     # root
 206     PS_C1="\[\033[1;31m\]"  # red
 207     PS_C2="\[\033[0;37m\]"  # grey
 208     PS_P="#"
 209 else
 210     case "$UNAME" in
 211         Cygwin)
 212             PS_C1="\[\033[0;32m\]"  # green
 213             PS_C2="\[\033[0;37m\]"  # grey
 214             ;;
 215         Darwin)
 216             PS_C1="\[\033[1;97m\]"  # white
 217             PS_C2="\[\033[0;37m\]"  # grey
 218             ;;
 219         SunOS | AIX)
 220             PS_C1="\[\033[1;96m\]"  # cyan
 221             PS_C2="\[\033[0;36m\]"  # cyan
 222             ;;
 223         *)
 224             PS_C1="\[\033[1;93m\]"  # yellow
 225             PS_C2="\[\033[0;33m\]"  # brown
 226     esac
 227     PS_P="\$"
 228 fi
 229
 230 prompt_simple() {
 231     unset PROMPT_COMMAND
 232     PS1="[\u@\h:\w]\$ "
 233     PS2="> "
 234 }
 235
 236 prompt_compact() {
 237     unset PROMPT_COMMAND
 238     PS1="${PS_C1}${PS_P}\[\033[0m\] "
 239     PS2="> "
 240 }
 241
 242 prompt_color() {
 243     # if git and the git bash_completion scripts are installed, use __git_ps1()
 244     # to show current branch info.
 245     # - never show branch info for $HOME (dotfiles) repo.
 246     # - optionally hide branch info for git repo's with `bash.hidePrompt`
 247     #   config flag set. use the following to exclude a given repo:
 248     #     `git config --local --bool --add bash.hidePrompt true`
 249     if [ -n "$(type -P git)" -a "$(type -t __git_ps1)" = "function" ]; then
 250         home_canonical="$(test -n "$(type -P realpath)" && realpath $HOME || echo $HOME)"
 251         PS_GIT='$(test -n "$(__git_ps1 %s)" &&
 252                   test "$(git rev-parse --show-toplevel)" != "$home_canonical" &&
 253                   test "$(git config --bool bash.hidePrompt)" != "true" &&
 254                   __git_ps1 "{\[\033[0;40;36m\]%s\[\033[0;90m\]}")'
 255         export GIT_PS1_SHOWDIRTYSTATE=1
 256     fi
 257     PS1="\[\033[0;90m\][${PS_C1}\u@\h\[\033[0m\]\[\033[0;90m\]:${PS_C2}\w\[\033[0;90m\]]${PS_GIT}${PS_P}\[\033[0m\] "
 258     PS2="> "
 259 }
 260
 261 # ----------------------------------------------------------------------
 262 # SOLARIS SPECIFIC
 263 # ----------------------------------------------------------------------
 264
 265 if [ "$UNAME" = SunOS ]; then
 266     # use GNU versions of core utils
 267     test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep"
 268     test -x /usr/gnu/bin/sed  && alias sed="/usr/gnu/bin/sed"
 269     test -x /usr/gnu/bin/awk  && alias awk="/usr/gnu/bin/awk"
 270     test -x /usr/xpg4/bin/sed  && alias sed="/usr/xpg4/bin/sed"
 271     test -x /usr/xpg4/bin/awk  && alias awk="/usr/xpg4/bin/awk"
 272 fi
 273
 274 # ---------------------------------------------------------------------------
 275 # ALIASES
 276 # ---------------------------------------------------------------------------
 277
 278 # 'ls' helpers
 279 alias ll="ls -l"
 280 alias l.="ls -d .*"
 281 alias ll.="ls -ld .*"
 282 alias lla="ls -la"
 283
 284 # use 'git diff --no-index' as a prettier 'diff' alternative (if available)
 285 test -n "$(type -P git)" && alias diff="git diff --no-index"
 286
 287 # alias 'vi' to 'vim' if Vim is installed
 288 test -n "$(type -P vim)" && alias vi='vim'
 289
 290 # alias csh-style "rebash" to bash equivalent
 291 alias rehash="hash -r"
 292
 293 # svn-wrapper
 294 alias svn=svn-wrapper
 295
 296 if [ "$UNAME" = SunOS ]; then
 297     # Solaris: use GNU versions of coreutils
 298     test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep"
 299     test -x /usr/gnu/bin/sed  && alias sed="/usr/gnu/bin/sed"
 300     test -x /usr/gnu/bin/awk  && alias awk="/usr/gnu/bin/awk"
 301 fi
 302
 303 # ---------------------------------------------------------------------------
 304 # BASH COMPLETION
 305 # ---------------------------------------------------------------------------
 306
 307 test -z "$BASH_COMPLETION" && {
 308     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 309     test -n "$PS1" && test $bmajor -gt 1 && {
 310         # search for a bash_completion file to source
 311         for f in /usr/local/etc/bash_completion \
 312                  /usr/pkg/etc/bash_completion \
 313                  /opt/local/etc/bash_completion \
 314                  /etc/bash_completion \
 315                  /etc/bash/bash_completion
 316         do
 317             test -f $f && {
 318                 . $f
 319                 break
 320             }
 321         done
 322     }
 323     unset bash bmajor bminor
 324 }
 325
 326 # restore some key environment variables which may have been unset
 327 # by bash_completion script
 328 : ${HOME=~}
 329 : ${LOGNAME=$(id -un)}
 330 : ${UNAME=$(uname)}
 331
 332 # override and disable tilde expansion
 333 _expand() {
 334     return 0
 335 }
 336
 337 # ---------------------------------------------------------------------------
 338 # LS AND DIRCOLORS
 339 # ---------------------------------------------------------------------------
 340
 341 # we always pass these to ls(1)
 342 LS_COMMON="-p"
 343
 344 # if the dircolors utility is available, set that up for ls
 345 dircolors="$(type -P gdircolors dircolors | head -1)"
 346 test -n "$dircolors" && {
 347     COLORS=/etc/DIR_COLORS
 348     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 349     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 350     test ! -e "$COLORS"               && COLORS=
 351     # AIX (vx-track) has dircolors(1) but ls(1) doesn't support --color arg
 352     test "$UNAME" = "AIX"             && COLORS=
 353     eval `$dircolors --sh $COLORS`
 354 }
 355 unset dircolors
 356
 357 # enable color ls output if available
 358 test -n "$COLORS" &&
 359     LS_COMMON="--color=auto $LS_COMMON"
 360
 361 # setup the main ls alias if we've established common args
 362 test -n "$LS_COMMON" &&
 363     alias ls="command ls $LS_COMMON"
 364
 365 # setup color grep output if available
 366 if [ -n "$COLORS" ]; then
 367     case "$UNAME" in
 368         "SunOS")
 369             test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep --color=always"
 370             test -x /opt/local/bin/grep && alias grep="/opt/local/bin/grep --color=always"
 371             ;;
 372         *)
 373             alias grep="command grep --color=always"
 374             ;;
 375     esac
 376     # older versions of grep only support a singular highlight color
 377     export GREP_COLOR='1;32'
 378     # newer versions of grep have more flexible color configuration
 379     export GREP_COLORS='fn=36:ln=33:ms=1;32'
 380 fi
 381
 382 # ---------------------------------------------------------------------------
 383 # MISC FUNCTIONS
 384 # ---------------------------------------------------------------------------
 385
 386 # set 'screen' window title
 387 settitle_screen() {
 388     printf "\033k%s\033\\" "$@"
 389 }
 390 # set 'xterm' window title
 391 settitle_window() {
 392     printf "\033]0;%s\007" "$@"
 393 }
 394
 395 # push SSH public key to another box
 396 push_ssh_cert() {
 397     local _host
 398     test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096
 399     for _host in "$@";
 400     do
 401         echo $_host
 402         ssh $_host 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub
 403     done
 404 }
 405
 406 # ---------------------------------------------------------------------------
 407 # PATH MANIPULATION FUNCTIONS
 408 # ---------------------------------------------------------------------------
 409
 410 # Usage: pls [<var>]
 411 # List path entries of PATH or environment variable <var>.
 412 pls () { eval echo \$${1:-PATH} | tr ':' '\n'; }
 413
 414 # Usage: ppop [-n <num>] [<var>]
 415 # Pop <num> entries off the end of PATH or environment variable <var>.
 416 ppop () {
 417     local n=1
 418     [ "$1" = "-n" ] && { n=$2; shift 2; }
 419     local i=0 var=${1:-PATH}
 420     local list=$(eval echo \$$var)
 421     while [ $i -lt $n ]; do
 422         list=${list%:*}
 423         i=$(( i + 1 ))
 424     done
 425     eval "$var='$list'"
 426 }
 427
 428 # Usage: ppush <path> [<var>]
 429 # Push an entry onto the end of PATH or enviroment variable <var>.
 430 ppush () {
 431     local var=${2:-PATH}
 432     local list=$(eval echo \$$var)
 433     local i=0 dir=""
 434     IFS=':' read -a dirs <<< "$1"
 435     for ((i=0; i<${#dirs[@]}; i++)); do
 436         dir=$(eval echo "${dirs[$i]}")
 437         [ ! -d "$dir" ] && continue
 438         [ -n "$list" ] && list="$list:$dir" || list="$dir"
 439     done
 440     eval "$var='$list'"
 441 }
 442
 443 # Usage: pinsert <path> [<var>]
 444 # Push an entry onto the start of PATH or enviroment variable <var>.
 445 pinsert () {
 446     local var=${2:-PATH}
 447     local list=$(eval echo \$$var)
 448     local i=0 dir=""
 449     IFS=':' read -a dirs <<< "${1}"
 450     for ((i=${#dirs[@]}-1; i>=0; i--)); do
 451         dir=$(eval echo "${dirs[$i]}")
 452         [ ! -d "$dir" ] && continue
 453         [ -n "$list" ] && list="$dir:$list" || list="$dir"
 454     done
 455     eval "$var='$list'"
 456 }
 457
 458 # Usage: prm <path> [<var>]
 459 # Remove <path> from PATH or environment variable <var>.
 460 prm () { eval "${2:-PATH}='$(pls $2 | grep -v "^$1\$" | tr '\n' ':')'"; }
 461
 462 # Usage: puniq [<pathlist>]
 463 # Remove duplicate entries from a PATH style value while retaining
 464 # the original order. Use PATH if no <path> is given.
 465 #
 466 # Example:
 467 #   $ puniq /usr/bin:/usr/local/bin:/usr/bin
 468 #   /usr/bin:/usr/local/bin
 469 puniq () { echo "$1" | tr ':' '\n' | grep -v "^$" | nl | sort -u -k 2,2 | sort -n | cut -f 2- | paste -s -d ':' -; }
 470
 471 # ---------------------------------------------------------------------------
 472 # USER SHELL ENVIRONMENT
 473 # ---------------------------------------------------------------------------
 474
 475 # source ~/.shenv now if it exists
 476 test -r ~/.shenv &&
 477     . ~/.shenv
 478
 479 # condense PATH entries
 480 PATH=$(puniq "$PATH")
 481 MANPATH=$(puniq "$MANPATH")
 482
 483 # use the color prompt by default when interactive
 484 test -n "$PS1" &&
 485     prompt_color
 486
 487 # fzf
 488 export FZF_DEFAULT_COMMAND='rg --files --no-ignore --hidden --follow -g "!{.git,node_modules,*.swp,.venv}/*" 2> /dev/null'
 489 export FZF_DEFAULT_OPTS='--bind J:down,K:up --reverse --ansi --multi'
 490
 491 # ---------------------------------------------------------------------------
 492 # MOTD / FORTUNE
 493 # ---------------------------------------------------------------------------
 494
 495 test -n "$INTERACTIVE" -a -n "$LOGIN" && {
 496     # get current uname and uptime (if exists on this host)
 497     # strip any leading whitespace from uname and uptime commands
 498     t_uname="$(test -n "`type -P uname`" && uname -npsr | sed -e 's/^\s+//')"
 499     t_uptime="$(test -n "`type -P uptime`" && uptime | sed -e 's/^\s+//')"
 500     if [ -n "$t_uname" ] || [ -n "$t_uptime" ]; then
 501         echo " --"
 502         test -n "$t_uname" && echo $t_uname
 503         test -n "$t_uptime" && echo $t_uptime
 504         echo " --"
 505     fi
 506     unset t_uname t_uptime
 507 }
 508
 509 # vim: ts=4 sts=4 shiftwidth=4 expandtab