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