.bashrc

   1 #!/bin/bash
   2 # ~/.bashrc: executed by bash(1) for non-login shells.
   3 # A basically sane bash environment.
   4 # Tony Duckles <http://nynim.org/about/> (based on http://github.com/rtomayko/dotfiles)
   5
   6 # short-circuit for non-interactive sessions
   7 [ -z "$PS1" ] && return
   8
   9 # the basics
  10 PATH="/usr/local/bin:/bin:/usr/bin:/usr/sbin:/usr/local/sbin:/sbin:$PATH"
  11 : ${HOME=~}
  12 : ${LOGNAME=$(id -un)}
  13 : ${UNAME=$(uname)}
  14 # strip OS type and version under Cygwin (e.g. CYGWIN_NT-5.1 => Cygwin)
  15 UNAME=${UNAME/CYGWIN_*/Cygwin}
  16
  17 # complete hostnames from this file
  18 HOSTFILE=~/.ssh/known_hosts
  19
  20 # readline config
  21 INPUTRC=~/.inputrc
  22
  23 # if current $TERM isn't valid, fall-back to TERM=xterm-color or TERM=xterm
  24 case $(tput colors 2>&1) in
  25     tput* )
  26         export TERM=xterm-color
  27         case $(tput colors 2>&1) in
  28             tput* )
  29                 export TERM=xterm
  30                 ;;
  31         esac
  32         ;;
  33 esac
  34
  35 # ----------------------------------------------------------------------
  36 #  SHELL OPTIONS
  37 # ----------------------------------------------------------------------
  38
  39 # bring in system bashrc
  40 test -r /etc/bashrc &&
  41     . /etc/bashrc
  42
  43 # notify of bg job completion immediately
  44 set -o notify
  45
  46 # shell opts. see bash(1) for details
  47 shopt -s cdspell >/dev/null 2>&1
  48 shopt -s extglob >/dev/null 2>&1
  49 shopt -s histappend >/dev/null 2>&1
  50 shopt -s hostcomplete >/dev/null 2>&1
  51 shopt -s interactive_comments >/dev/null 2>&1
  52 shopt -u mailwarn >/dev/null 2>&1
  53 shopt -s no_empty_cmd_completion >/dev/null 2>&1
  54
  55 # don't check for new mail
  56 unset MAILCHECK
  57
  58 # disable core dumps
  59 ulimit -S -c 0
  60
  61 # default umask
  62 umask 0022
  63
  64 # ----------------------------------------------------------------------
  65 # PATH
  66 # ----------------------------------------------------------------------
  67
  68 # we want the various sbin's on the path along with /usr/local/bin
  69 PATH="$PATH:/usr/local/sbin:/usr/sbin:/sbin"
  70 PATH="/usr/local/bin:$PATH"
  71
  72 # put /opt/csw/* on PATH if exists (OpenCSW Solaris packages)
  73 test -d "/opt/csw" &&
  74     PATH="/opt/csw/sbin:/opt/csw/bin:$PATH"
  75
  76 # ~/.rvm/bin on PATH if exists (RVM)
  77 test -d "$HOME/.rvm/bin" &&
  78     PATH="$PATH:$HOME/.rvm/bin"
  79
  80 # put ~/bin on PATH if exists
  81 test -d "$HOME/bin" &&
  82     PATH="$HOME/bin:$PATH"
  83
  84 # put ~/sbin on PATH if exists
  85 test -d "$HOME/sbin" &&
  86     PATH="$HOME/sbin:$PATH"
  87
  88 # ----------------------------------------------------------------------
  89 # ENVIRONMENT CONFIGURATION
  90 # ----------------------------------------------------------------------
  91
  92 # detect interactive shell
  93 case "$-" in
  94     *i*) INTERACTIVE=yes ;;
  95     *)   unset INTERACTIVE ;;
  96 esac
  97
  98 # detect login shell
  99 case "$0" in
 100    -*) LOGIN=yes ;;
 101    *)  unset LOGIN ;;
 102 esac
 103
 104 # setup locale. Try to enable en_US locale w/ utf-8 encodings
 105 # (if not already configured), but do graceful fall-back.
 106 lclist=$(locale -a | grep en_US)
 107 if test -n "$(echo $lclist | grep UTF-8)"; then
 108     : ${LANG:="en_US.UTF-8"}
 109     : ${LANGUAGE:="en"}
 110     : ${LC_CTYPE:="en_US.UTF-8"}
 111     : ${LC_ALL:="en_US.UTF-8"}
 112 elif test -n "$(echo $lclist | grep utf8)"; then
 113     : ${LANG:="en_US.utf8"}
 114     : ${LANGUAGE:="en"}
 115     : ${LC_CTYPE:="en_US.utf8"}
 116     : ${LC_ALL:="en_US.utf8"}
 117 elif test -n "$(echo $lclist | grep ISO8859-1)"; then
 118     : ${LANG:="en_US.ISO8859-1"}
 119     : ${LANGUAGE:="en"}
 120     : ${LC_CTYPE:="en_US.ISO8859-1"}
 121     : ${LC_ALL:="en_US.ISO8859-1"}
 122 else
 123     : ${LANG:="en_US"}
 124     : ${LANGUAGE:="en"}
 125     : ${LC_CTYPE:="en_US"}
 126     : ${LC_ALL:="en_US"}
 127 fi
 128 export LANG LANGUAGE LC_CTYPE LC_ALL
 129 unset lclist
 130
 131 # ignore backups, CVS directories, python bytecode, vim swap files
 132 FIGNORE="~:CVS:#:.pyc:.swp:.swa:apache-solr-*"
 133
 134 # history stuff
 135 HISTCONTROL=ignoreboth
 136 HISTFILESIZE=10000
 137 HISTSIZE=10000
 138
 139 # ----------------------------------------------------------------------
 140 # PAGER / EDITOR
 141 # ----------------------------------------------------------------------
 142
 143 # see what we have to work with ...
 144 HAVE_VIM=$(command -v vim)
 145
 146 # EDITOR
 147 test -n "$HAVE_VIM" &&
 148     EDITOR=vim ||
 149     EDITOR=vi
 150 export EDITOR
 151
 152 # PAGER
 153 if test -n "$(command -v less)" ; then
 154     PAGER="less"
 155     MANPAGER="less"
 156     LESS="-FiRX"
 157     export LESS
 158 else
 159     PAGER=more
 160     MANPAGER="$PAGER"
 161 fi
 162 export PAGER MANPAGER
 163
 164 # ----------------------------------------------------------------------
 165 # PROMPT
 166 # ----------------------------------------------------------------------
 167
 168 # http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 169
 170 if [ "$UID" = 0 ]; then
 171     # root
 172     PS_C1="\[\033[1;31m\]"  # red
 173     PS_C2="\[\033[0;37m\]"  # grey
 174     PS_P="#"
 175 else
 176     case "$UNAME" in
 177         Cygwin)
 178             PS_C1="\[\033[0;32m\]"  # green
 179             PS_C2="\[\033[0;37m\]"  # grey
 180             ;;
 181         Darwin)
 182             PS_C1="\[\033[1;97m\]"  # white
 183             PS_C2="\[\033[0;37m\]"  # grey
 184             ;;
 185         SunOS | AIX)
 186             PS_C1="\[\033[1;96m\]"  # cyan
 187             PS_C2="\[\033[0;36m\]"  # cyan
 188             ;;
 189         *)
 190             PS_C1="\[\033[1;93m\]"  # yellow
 191             PS_C2="\[\033[0;33m\]"  # brown
 192     esac
 193     PS_P="\$"
 194 fi
 195
 196 prompt_simple() {
 197     unset PROMPT_COMMAND
 198     PS1="[\u@\h:\w]\$ "
 199     PS2="> "
 200 }
 201
 202 prompt_compact() {
 203     unset PROMPT_COMMAND
 204     PS1="${PS_C1}${PS_P}\[\033[0m\] "
 205     PS2="> "
 206 }
 207
 208 prompt_color() {
 209     # if git and the git bash_completion scripts are installed, use __git_ps1() to show current branch info.
 210     # never show branch info for $HOME (dotfiles) repo.
 211     # use the following to exclude a given repo: `git config --local --bool --add bash.hidePrompt true`
 212     if [ -n "$(type -P git)" -a "$(type -t __git_ps1)" = "function" ]; then
 213         PS_GIT='$(test -n "$(__git_ps1 %s)" &&
 214                   test "$(git rev-parse --show-toplevel)" != "$HOME" &&
 215                   test "$(git config --bool bash.hidePrompt)" != "true" &&
 216                   __git_ps1 "{\[\033[0;40;36m\]%s\[\033[0;90m\]}")'
 217         export GIT_PS1_SHOWDIRTYSTATE=1
 218     fi
 219     PS1="\[\033[0;90m\][${PS_C1}\u@\h\[\033[0m\]\[\033[0;90m\]:${PS_C2}\w\[\033[0;90m\]]${PS_GIT}${PS_P}\[\033[0m\] "
 220     PS2="> "
 221 }
 222
 223 # ----------------------------------------------------------------------
 224 # MACOS X / DARWIN SPECIFIC
 225 # ----------------------------------------------------------------------
 226
 227 if [ "$UNAME" = Darwin ]; then
 228     # put ports on the paths if /opt/local exists
 229     test -x /opt/local -a ! -L /opt/local && {
 230         PORTS=/opt/local
 231
 232         # setup the PATH and MANPATH
 233         PATH="$PORTS/bin:$PORTS/sbin:$PATH"
 234         MANPATH="$PORTS/share/man:$MANPATH"
 235
 236         # nice little port alias
 237         alias port="sudo nice -n +18 $PORTS/bin/port"
 238     }
 239     # put coreutils on the paths if /usr/local/opt/coreutils/libexec exists
 240     test -x /usr/local/opt/coreutils/libexec -a ! -L /usr/local/opt/coreutils/libexec && {
 241         # setup the PATH and MANPATH
 242         PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
 243         MANPATH="/usr/local/opt/coreutils/libexec/gnuman:$MANPATH"
 244     }
 245 fi
 246
 247 # ----------------------------------------------------------------------
 248 # ALIASES / FUNCTIONS
 249 # ----------------------------------------------------------------------
 250
 251 # 'ls' helpers
 252 alias ll="ls -l"
 253 alias l.="ls -d .*"
 254 alias ll.="ls -ld .*"
 255 alias lla="ls -la"
 256
 257 # use 'git diff --no-index' as a prettier 'diff' alternative (if available)
 258 test -n "$(type -P git)" && alias diff="git diff --no-index"
 259
 260 # alias 'vi' to 'vim' if Vim is installed
 261 vim="$(type -P vim)"
 262 test -n "$vim" && {
 263     alias vi='vim'
 264 }
 265 unset vim
 266
 267 # disk usage with human sizes and minimal depth
 268 alias du1='du -h --max-depth=1'
 269 alias fn='find . -name'
 270 alias hi='history | tail -20'
 271
 272 # for Solaris, use GNU versions of core utils
 273 if [ "$UNAME" = SunOS ]; then
 274     test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep"
 275     test -x /usr/gnu/bin/sed  && alias sed="/usr/gnu/bin/sed"
 276     test -x /usr/gnu/bin/awk  && alias awk="/usr/gnu/bin/awk"
 277 fi
 278
 279 # alias csh-style "rebash" to bash equivalent
 280 alias rehash="hash -r"
 281
 282 # set 'screen' window title
 283 settitle() {
 284     printf "\033k%s\033\\" "$@"
 285 }
 286
 287 # svn-wrapper
 288 alias svn=svn-wrapper
 289
 290 # ----------------------------------------------------------------------
 291 # BASH COMPLETION
 292 # ----------------------------------------------------------------------
 293
 294 test -z "$BASH_COMPLETION" && {
 295     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 296     test -n "$PS1" && test $bmajor -gt 1 && {
 297         # search for a bash_completion file to source
 298         for f in /usr/local/etc/bash_completion \
 299                  /usr/pkg/etc/bash_completion \
 300                  /opt/local/etc/bash_completion \
 301                  /etc/bash_completion
 302         do
 303             test -f $f && {
 304                 . $f
 305                 break
 306             }
 307         done
 308     }
 309     unset bash bmajor bminor
 310 }
 311
 312 # override and disable tilde expansion
 313 _expand() {
 314     return 0
 315 }
 316
 317 # ----------------------------------------------------------------------
 318 # LS AND DIRCOLORS
 319 # ----------------------------------------------------------------------
 320
 321 # we always pass these to ls(1)
 322 LS_COMMON="-p"
 323
 324 # if the dircolors utility is available, set that up for ls
 325 dircolors="$(type -P gdircolors dircolors | head -1)"
 326 test -n "$dircolors" && {
 327     COLORS=/etc/DIR_COLORS
 328     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 329     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 330     test ! -e "$COLORS"               && COLORS=
 331     # AIX (vx-track) has dircolors(1) but ls(1) doesn't support --color arg
 332     test "$UNAME" = "AIX"             && COLORS=
 333     eval `$dircolors --sh $COLORS`
 334 }
 335 unset dircolors
 336
 337 # enable color ls output if available
 338 test -n "$COLORS" &&
 339     LS_COMMON="--color=auto $LS_COMMON"
 340
 341 # setup the main ls alias if we've established common args
 342 test -n "$LS_COMMON" &&
 343     alias ls="command ls $LS_COMMON"
 344
 345 # setup color grep output if available
 346 if [ -n "$COLORS" ]; then
 347     case "$UNAME" in
 348         "SunOS")
 349             # for Solaris, use the GNU version of grep for color support
 350             test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep --color=always"
 351             ;;
 352         *)
 353             alias grep="command grep --color=always"
 354             ;;
 355     esac
 356     # older versions of grep only support a singular highlight color
 357     export GREP_COLOR='1;37;42'
 358     # newer versions of grep have more flexible color configuration
 359     export GREP_COLORS='fn=36:ln=1;33:ms=1;37;42'
 360 fi
 361
 362 # --------------------------------------------------------------------
 363 # MISC COMMANDS
 364 # --------------------------------------------------------------------
 365
 366 # push SSH public key to another box
 367 push_ssh_cert() {
 368     local _host
 369     test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096
 370     for _host in "$@";
 371     do
 372         echo $_host
 373         ssh $_host 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub
 374     done
 375 }
 376
 377 # --------------------------------------------------------------------
 378 # PATH MANIPULATION FUNCTIONS
 379 # --------------------------------------------------------------------
 380
 381 # Usage: pls [<var>]
 382 # List path entries of PATH or environment variable <var>.
 383 pls () { eval echo \$${1:-PATH} |tr : '\n'; }
 384
 385 # Usage: pshift [-n <num>] [<var>]
 386 # Shift <num> entries off the front of PATH or environment var <var>.
 387 # with the <var> option. Useful: pshift $(pwd)
 388 pshift () {
 389     local n=1
 390     [ "$1" = "-n" ] && { n=$(( $2 + 1 )); shift 2; }
 391     eval "${1:-PATH}='$(pls |tail -n +$n |tr '\n' :)'"
 392 }
 393
 394 # Usage: ppop [-n <num>] [<var>]
 395 # Pop <num> entries off the end of PATH or environment variable <var>.
 396 ppop () {
 397     local n=1 i=0
 398     [ "$1" = "-n" ] && { n=$2; shift 2; }
 399     while [ $i -lt $n ]
 400     do eval "${1:-PATH}='\${${1:-PATH}%:*}'"
 401        i=$(( i + 1 ))
 402     done
 403 }
 404
 405 # Usage: prm <path> [<var>]
 406 # Remove <path> from PATH or environment variable <var>.
 407 prm () { eval "${2:-PATH}='$(pls $2 |grep -v "^$1\$" |tr '\n' :)'"; }
 408
 409 # Usage: punshift <path> [<var>]
 410 # Shift <path> onto the beginning of PATH or environment variable <var>.
 411 punshift () { eval "${2:-PATH}='$1:$(eval echo \$${2:-PATH})'"; }
 412
 413 # Usage: ppush <path> [<var>]
 414 ppush () { eval "${2:-PATH}='$(eval echo \$${2:-PATH})':$1"; }
 415
 416 # Usage: puniq [<path>]
 417 # Remove duplicate entries from a PATH style value while retaining
 418 # the original order. Use PATH if no <path> is given.
 419 #
 420 # Example:
 421 #   $ puniq /usr/bin:/usr/local/bin:/usr/bin
 422 #   /usr/bin:/usr/local/bin
 423 puniq () {
 424     echo "$1" | tr : '\n' | nl | sort -u -k 2,2 | sort -n |
 425     cut -f 2- | tr '\n' :
 426 }
 427
 428 # -------------------------------------------------------------------
 429 # USER SHELL ENVIRONMENT
 430 # -------------------------------------------------------------------
 431
 432 # source ~/.shenv now if it exists
 433 test -r ~/.shenv &&
 434     . ~/.shenv
 435
 436 # condense PATH entries
 437 PATH=$(puniq "$PATH")
 438 MANPATH=$(puniq "$MANPATH")
 439
 440 # use the color prompt by default when interactive
 441 test -n "$PS1" &&
 442     prompt_color
 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