.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="$PAGER"
 161 fi
 162 export PAGER MANPAGER
 163
 164 # Ack
 165 ACK_PAGER="$PAGER"
 166 ACK_PAGER_COLOR="$PAGER"
 167
 168 # ----------------------------------------------------------------------
 169 # PROMPT
 170 # ----------------------------------------------------------------------
 171
 172 # http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 173
 174 if [ "$UID" = 0 ]; then
 175     # root
 176     PS_C1="\[\033[1;31m\]"  # red
 177     PS_C2="\[\033[0;37m\]"  # grey
 178     PS_P="#"
 179 else
 180     case "$UNAME" in
 181         Cygwin)
 182             PS_C1="\[\033[0;32m\]"  # green
 183             PS_C2="\[\033[0;37m\]"  # grey
 184             ;;
 185         Darwin)
 186             PS_C1="\[\033[1;97m\]"  # white
 187             PS_C2="\[\033[0;37m\]"  # grey
 188             ;;
 189         SunOS | AIX)
 190             PS_C1="\[\033[1;96m\]"  # cyan
 191             PS_C2="\[\033[0;36m\]"  # cyan
 192             ;;
 193         *)
 194             PS_C1="\[\033[1;93m\]"  # yellow
 195             PS_C2="\[\033[0;33m\]"  # brown
 196     esac
 197     PS_P="\$"
 198 fi
 199
 200 prompt_simple() {
 201     unset PROMPT_COMMAND
 202     PS1="[\u@\h:\w]\$ "
 203     PS2="> "
 204 }
 205
 206 prompt_compact() {
 207     unset PROMPT_COMMAND
 208     PS1="${PS_C1}${PS_P}\[\033[0m\] "
 209     PS2="> "
 210 }
 211
 212 prompt_color() {
 213     # If git and the git bash_completion scripts are installed, use __git_ps1() to show current branch info.
 214     # Never show branch info for $HOME (dotfiles) repo.
 215     # Use the following to exclude a given repo: `git config --local --bool --add bash.hidePrompt true`
 216     if [ -n "$(type -P git)" -a "$(type -t __git_ps1)" = "function" ]; then
 217         PS_GIT='$(test -n "$(__git_ps1 %s)" &&
 218                   test "$(git rev-parse --show-toplevel)" != "$HOME" &&
 219                   test "$(git config --bool bash.hidePrompt)" != "true" &&
 220                   __git_ps1 "{\[\033[0;100m\]%s\[\033[0;90m\]}")'
 221         export GIT_PS1_SHOWDIRTYSTATE=1
 222     fi
 223     PS1="\[\033[0;90m\][${PS_C1}\u@\h\[\033[0m\]\[\033[0;90m\]:${PS_C2}\w\[\033[0;90m\]]${PS_GIT}${PS_P}\[\033[0m\] "
 224     PS2="> "
 225 }
 226
 227 # ----------------------------------------------------------------------
 228 # MACOS X / DARWIN SPECIFIC
 229 # ----------------------------------------------------------------------
 230
 231 if [ "$UNAME" = Darwin ]; then
 232     # put ports on the paths if /opt/local exists
 233     test -x /opt/local -a ! -L /opt/local && {
 234         PORTS=/opt/local
 235
 236         # setup the PATH and MANPATH
 237         PATH="$PORTS/bin:$PORTS/sbin:$PATH"
 238         MANPATH="$PORTS/share/man:$MANPATH"
 239
 240         # nice little port alias
 241         alias port="sudo nice -n +18 $PORTS/bin/port"
 242     }
 243     # put coreutils on the paths if /usr/local/opt/coreutils/libexec exists
 244     test -x /usr/local/opt/coreutils/libexec -a ! -L /usr/local/opt/coreutils/libexec && {
 245         # setup the PATH and MANPATH
 246         PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
 247         MANPATH="/usr/local/opt/coreutils/libexec/gnuman:$MANPATH"
 248     }
 249 fi
 250
 251 # ----------------------------------------------------------------------
 252 # ALIASES / FUNCTIONS
 253 # ----------------------------------------------------------------------
 254
 255 # alias 'vi' to 'vim' if Vim is installed
 256 vim="$(type -P vim)"
 257 test -n "$vim" && {
 258     alias vi='vim'
 259 }
 260 unset vim
 261
 262 # disk usage with human sizes and minimal depth
 263 alias du1='du -h --max-depth=1'
 264 alias fn='find . -name'
 265 alias hi='history | tail -20'
 266
 267 # For Solaris, use GNU versions of core utils
 268 if [ "$UNAME" = SunOS ]; then
 269     test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep"
 270     test -x /usr/gnu/bin/sed  && alias sed="/usr/gnu/bin/sed"
 271     test -x /usr/gnu/bin/awk  && alias awk="/usr/gnu/bin/awk"
 272 fi
 273
 274 # Alias csh-style "rebash" to bash equivalent
 275 alias rehash="hash -r"
 276
 277 # set 'screen' window title
 278 settitle() {
 279     test -n "$STY" && printf "\033k%s\033\\" "$@"
 280 }
 281
 282 # ----------------------------------------------------------------------
 283 # BASH COMPLETION
 284 # ----------------------------------------------------------------------
 285
 286 test -z "$BASH_COMPLETION" && {
 287     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 288     test -n "$PS1" && test $bmajor -gt 1 && {
 289         # search for a bash_completion file to source
 290         for f in /usr/local/etc/bash_completion \
 291                  /usr/pkg/etc/bash_completion \
 292                  /opt/local/etc/bash_completion \
 293                  /etc/bash_completion
 294         do
 295             test -f $f && {
 296                 . $f
 297                 break
 298             }
 299         done
 300     }
 301     unset bash bmajor bminor
 302 }
 303
 304 # override and disable tilde expansion
 305 _expand() {
 306     return 0
 307 }
 308
 309 # ----------------------------------------------------------------------
 310 # LS AND DIRCOLORS
 311 # ----------------------------------------------------------------------
 312
 313 # we always pass these to ls(1)
 314 unset LS_COMMON
 315
 316 # if the dircolors utility is available, set that up for ls
 317 dircolors="$(type -P gdircolors dircolors | head -1)"
 318 test -n "$dircolors" && {
 319     COLORS=/etc/DIR_COLORS
 320     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 321     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 322     test ! -e "$COLORS"               && COLORS=
 323     # AIX (vx-track) has dircolors(1) but ls(1) doesn't support --color arg
 324     test "$UNAME" = "AIX"             && COLORS=
 325     eval `$dircolors --sh $COLORS`
 326 }
 327 unset dircolors
 328
 329 # enable color ls output if available
 330 test -n "$COLORS" &&
 331     LS_COMMON="--color=auto $LS_COMMON"
 332
 333 # setup the main ls alias if we've established common args
 334 test -n "$LS_COMMON" &&
 335     alias ls="command ls $LS_COMMON"
 336
 337 # these use the ls aliases above
 338 alias ll="ls -l"
 339 alias l.="ls -d .*"
 340 alias ll.="ls -ld .*"
 341 alias lla="ls -la"
 342
 343 # setup color grep output if available
 344 if [ -n "$COLORS" ]; then
 345     case "$UNAME" in
 346         "SunOS")
 347             # For Solaris, use the GNU version of grep for color support
 348             test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep --color=always"
 349             ;;
 350         *)
 351             alias grep="command grep --color=always"
 352             ;;
 353     esac
 354     # older versions of grep only support a singular highlight color
 355     export GREP_COLOR='1;37;42'
 356     # newer versions of grep have more flexible color configuration
 357     export GREP_COLORS='fn=36:ln=1;33:ms=1;37;42'
 358 fi
 359
 360 # --------------------------------------------------------------------
 361 # MISC COMMANDS
 362 # --------------------------------------------------------------------
 363
 364 # push SSH public key to another box
 365 push_ssh_cert() {
 366     local _host
 367     test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096
 368     for _host in "$@";
 369     do
 370         echo $_host
 371         ssh $_host 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub
 372     done
 373 }
 374
 375 # --------------------------------------------------------------------
 376 # PATH MANIPULATION FUNCTIONS
 377 # --------------------------------------------------------------------
 378
 379 # Usage: pls [<var>]
 380 # List path entries of PATH or environment variable <var>.
 381 pls () { eval echo \$${1:-PATH} |tr : '\n'; }
 382
 383 # Usage: pshift [-n <num>] [<var>]
 384 # Shift <num> entries off the front of PATH or environment var <var>.
 385 # with the <var> option. Useful: pshift $(pwd)
 386 pshift () {
 387     local n=1
 388     [ "$1" = "-n" ] && { n=$(( $2 + 1 )); shift 2; }
 389     eval "${1:-PATH}='$(pls |tail -n +$n |tr '\n' :)'"
 390 }
 391
 392 # Usage: ppop [-n <num>] [<var>]
 393 # Pop <num> entries off the end of PATH or environment variable <var>.
 394 ppop () {
 395     local n=1 i=0
 396     [ "$1" = "-n" ] && { n=$2; shift 2; }
 397     while [ $i -lt $n ]
 398     do eval "${1:-PATH}='\${${1:-PATH}%:*}'"
 399        i=$(( i + 1 ))
 400     done
 401 }
 402
 403 # Usage: prm <path> [<var>]
 404 # Remove <path> from PATH or environment variable <var>.
 405 prm () { eval "${2:-PATH}='$(pls $2 |grep -v "^$1\$" |tr '\n' :)'"; }
 406
 407 # Usage: punshift <path> [<var>]
 408 # Shift <path> onto the beginning of PATH or environment variable <var>.
 409 punshift () { eval "${2:-PATH}='$1:$(eval echo \$${2:-PATH})'"; }
 410
 411 # Usage: ppush <path> [<var>]
 412 ppush () { eval "${2:-PATH}='$(eval echo \$${2:-PATH})':$1"; }
 413
 414 # Usage: puniq [<path>]
 415 # Remove duplicate entries from a PATH style value while retaining
 416 # the original order. Use PATH if no <path> is given.
 417 #
 418 # Example:
 419 #   $ puniq /usr/bin:/usr/local/bin:/usr/bin
 420 #   /usr/bin:/usr/local/bin
 421 puniq () {
 422     echo "$1" | tr : '\n' | nl | sort -u -k 2,2 | sort -n |
 423     cut -f 2- | tr '\n' :
 424 }
 425
 426 # -------------------------------------------------------------------
 427 # USER SHELL ENVIRONMENT
 428 # -------------------------------------------------------------------
 429
 430 # source ~/.shenv now if it exists
 431 test -r ~/.shenv &&
 432     . ~/.shenv
 433
 434 # condense PATH entries
 435 PATH=$(puniq "$PATH")
 436 MANPATH=$(puniq "$MANPATH")
 437
 438 # Use the color prompt by default when interactive
 439 test -n "$PS1" &&
 440     prompt_color
 441
 442 # -------------------------------------------------------------------
 443 # MOTD / FORTUNE
 444 # -------------------------------------------------------------------
 445
 446 test -n "$INTERACTIVE" -a -n "$LOGIN" && {
 447     # Get current uname and uptime (if exists on this host)
 448     # Strip any leading whitespace from uname and uptime commands
 449     t_uname="$(test -n "`type -P uname`" && uname -npsr | sed -e 's/^\s+//')"
 450     t_uptime="$(test -n "`type -P uptime`" && uptime | sed -e 's/^\s+//')"
 451     if [ -n "$t_uname" ] || [ -n "$t_uptime" ]; then
 452         echo " --"
 453         test -n "$t_uname" && echo $t_uname
 454         test -n "$t_uptime" && echo $t_uptime
 455         echo " --"
 456     fi
 457     unset t_uname t_uptime
 458 }
 459
 460 # vim: ts=4 sts=4 shiftwidth=4 expandtab