.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 $(tput colors 2>&1) in
  28             tput* )
  29                 export TERM=xterm
  30                 ;;
  31         esac
  32         ;;
  33 esac
  34
  35 if [ "$UNAME" = "Darwin" ]; then
  36     # Fink init, for OSX
  37     test -r /sw/bin/init.sh &&
  38         source /sw/bin/init.sh
  39 fi
  40
  41 # ----------------------------------------------------------------------
  42 #  SHELL OPTIONS
  43 # ----------------------------------------------------------------------
  44
  45 # bring in system bashrc
  46 test -r /etc/bashrc &&
  47     . /etc/bashrc
  48
  49 # notify of bg job completion immediately
  50 set -o notify
  51
  52 # shell opts. see bash(1) for details
  53 shopt -s cdspell >/dev/null 2>&1
  54 shopt -s extglob >/dev/null 2>&1
  55 shopt -s histappend >/dev/null 2>&1
  56 shopt -s hostcomplete >/dev/null 2>&1
  57 shopt -s interactive_comments >/dev/null 2>&1
  58 shopt -u mailwarn >/dev/null 2>&1
  59 shopt -s no_empty_cmd_completion >/dev/null 2>&1
  60
  61 # don't check for new mail
  62 unset MAILCHECK
  63
  64 # disable core dumps
  65 ulimit -S -c 0
  66
  67 # default umask
  68 umask 0022
  69
  70 # ----------------------------------------------------------------------
  71 # PATH
  72 # ----------------------------------------------------------------------
  73
  74 # we want the various sbin's on the path along with /usr/local/bin
  75 PATH="$PATH:/usr/local/sbin:/usr/sbin:/sbin"
  76 PATH="/usr/local/bin:$PATH"
  77
  78 # put /opt/csw/* on PATH if exists (OpenCSW Solaris packages)
  79 test -d "/opt/csw" &&
  80     PATH="/opt/csw/sbin:/opt/csw/bin:$PATH"
  81
  82 # ~/.rvm/bin on PATH if exists (RVM)
  83 test -d "$HOME/.rvm/bin" &&
  84     PATH="$PATH:$HOME/.rvm/bin"
  85
  86 # put ~/bin on PATH if exists
  87 test -d "$HOME/bin" &&
  88     PATH="$HOME/bin:$PATH"
  89
  90 # put ~/sbin on PATH if exists
  91 test -d "$HOME/sbin" &&
  92     PATH="$HOME/sbin:$PATH"
  93
  94 # ----------------------------------------------------------------------
  95 # ENVIRONMENT CONFIGURATION
  96 # ----------------------------------------------------------------------
  97
  98 # detect interactive shell
  99 case "$-" in
 100     *i*) INTERACTIVE=yes ;;
 101     *)   unset INTERACTIVE ;;
 102 esac
 103
 104 # detect login shell
 105 case "$0" in
 106    -*) LOGIN=yes ;;
 107    *)  unset LOGIN ;;
 108 esac
 109
 110 # setup locale. Try to enable en_US locale w/ utf-8 encodings
 111 # (if not already configured), but do graceful fall-back.
 112 lclist=$(locale -a | grep en_US)
 113 if test -n "$(echo $lclist | grep UTF-8)"; then
 114     : ${LANG:="en_US.UTF-8"}
 115     : ${LANGUAGE:="en"}
 116     : ${LC_CTYPE:="en_US.UTF-8"}
 117     : ${LC_ALL:="en_US.UTF-8"}
 118 elif test -n "$(echo $lclist | grep utf8)"; then
 119     : ${LANG:="en_US.utf8"}
 120     : ${LANGUAGE:="en"}
 121     : ${LC_CTYPE:="en_US.utf8"}
 122     : ${LC_ALL:="en_US.utf8"}
 123 elif test -n "$(echo $lclist | grep ISO8859-1)"; then
 124     : ${LANG:="en_US.ISO8859-1"}
 125     : ${LANGUAGE:="en"}
 126     : ${LC_CTYPE:="en_US.ISO8859-1"}
 127     : ${LC_ALL:="en_US.ISO8859-1"}
 128 else
 129     : ${LANG:="en_US"}
 130     : ${LANGUAGE:="en"}
 131     : ${LC_CTYPE:="en_US"}
 132     : ${LC_ALL:="en_US"}
 133 fi
 134 export LANG LANGUAGE LC_CTYPE LC_ALL
 135 unset lclist
 136
 137 # ignore backups, CVS directories, python bytecode, vim swap files
 138 FIGNORE="~:CVS:#:.pyc:.swp:.swa:apache-solr-*"
 139
 140 # history stuff
 141 HISTCONTROL=ignoreboth
 142 HISTFILESIZE=10000
 143 HISTSIZE=10000
 144
 145 # ----------------------------------------------------------------------
 146 # PAGER / EDITOR
 147 # ----------------------------------------------------------------------
 148
 149 # See what we have to work with ...
 150 HAVE_VIM=$(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="$PAGER"
 167 fi
 168 export PAGER MANPAGER
 169
 170 # Ack
 171 ACK_PAGER="$PAGER"
 172 ACK_PAGER_COLOR="$PAGER"
 173
 174 # ----------------------------------------------------------------------
 175 # PROMPT
 176 # ----------------------------------------------------------------------
 177
 178 # http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 179
 180 if [ "$UID" = 0 ]; then
 181     # root
 182     PS_C1="\[\033[1;31m\]"  # red
 183     PS_C2="\[\033[0;37m\]"  # grey
 184     PS_P="#"
 185 else
 186     case "$UNAME" in
 187         Cygwin)
 188             PS_C1="\[\033[0;32m\]"  # green
 189             PS_C2="\[\033[0;37m\]"  # grey
 190             ;;
 191         Darwin)
 192             PS_C1="\[\033[1;97m\]"  # white
 193             PS_C2="\[\033[0;37m\]"  # grey
 194             ;;
 195         SunOS | AIX)
 196             PS_C1="\[\033[1;96m\]"  # cyan
 197             PS_C2="\[\033[0;36m\]"  # cyan
 198             ;;
 199         *)
 200             PS_C1="\[\033[1;93m\]"  # yellow
 201             PS_C2="\[\033[0;33m\]"  # brown
 202     esac
 203     PS_P="\$"
 204 fi
 205
 206 prompt_simple() {
 207     unset PROMPT_COMMAND
 208     PS1="[\u@\h:\w]\$ "
 209     PS2="> "
 210 }
 211
 212 prompt_compact() {
 213     unset PROMPT_COMMAND
 214     PS1="${PS_C1}${PS_P}\[\033[0m\] "
 215     PS2="> "
 216 }
 217
 218 prompt_color() {
 219     # If git and the git bash_completion scripts are installed, use __git_ps1() to show current branch info.
 220     # Never show branch info for $HOME (dotfiles) repo.
 221     # Use the following to exclude a given repo: `git config --local --bool --add bash.hidePrompt true`
 222     if [ -n "$(type -P git)" -a "$(type -t __git_ps1)" = "function" ]; then
 223         PS_GIT='$(test -n "$(__git_ps1 %s)" &&
 224                   test "$(git rev-parse --show-toplevel)" != "$HOME" &&
 225                   test "$(git config --bool bash.hidePrompt)" != "true" &&
 226                   __git_ps1 "{\[\033[0;100m\]%s\[\033[0;90m\]}")'
 227         export GIT_PS1_SHOWDIRTYSTATE=1
 228     fi
 229     PS1="\[\033[0;90m\][${PS_C1}\u@\h\[\033[0m\]\[\033[0;90m\]:${PS_C2}\w\[\033[0;90m\]]${PS_GIT}${PS_P}\[\033[0m\] "
 230     PS2="> "
 231 }
 232
 233 # ----------------------------------------------------------------------
 234 # MACOS X / DARWIN SPECIFIC
 235 # ----------------------------------------------------------------------
 236
 237 if [ "$UNAME" = Darwin ]; then
 238     # put ports on the paths if /opt/local exists
 239     test -x /opt/local -a ! -L /opt/local && {
 240         PORTS=/opt/local
 241
 242         # setup the PATH and MANPATH
 243         PATH="$PORTS/bin:$PORTS/sbin:$PATH"
 244         MANPATH="$PORTS/share/man:$MANPATH"
 245
 246         # nice little port alias
 247         alias port="sudo nice -n +18 $PORTS/bin/port"
 248     }
 249 fi
 250
 251 # ----------------------------------------------------------------------
 252 # ALIASES / FUNCTIONS
 253 # ----------------------------------------------------------------------
 254
 255 # alias 'vi' to 'vim' if Vim is installed
 256 vim="$(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 # ----------------------------------------------------------------------
 278 # BASH COMPLETION
 279 # ----------------------------------------------------------------------
 280
 281 test -z "$BASH_COMPLETION" && {
 282     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 283     test -n "$PS1" && test $bmajor -gt 1 && {
 284         # search for a bash_completion file to source
 285         for f in /usr/local/etc/bash_completion \
 286                  /usr/pkg/etc/bash_completion \
 287                  /opt/local/etc/bash_completion \
 288                  /etc/bash_completion
 289         do
 290             test -f $f && {
 291                 . $f
 292                 break
 293             }
 294         done
 295     }
 296     unset bash bmajor bminor
 297 }
 298
 299 # override and disable tilde expansion
 300 _expand() {
 301     return 0
 302 }
 303
 304 # ----------------------------------------------------------------------
 305 # LS AND DIRCOLORS
 306 # ----------------------------------------------------------------------
 307
 308 # we always pass these to ls(1)
 309 unset LS_COMMON
 310 ## OS-specific options
 311 #case "$UNAME" in
 312 #    "Linux" ) LS_COMMON="--color=auto";;
 313 #    "Cygwin" ) LS_COMMON="--color=auto";;
 314 #    "Darwin" ) LS_COMMON="--color=auto";;
 315 #esac
 316
 317 # if the dircolors utility is available, set that up for ls
 318 dircolors="$(type -P gdircolors dircolors | head -1)"
 319 test -n "$dircolors" && {
 320     COLORS=/etc/DIR_COLORS
 321     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 322     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 323     test ! -e "$COLORS"               && COLORS=
 324     # AIX (vx-track) has dircolors(1) but ls(1) doesn't support --color arg
 325     test "$UNAME" = "AIX"             && COLORS=
 326     eval `$dircolors --sh $COLORS`
 327 }
 328 unset dircolors
 329
 330 # enable color ls output if available
 331 test -n "$COLORS" &&
 332     LS_COMMON="--color=auto $LS_COMMON"
 333
 334 # setup the main ls alias if we've established common args
 335 test -n "$LS_COMMON" &&
 336     alias ls="command ls $LS_COMMON"
 337
 338 # these use the ls aliases above
 339 alias ll="ls -l"
 340 alias l.="ls -d .*"
 341 alias ll.="ls -ld .*"
 342 alias lla="ls -la"
 343
 344 # setup color grep output if available
 345 if [ -n "$COLORS" ]; then
 346     case "$UNAME" in
 347         "SunOS")
 348             # For Solaris, use the GNU version of grep for color support
 349             test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep --color=always"
 350             ;;
 351         *)
 352             alias grep="command grep --color=always"
 353             ;;
 354     esac
 355     # older versions of grep only support a singular highlight color
 356     export GREP_COLOR='1;37;42'
 357     # newer versions of grep have more flexible color configuration
 358     export GREP_COLORS='fn=36:ln=1;33:ms=1;37;42'
 359 fi
 360
 361 # --------------------------------------------------------------------
 362 # MISC COMMANDS
 363 # --------------------------------------------------------------------
 364
 365 # push SSH public key to another box
 366 push_ssh_cert() {
 367     local _host
 368     test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096
 369     for _host in "$@";
 370     do
 371         echo $_host
 372         ssh $_host 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub
 373     done
 374 }
 375
 376 # --------------------------------------------------------------------
 377 # PATH MANIPULATION FUNCTIONS
 378 # --------------------------------------------------------------------
 379
 380 # Usage: pls [<var>]
 381 # List path entries of PATH or environment variable <var>.
 382 pls () { eval echo \$${1:-PATH} |tr : '\n'; }
 383
 384 # Usage: pshift [-n <num>] [<var>]
 385 # Shift <num> entries off the front of PATH or environment var <var>.
 386 # with the <var> option. Useful: pshift $(pwd)
 387 pshift () {
 388     local n=1
 389     [ "$1" = "-n" ] && { n=$(( $2 + 1 )); shift 2; }
 390     eval "${1:-PATH}='$(pls |tail -n +$n |tr '\n' :)'"
 391 }
 392
 393 # Usage: ppop [-n <num>] [<var>]
 394 # Pop <num> entries off the end of PATH or environment variable <var>.
 395 ppop () {
 396     local n=1 i=0
 397     [ "$1" = "-n" ] && { n=$2; shift 2; }
 398     while [ $i -lt $n ]
 399     do eval "${1:-PATH}='\${${1:-PATH}%:*}'"
 400        i=$(( i + 1 ))
 401     done
 402 }
 403
 404 # Usage: prm <path> [<var>]
 405 # Remove <path> from PATH or environment variable <var>.
 406 prm () { eval "${2:-PATH}='$(pls $2 |grep -v "^$1\$" |tr '\n' :)'"; }
 407
 408 # Usage: punshift <path> [<var>]
 409 # Shift <path> onto the beginning of PATH or environment variable <var>.
 410 punshift () { eval "${2:-PATH}='$1:$(eval echo \$${2:-PATH})'"; }
 411
 412 # Usage: ppush <path> [<var>]
 413 ppush () { eval "${2:-PATH}='$(eval echo \$${2:-PATH})':$1"; }
 414
 415 # Usage: puniq [<path>]
 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 () {
 423     echo "$1" | tr : '\n' | nl | sort -u -k 2,2 | sort -n |
 424     cut -f 2- | tr '\n' :
 425 }
 426
 427 # -------------------------------------------------------------------
 428 # USER SHELL ENVIRONMENT
 429 # -------------------------------------------------------------------
 430
 431 # source ~/.shenv now if it exists
 432 test -r ~/.shenv &&
 433     . ~/.shenv
 434
 435 # condense PATH entries
 436 PATH=$(puniq "$PATH")
 437 MANPATH=$(puniq "$MANPATH")
 438
 439 # Use the color prompt by default when interactive
 440 test -n "$PS1" &&
 441     prompt_color
 442
 443 # -------------------------------------------------------------------
 444 # MOTD / FORTUNE
 445 # -------------------------------------------------------------------
 446
 447 test -n "$INTERACTIVE" -a -n "$LOGIN" && {
 448     # Get current uname and uptime (if exists on this host)
 449     # Strip any leading whitespace from uname and uptime commands
 450     t_uname="$(test -n "`type -P uname`" && uname -npsr | sed -e 's/^\s+//')"
 451     t_uptime="$(test -n "`type -P uptime`" && uptime | sed -e 's/^\s+//')"
 452     if [ -n "$t_uname" ] || [ -n "$t_uptime" ]; then
 453         echo " --"
 454         test -n "$t_uname" && echo $t_uname
 455         test -n "$t_uptime" && echo $t_uptime
 456         echo " --"
 457     fi
 458     unset t_uname t_uptime
 459 }
 460
 461 # vim: ts=4 sts=4 shiftwidth=4 expandtab