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