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