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