.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 $(tput colors 2>&1) in
  27             tput* )
  28                 export TERM=xterm
  29                 ;;
  30         esac
  31         ;;
  32 esac
  33
  34 # ----------------------------------------------------------------------
  35 #  SHELL OPTIONS
  36 # ----------------------------------------------------------------------
  37
  38 # bring in system bashrc
  39 test -r /etc/bashrc &&
  40     . /etc/bashrc
  41
  42 # notify of bg job completion immediately
  43 set -o notify
  44
  45 # shell opts. see bash(1) for details
  46 shopt -s cdspell >/dev/null 2>&1
  47 shopt -s extglob >/dev/null 2>&1
  48 shopt -s histappend >/dev/null 2>&1
  49 shopt -s hostcomplete >/dev/null 2>&1
  50 shopt -s interactive_comments >/dev/null 2>&1
  51 shopt -u mailwarn >/dev/null 2>&1
  52 shopt -s no_empty_cmd_completion >/dev/null 2>&1
  53
  54 # don't check for new mail
  55 unset MAILCHECK
  56
  57 # disable core dumps
  58 ulimit -S -c 0
  59
  60 # default umask
  61 umask 0022
  62
  63 # ----------------------------------------------------------------------
  64 # PATH
  65 # ----------------------------------------------------------------------
  66
  67 # we want the various sbin's on the path along with /usr/local/bin
  68 PATH="$PATH:/usr/local/sbin:/usr/sbin:/sbin"
  69 PATH="/usr/local/bin:$PATH"
  70
  71 # put /opt/csw/* on PATH if exists (OpenCSW Solaris packages)
  72 test -d "/opt/csw" &&
  73     PATH="/opt/csw/sbin:/opt/csw/bin:$PATH"
  74
  75 # ~/.rvm/bin on PATH if exists (RVM)
  76 test -d "$HOME/.rvm/bin" &&
  77     PATH="$PATH:$HOME/.rvm/bin"
  78
  79 # put ~/bin on PATH if exists
  80 test -d "$HOME/bin" &&
  81     PATH="$HOME/bin:$PATH"
  82
  83 # put ~/sbin on PATH if exists
  84 test -d "$HOME/sbin" &&
  85     PATH="$HOME/sbin:$PATH"
  86
  87 # ----------------------------------------------------------------------
  88 # ENVIRONMENT CONFIGURATION
  89 # ----------------------------------------------------------------------
  90
  91 # detect interactive shell
  92 case "$-" in
  93     *i*) INTERACTIVE=yes ;;
  94     *)   unset INTERACTIVE ;;
  95 esac
  96
  97 # detect login shell
  98 case "$0" in
  99    -*) LOGIN=yes ;;
 100    *)  unset LOGIN ;;
 101 esac
 102
 103 # enable en_US locale w/ utf-8 encodings if not already
 104 # configured
 105 : ${LANG:="en_US.UTF-8"}
 106 : ${LANGUAGE:="en"}
 107 : ${LC_CTYPE:="en_US.UTF-8"}
 108 : ${LC_ALL:="en_US.UTF-8"}
 109 export LANG LANGUAGE LC_CTYPE LC_ALL
 110
 111 # ignore backups, CVS directories, python bytecode, vim swap files
 112 FIGNORE="~:CVS:#:.pyc:.swp:.swa:apache-solr-*"
 113
 114 # history stuff
 115 HISTCONTROL=ignoreboth
 116 HISTFILESIZE=10000
 117 HISTSIZE=10000
 118
 119 # ----------------------------------------------------------------------
 120 # PAGER / EDITOR
 121 # ----------------------------------------------------------------------
 122
 123 # see what we have to work with ...
 124 HAVE_VIM=$(command -v vim)
 125
 126 # EDITOR
 127 test -n "$HAVE_VIM" &&
 128     EDITOR=vim ||
 129     EDITOR=vi
 130 export EDITOR
 131
 132 # PAGER
 133 if test -n "$(command -v less)" ; then
 134     PAGER="less"
 135     MANPAGER="less"
 136     LESS="-FiRX"
 137     export LESS
 138 else
 139     PAGER=more
 140     MANPAGER="$PAGER"
 141 fi
 142 export PAGER MANPAGER
 143
 144 # ack
 145 ACK_PAGER="$PAGER"
 146 ACK_PAGER_COLOR="$PAGER"
 147
 148 # ----------------------------------------------------------------------
 149 # PROMPT
 150 # ----------------------------------------------------------------------
 151
 152 # http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 153
 154 if [ "$UID" = 0 ]; then
 155     # root
 156     PS_C1="\[\033[1;31m\]"  # red
 157     PS_C2="\[\033[0;37m\]"  # grey
 158     PS_P="#"
 159 else
 160     case "$UNAME" in
 161         Cygwin)
 162             PS_C1="\[\033[0;32m\]"  # green
 163             PS_C2="\[\033[0;37m\]"  # grey
 164             ;;
 165         Darwin)
 166             PS_C1="\[\033[1;97m\]"  # white
 167             PS_C2="\[\033[0;37m\]"  # grey
 168             ;;
 169         SunOS)
 170             PS_C1="\[\033[1;96m\]"  # cyan
 171             PS_C2="\[\033[0;36m\]"  # cyan
 172             ;;
 173         *)
 174             PS_C1="\[\033[1;93m\]"  # yellow
 175             PS_C2="\[\033[0;33m\]"  # brown
 176     esac
 177     PS_P="\$"
 178 fi
 179
 180 prompt_simple() {
 181     unset PROMPT_COMMAND
 182     PS1="[\u@\h:\w]\$ "
 183     PS2="> "
 184 }
 185
 186 prompt_compact() {
 187     unset PROMPT_COMMAND
 188     PS1="${PS_C1}${PS_P}\[\033[0m\] "
 189     PS2="> "
 190 }
 191
 192 prompt_color() {
 193     # if git and the git bash_completion scripts are installed, use __git_ps1() to show current branch info.
 194     # never show branch info for $HOME (dotfiles) repo.
 195     # use the following to exclude a given repo: `git config --local --bool --add bash.hidePrompt true`
 196     if [ -n "$(type -P git)" -a "$(type -t __git_ps1)" = "function" ]; then
 197         PS_GIT='$(test -n "$(__git_ps1 %s)" &&
 198                   test "$(git rev-parse --show-toplevel)" != "$HOME" &&
 199                   test "$(git config --bool bash.hidePrompt)" != "true" &&
 200                   __git_ps1 "{\[\033[0;100m\]%s\[\033[0;90m\]}")'
 201         export GIT_PS1_SHOWDIRTYSTATE=1
 202     fi
 203     PS1="\[\033[0;90m\][${PS_C1}\u@\h\[\033[0m\]\[\033[0;90m\]:${PS_C2}\w\[\033[0;90m\]]${PS_GIT}${PS_P}\[\033[0m\] "
 204     PS2="> "
 205 }
 206
 207 # ----------------------------------------------------------------------
 208 # MACOS X / DARWIN SPECIFIC
 209 # ----------------------------------------------------------------------
 210
 211 if [ "$UNAME" = Darwin ]; then
 212     # put ports on the paths if /opt/local exists
 213     test -x /opt/local -a ! -L /opt/local && {
 214         PORTS=/opt/local
 215
 216         # setup the PATH and MANPATH
 217         PATH="$PORTS/bin:$PORTS/sbin:$PATH"
 218         MANPATH="$PORTS/share/man:$MANPATH"
 219
 220         # nice little port alias
 221         alias port="sudo nice -n +18 $PORTS/bin/port"
 222     }
 223     # put coreutils on the paths if /usr/local/opt/coreutils/libexec exists
 224     test -x /usr/local/opt/coreutils/libexec -a ! -L /usr/local/opt/coreutils/libexec && {
 225         # setup the PATH and MANPATH
 226         PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
 227         MANPATH="/usr/local/opt/coreutils/libexec/gnuman:$MANPATH"
 228     }
 229 fi
 230
 231 # ----------------------------------------------------------------------
 232 # ALIASES / FUNCTIONS
 233 # ----------------------------------------------------------------------
 234
 235 # 'ls' helpers
 236 alias ll="ls -l"
 237 alias l.="ls -d .*"
 238 alias ll.="ls -ld .*"
 239 alias lla="ls -la"
 240
 241 # use 'git diff --no-index' as a prettier 'diff' alternative (if available)
 242 test -n "$(type -P git)" && alias diff="git diff --no-index"
 243
 244 # alias 'vi' to 'vim' if Vim is installed
 245 vim="$(type -P vim)"
 246 test -n "$vim" && {
 247     alias vi='vim'
 248 }
 249 unset vim
 250
 251 # disk usage with human sizes and minimal depth
 252 alias du1='du -h --max-depth=1'
 253 alias fn='find . -name'
 254 alias hi='history | tail -20'
 255
 256 # for Solaris, use GNU versions of core utils
 257 if [ "$UNAME" = SunOS ]; then
 258     test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep"
 259     test -x /usr/gnu/bin/sed  && alias sed="/usr/gnu/bin/sed"
 260     test -x /usr/gnu/bin/awk  && alias awk="/usr/gnu/bin/awk"
 261 fi
 262
 263 # alias csh-style "rebash" to bash equivalent
 264 alias rehash="hash -r"
 265
 266 # set 'screen' window title
 267 settitle() {
 268     printf "\033k%s\033\\" "$@"
 269 }
 270
 271 # ----------------------------------------------------------------------
 272 # BASH COMPLETION
 273 # ----------------------------------------------------------------------
 274
 275 test -z "$BASH_COMPLETION" && {
 276     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 277     test -n "$PS1" && test $bmajor -gt 1 && {
 278         # search for a bash_completion file to source
 279         for f in /usr/local/etc/bash_completion \
 280                  /usr/pkg/etc/bash_completion \
 281                  /opt/local/etc/bash_completion \
 282                  /etc/bash_completion
 283         do
 284             test -f $f && {
 285                 . $f
 286                 break
 287             }
 288         done
 289     }
 290     unset bash bmajor bminor
 291 }
 292
 293 # override and disable tilde expansion
 294 _expand() {
 295     return 0
 296 }
 297
 298 # ----------------------------------------------------------------------
 299 # LS AND DIRCOLORS
 300 # ----------------------------------------------------------------------
 301
 302 # we always pass these to ls(1)
 303 unset LS_COMMON
 304
 305 # if the dircolors utility is available, set that up for ls
 306 dircolors="$(type -P gdircolors dircolors | head -1)"
 307 test -n "$dircolors" && {
 308     COLORS=/etc/DIR_COLORS
 309     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 310     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 311     test ! -e "$COLORS"               && COLORS=
 312     eval `$dircolors --sh $COLORS`
 313 }
 314 unset dircolors
 315
 316 # enable color ls output if available
 317 test -n "$COLORS" &&
 318     LS_COMMON="--color=auto $LS_COMMON"
 319
 320 # setup the main ls alias if we've established common args
 321 test -n "$LS_COMMON" &&
 322     alias ls="command ls $LS_COMMON"
 323
 324 # setup color grep output if available
 325 if [ -n "$COLORS" ]; then
 326     case "$UNAME" in
 327         "SunOS")
 328             # for Solaris, use the GNU version of grep for color support
 329             test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep --color=always"
 330             ;;
 331         *)
 332             alias grep="command grep --color=always"
 333             ;;
 334     esac
 335     # older versions of grep only support a singular highlight color
 336     export GREP_COLOR='1;37;42'
 337     # newer versions of grep have more flexible color configuration
 338     export GREP_COLORS='fn=36:ln=1;33:ms=1;37;42'
 339 fi
 340
 341 # --------------------------------------------------------------------
 342 # MISC COMMANDS
 343 # --------------------------------------------------------------------
 344
 345 # push SSH public key to another box
 346 push_ssh_cert() {
 347     local _host
 348     test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096
 349     for _host in "$@";
 350     do
 351         echo $_host
 352         ssh $_host 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub
 353     done
 354 }
 355
 356 # --------------------------------------------------------------------
 357 # PATH MANIPULATION FUNCTIONS
 358 # --------------------------------------------------------------------
 359
 360 # Usage: pls [<var>]
 361 # List path entries of PATH or environment variable <var>.
 362 pls () { eval echo \$${1:-PATH} |tr : '\n'; }
 363
 364 # Usage: pshift [-n <num>] [<var>]
 365 # Shift <num> entries off the front of PATH or environment var <var>.
 366 # with the <var> option. Useful: pshift $(pwd)
 367 pshift () {
 368     local n=1
 369     [ "$1" = "-n" ] && { n=$(( $2 + 1 )); shift 2; }
 370     eval "${1:-PATH}='$(pls |tail -n +$n |tr '\n' :)'"
 371 }
 372
 373 # Usage: ppop [-n <num>] [<var>]
 374 # Pop <num> entries off the end of PATH or environment variable <var>.
 375 ppop () {
 376     local n=1 i=0
 377     [ "$1" = "-n" ] && { n=$2; shift 2; }
 378     while [ $i -lt $n ]
 379     do eval "${1:-PATH}='\${${1:-PATH}%:*}'"
 380        i=$(( i + 1 ))
 381     done
 382 }
 383
 384 # Usage: prm <path> [<var>]
 385 # Remove <path> from PATH or environment variable <var>.
 386 prm () { eval "${2:-PATH}='$(pls $2 |grep -v "^$1\$" |tr '\n' :)'"; }
 387
 388 # Usage: punshift <path> [<var>]
 389 # Shift <path> onto the beginning of PATH or environment variable <var>.
 390 punshift () { eval "${2:-PATH}='$1:$(eval echo \$${2:-PATH})'"; }
 391
 392 # Usage: ppush <path> [<var>]
 393 ppush () { eval "${2:-PATH}='$(eval echo \$${2:-PATH})':$1"; }
 394
 395 # Usage: puniq [<path>]
 396 # Remove duplicate entries from a PATH style value while retaining
 397 # the original order. Use PATH if no <path> is given.
 398 #
 399 # Example:
 400 #   $ puniq /usr/bin:/usr/local/bin:/usr/bin
 401 #   /usr/bin:/usr/local/bin
 402 puniq () {
 403     echo "$1" | tr : '\n' | nl | sort -u -k 2,2 | sort -n |
 404     cut -f 2- | tr '\n' : | sed -e 's/:$//' -e 's/^://'
 405 }
 406
 407 # -------------------------------------------------------------------
 408 # USER SHELL ENVIRONMENT
 409 # -------------------------------------------------------------------
 410
 411 # source ~/.shenv now if it exists
 412 test -r ~/.shenv &&
 413     . ~/.shenv
 414
 415 # condense PATH entries
 416 PATH=$(puniq "$PATH")
 417 MANPATH=$(puniq "$MANPATH")
 418
 419 # use the color prompt by default when interactive
 420 test -n "$PS1" &&
 421     prompt_color
 422
 423 # -------------------------------------------------------------------
 424 # MOTD / FORTUNE
 425 # -------------------------------------------------------------------
 426
 427 test -n "$INTERACTIVE" -a -n "$LOGIN" && {
 428     # get current uname and uptime (if exists on this host)
 429     # strip any leading whitespace from uname and uptime commands
 430     t_uname="$(test -n "`type -P uname`" && uname -npsr | sed -e 's/^\s+//')"
 431     t_uptime="$(test -n "`type -P uptime`" && uptime | sed -e 's/^\s+//')"
 432     if [ -n "$t_uname" ] || [ -n "$t_uptime" ]; then
 433         echo " --"
 434         test -n "$t_uname" && echo $t_uname
 435         test -n "$t_uptime" && echo $t_uptime
 436         echo " --"
 437     fi
 438     unset t_uname t_uptime
 439 }
 440
 441 # vim: ts=4 sts=4 shiftwidth=4 expandtab