.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 $(tput colors 2>&1) in
  27             tput* )
  28                 export TERM=xterm
  29                 ;;
  30         esac
  31         ;;
  32 esac
  33
  34 # ----------------------------------------------------------------------
  35 #  SHELL OPTIONS
  36 # ----------------------------------------------------------------------
  37
  38 # notify of bg job completion immediately
  39 set -o notify
  40
  41 # shell opts. see bash(1) for details
  42 shopt -s cdspell >/dev/null 2>&1
  43 shopt -s checkjobs >/dev/null 2>&1
  44 shopt -s checkwinsize >/dev/null 2>&1
  45 shopt -s extglob >/dev/null 2>&1
  46 shopt -s histappend >/dev/null 2>&1
  47 shopt -s hostcomplete >/dev/null 2>&1
  48 shopt -s interactive_comments >/dev/null 2>&1
  49 shopt -u mailwarn >/dev/null 2>&1
  50 shopt -s no_empty_cmd_completion >/dev/null 2>&1
  51
  52 # don't check for new mail
  53 unset MAILCHECK
  54
  55 # disable core dumps
  56 ulimit -S -c 0
  57
  58 # default umask
  59 umask 0022
  60
  61 # ----------------------------------------------------------------------
  62 # PATH
  63 # ----------------------------------------------------------------------
  64
  65 # include the various sbin's along with /usr/local/bin
  66 PATH="$PATH:/usr/local/sbin:/usr/sbin:/sbin"
  67 PATH="/usr/local/bin:$PATH"
  68
  69 # use $HOME specific bin and sbin
  70 test -d "$HOME/bin" && PATH="$HOME/bin:$PATH"
  71 test -d "$HOME/sbin" && PATH="$HOME/sbin:$PATH"
  72
  73 # SmartOS pkgin
  74 test -d "/opt/local" && PATH="/opt/local/sbin:/opt/local/bin:$PATH"
  75 # SmartOS local files
  76 test -d "/opt/custom" && PATH="/opt/custom/sbin:/opt/custom/bin:$PATH"
  77 # SmartOS SDC
  78 test -d "/smartdc" && PATH="/smartdc/bin:/opt/smartdc/bin:/opt/smartdc/agents/bin:$PATH"
  79 # SmartOS native binaries, for OS/LX zones
  80 test -d "/native" && PATH="$PATH:/native/usr/sbin:/native/usr/bin:/native/sbin:/native/bin"
  81
  82 # RVM
  83 test -d "$HOME/.rvm/bin" && PATH="$PATH:$HOME/.rvm/bin"
  84
  85 # setup $GOPATH
  86 test -d "/usr/local/share/golang" && export GOPATH=/usr/local/share/golang
  87 test -n "$GOPATH" && PATH="$PATH:$GOPATH/bin"
  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="$PAGER"
 143 fi
 144 export PAGER MANPAGER
 145
 146 # ----------------------------------------------------------------------
 147 # PROMPT
 148 # ----------------------------------------------------------------------
 149
 150 # http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 151
 152 if [ "$UID" = 0 ]; then
 153     # root
 154     PS_C1="\[\033[1;31m\]"  # red
 155     PS_C2="\[\033[0;37m\]"  # grey
 156     PS_P="#"
 157 else
 158     case "$UNAME" in
 159         Cygwin)
 160             PS_C1="\[\033[0;32m\]"  # green
 161             PS_C2="\[\033[0;37m\]"  # grey
 162             ;;
 163         Darwin)
 164             PS_C1="\[\033[1;97m\]"  # white
 165             PS_C2="\[\033[0;37m\]"  # grey
 166             ;;
 167         SunOS)
 168             PS_C1="\[\033[1;96m\]"  # cyan
 169             PS_C2="\[\033[0;36m\]"  # cyan
 170             ;;
 171         *)
 172             PS_C1="\[\033[1;93m\]"  # yellow
 173             PS_C2="\[\033[0;33m\]"  # brown
 174     esac
 175     PS_P="\$"
 176 fi
 177
 178 prompt_simple() {
 179     unset PROMPT_COMMAND
 180     PS1="[\u@\h:\w]\$ "
 181     PS2="> "
 182 }
 183
 184 prompt_compact() {
 185     unset PROMPT_COMMAND
 186     PS1="${PS_C1}${PS_P}\[\033[0m\] "
 187     PS2="> "
 188 }
 189
 190 prompt_color() {
 191     # if git and the git bash_completion scripts are installed, use __git_ps1() to show current branch info.
 192     # never show branch info for $HOME (dotfiles) repo.
 193     # use the following to exclude a given repo: `git config --local --bool --add bash.hidePrompt true`
 194     if [ -n "$(type -P git)" -a "$(type -t __git_ps1)" = "function" ]; then
 195         PS_GIT='$(test -n "$(__git_ps1 %s)" &&
 196                   test "$(git rev-parse --show-toplevel)" != "$HOME" &&
 197                   test "$(git config --bool bash.hidePrompt)" != "true" &&
 198                   __git_ps1 "{\[\033[0;40;36m\]%s\[\033[0;90m\]}")'
 199         export GIT_PS1_SHOWDIRTYSTATE=1
 200     fi
 201     PS1="\[\033[0;90m\][${PS_C1}\u@\h\[\033[0m\]\[\033[0;90m\]:${PS_C2}\w\[\033[0;90m\]]${PS_GIT}${PS_P}\[\033[0m\] "
 202     PS2="> "
 203 }
 204
 205 # ----------------------------------------------------------------------
 206 # MACOS X / DARWIN SPECIFIC
 207 # ----------------------------------------------------------------------
 208
 209 if [ "$UNAME" = Darwin ]; then
 210     # put ports on the paths if /opt/local exists
 211     test -x /opt/local -a ! -L /opt/local && {
 212         PORTS=/opt/local
 213
 214         # setup the PATH and MANPATH
 215         PATH="$PORTS/bin:$PORTS/sbin:$PATH"
 216         MANPATH="$PORTS/share/man:$MANPATH"
 217
 218         # nice little port alias
 219         alias port="sudo nice -n +18 $PORTS/bin/port"
 220     }
 221     # put coreutils on the paths if /usr/local/opt/coreutils/libexec exists
 222     test -x /usr/local/opt/coreutils/libexec -a ! -L /usr/local/opt/coreutils/libexec && {
 223         # setup the PATH and MANPATH
 224         PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
 225         MANPATH="/usr/local/opt/coreutils/libexec/gnuman:$MANPATH"
 226     }
 227 fi
 228
 229 # ----------------------------------------------------------------------
 230 # SOLARIS SPECIFIC
 231 # ----------------------------------------------------------------------
 232
 233 if [ "$UNAME" = SunOS ]; then
 234     # use GNU versions of core utils
 235     test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep"
 236     test -x /usr/gnu/bin/sed  && alias sed="/usr/gnu/bin/sed"
 237     test -x /usr/gnu/bin/awk  && alias awk="/usr/gnu/bin/awk"
 238
 239     # setup MANPATH
 240     MANPATH="/usr/share/man:/smartdc/man:/opt/smartdc/man:/opt/local/man:/opt/custom/man:$MANPATH"
 241 fi
 242
 243 # ----------------------------------------------------------------------
 244 # ALIASES / FUNCTIONS
 245 # ----------------------------------------------------------------------
 246
 247 # 'ls' helpers
 248 alias ll="ls -l"
 249 alias l.="ls -d .*"
 250 alias ll.="ls -ld .*"
 251 alias lla="ls -la"
 252
 253 # use 'git diff --no-index' as a prettier 'diff' alternative (if available)
 254 test -n "$(type -P git)" && alias diff="git diff --no-index"
 255
 256 # alias 'vi' to 'vim' if Vim is installed
 257 vim="$(type -P vim)"
 258 test -n "$vim" && {
 259     alias vi='vim'
 260 }
 261 unset vim
 262
 263 # disk usage with human sizes and minimal depth
 264 alias du1='du -h --max-depth=1'
 265 alias fn='find . -name'
 266 alias hi='history | tail -20'
 267
 268 # alias csh-style "rebash" to bash equivalent
 269 alias rehash="hash -r"
 270
 271 # set 'screen' window title
 272 settitle() {
 273     printf "\033k%s\033\\" "$@"
 274 }
 275
 276 # svn-wrapper
 277 alias svn=svn-wrapper
 278
 279 # ----------------------------------------------------------------------
 280 # BASH COMPLETION
 281 # ----------------------------------------------------------------------
 282
 283 test -z "$BASH_COMPLETION" && {
 284     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 285     test -n "$PS1" && test $bmajor -gt 1 && {
 286         # search for a bash_completion file to source
 287         for f in /usr/local/etc/bash_completion \
 288                  /usr/pkg/etc/bash_completion \
 289                  /opt/local/etc/bash_completion \
 290                  /etc/bash_completion \
 291                  /etc/bash/bash_completion
 292         do
 293             test -f $f && {
 294                 . $f
 295                 break
 296             }
 297         done
 298     }
 299     unset bash bmajor bminor
 300 }
 301
 302 # restore some key environment variables which may have been unset
 303 # by bash_completion script
 304 : ${HOME=~}
 305 : ${LOGNAME=$(id -un)}
 306 : ${UNAME=$(uname)}
 307
 308 # override and disable tilde expansion
 309 _expand() {
 310     return 0
 311 }
 312
 313 # ----------------------------------------------------------------------
 314 # LS AND DIRCOLORS
 315 # ----------------------------------------------------------------------
 316
 317 # we always pass these to ls(1)
 318 LS_COMMON="-p"
 319
 320 # if the dircolors utility is available, set that up for ls
 321 dircolors="$(type -P gdircolors dircolors | head -1)"
 322 test -n "$dircolors" && {
 323     COLORS=/etc/DIR_COLORS
 324     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 325     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 326     test ! -e "$COLORS"               && COLORS=
 327     eval `$dircolors --sh $COLORS`
 328 }
 329 unset dircolors
 330
 331 # enable color ls output if available
 332 test -n "$COLORS" &&
 333     LS_COMMON="--color=auto $LS_COMMON"
 334
 335 # setup the main ls alias if we've established common args
 336 test -n "$LS_COMMON" &&
 337     alias ls="command ls $LS_COMMON"
 338
 339 # setup color grep output if available
 340 if [ -n "$COLORS" ]; then
 341     case "$UNAME" in
 342         "SunOS")
 343             test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep --color=always"
 344             test -x /opt/local/bin/grep && alias grep="/opt/local/bin/grep --color=always"
 345             ;;
 346         *)
 347             alias grep="command grep --color=always"
 348             ;;
 349     esac
 350     # older versions of grep only support a singular highlight color
 351     export GREP_COLOR='1;37;42'
 352     # newer versions of grep have more flexible color configuration
 353     export GREP_COLORS='fn=36:ln=1;33:ms=1;37;42'
 354 fi
 355
 356 # --------------------------------------------------------------------
 357 # MISC COMMANDS
 358 # --------------------------------------------------------------------
 359
 360 # push SSH public key to another box
 361 push_ssh_cert() {
 362     local _host
 363     test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096
 364     for _host in "$@";
 365     do
 366         echo $_host
 367         ssh $_host 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub
 368     done
 369 }
 370
 371 # --------------------------------------------------------------------
 372 # PATH MANIPULATION FUNCTIONS
 373 # --------------------------------------------------------------------
 374
 375 # Usage: pls [<var>]
 376 # List path entries of PATH or environment variable <var>.
 377 pls () { eval echo \$${1:-PATH} |tr : '\n'; }
 378
 379 # Usage: pshift [-n <num>] [<var>]
 380 # Shift <num> entries off the front of PATH or environment var <var>.
 381 # with the <var> option. Useful: pshift $(pwd)
 382 pshift () {
 383     local n=1
 384     [ "$1" = "-n" ] && { n=$(( $2 + 1 )); shift 2; }
 385     eval "${1:-PATH}='$(pls |tail -n +$n |tr '\n' :)'"
 386 }
 387
 388 # Usage: ppop [-n <num>] [<var>]
 389 # Pop <num> entries off the end of PATH or environment variable <var>.
 390 ppop () {
 391     local n=1 i=0
 392     [ "$1" = "-n" ] && { n=$2; shift 2; }
 393     while [ $i -lt $n ]
 394     do eval "${1:-PATH}='\${${1:-PATH}%:*}'"
 395        i=$(( i + 1 ))
 396     done
 397 }
 398
 399 # Usage: prm <path> [<var>]
 400 # Remove <path> from PATH or environment variable <var>.
 401 prm () { eval "${2:-PATH}='$(pls $2 |grep -v "^$1\$" |tr '\n' :)'"; }
 402
 403 # Usage: punshift <path> [<var>]
 404 # Shift <path> onto the beginning of PATH or environment variable <var>.
 405 punshift () { eval "${2:-PATH}='$1:$(eval echo \$${2:-PATH})'"; }
 406
 407 # Usage: ppush <path> [<var>]
 408 ppush () { eval "${2:-PATH}='$(eval echo \$${2:-PATH})':$1"; }
 409
 410 # Usage: puniq [<path>]
 411 # Remove duplicate entries from a PATH style value while retaining
 412 # the original order. Use PATH if no <path> is given.
 413 #
 414 # Example:
 415 #   $ puniq /usr/bin:/usr/local/bin:/usr/bin
 416 #   /usr/bin:/usr/local/bin
 417 puniq () {
 418     echo "$1" | tr : '\n' | nl | sort -u -k 2,2 | sort -n |
 419     cut -f 2- | tr '\n' : | sed -e 's/:$//' -e 's/^://'
 420 }
 421
 422 # -------------------------------------------------------------------
 423 # USER SHELL ENVIRONMENT
 424 # -------------------------------------------------------------------
 425
 426 # source ~/.shenv now if it exists
 427 test -r ~/.shenv &&
 428     . ~/.shenv
 429
 430 # condense PATH entries
 431 PATH=$(puniq "$PATH")
 432 MANPATH=$(puniq "$MANPATH")
 433
 434 # use the color prompt by default when interactive
 435 test -n "$PS1" &&
 436     prompt_color
 437
 438 # -------------------------------------------------------------------
 439 # MOTD / FORTUNE
 440 # -------------------------------------------------------------------
 441
 442 test -n "$INTERACTIVE" -a -n "$LOGIN" && {
 443     # get current uname and uptime (if exists on this host)
 444     # strip any leading whitespace from uname and uptime commands
 445     t_uname="$(test -n "`type -P uname`" && uname -npsr | sed -e 's/^\s+//')"
 446     t_uptime="$(test -n "`type -P uptime`" && uptime | sed -e 's/^\s+//')"
 447     if [ -n "$t_uname" ] || [ -n "$t_uptime" ]; then
 448         echo " --"
 449         test -n "$t_uname" && echo $t_uname
 450         test -n "$t_uptime" && echo $t_uptime
 451         echo " --"
 452     fi
 453     unset t_uname t_uptime
 454 }
 455
 456 # vim: ts=4 sts=4 shiftwidth=4 expandtab