.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 "$PS1" ] && return
   8
   9 # the basics
  10 PATH="/usr/local/bin:/bin:/usr/bin:/usr/sbin:/usr/local/sbin:/sbin:$PATH"
  11 : ${HOME=~}
  12 : ${LOGNAME=$(id -un)}
  13 : ${UNAME=$(uname)}
  14 # strip OS type and version under Cygwin (e.g. CYGWIN_NT-5.1 => Cygwin)
  15 UNAME=${UNAME/CYGWIN_*/Cygwin}
  16
  17 # complete hostnames from this file
  18 HOSTFILE=~/.ssh/known_hosts
  19
  20 # readline config
  21 INPUTRC=~/.inputrc
  22
  23 # if current $TERM isn't valid, fall-back to TERM=xterm-color or TERM=xterm
  24 case $(tput colors 2>&1) in
  25     tput* )
  26         export TERM=xterm-color
  27         case $(tput colors 2>&1) in
  28             tput* )
  29                 export TERM=xterm
  30                 ;;
  31         esac
  32         ;;
  33 esac
  34
  35 # ----------------------------------------------------------------------
  36 #  SHELL OPTIONS
  37 # ----------------------------------------------------------------------
  38
  39 # notify of bg job completion immediately
  40 set -o notify
  41
  42 # shell opts. see bash(1) for details
  43 shopt -s cdspell >/dev/null 2>&1
  44 shopt -s checkjobs >/dev/null 2>&1
  45 shopt -s checkwinsize >/dev/null 2>&1
  46 shopt -s extglob >/dev/null 2>&1
  47 shopt -s histappend >/dev/null 2>&1
  48 shopt -s hostcomplete >/dev/null 2>&1
  49 shopt -s interactive_comments >/dev/null 2>&1
  50 shopt -u mailwarn >/dev/null 2>&1
  51 shopt -s no_empty_cmd_completion >/dev/null 2>&1
  52
  53 # don't check for new mail
  54 unset MAILCHECK
  55
  56 # disable core dumps
  57 ulimit -S -c 0
  58
  59 # default umask
  60 umask 0022
  61
  62 # ----------------------------------------------------------------------
  63 # PATH
  64 # ----------------------------------------------------------------------
  65
  66 # we want the various sbin's on the path along with /usr/local/bin
  67 PATH="$PATH:/usr/local/sbin:/usr/sbin:/sbin"
  68 PATH="/usr/local/bin:$PATH"
  69
  70 # put /opt/csw/* on PATH if exists (OpenCSW Solaris packages)
  71 test -d "/opt/csw" &&
  72     PATH="/opt/csw/sbin:/opt/csw/bin:$PATH"
  73
  74 # ~/.rvm/bin on PATH if exists (RVM)
  75 test -d "$HOME/.rvm/bin" &&
  76     PATH="$PATH:$HOME/.rvm/bin"
  77
  78 # put ~/bin on PATH if exists
  79 test -d "$HOME/bin" &&
  80     PATH="$HOME/bin:$PATH"
  81
  82 # put ~/sbin on PATH if exists
  83 test -d "$HOME/sbin" &&
  84     PATH="$HOME/sbin:$PATH"
  85
  86 # setup $GOPATH
  87 test -d "/usr/local/share/golang" &&
  88     export GOPATH=/usr/local/share/golang
  89 test -n "$GOPATH" &&
  90     PATH="$PATH:$GOPATH/bin"
  91
  92 # ----------------------------------------------------------------------
  93 # ENVIRONMENT CONFIGURATION
  94 # ----------------------------------------------------------------------
  95
  96 # detect interactive shell
  97 case "$-" in
  98     *i*) INTERACTIVE=yes ;;
  99     *)   unset INTERACTIVE ;;
 100 esac
 101
 102 # detect login shell
 103 case "$0" in
 104    -*) LOGIN=yes ;;
 105    *)  unset LOGIN ;;
 106 esac
 107
 108 # setup locale. Try to enable en_US locale w/ utf-8 encodings
 109 # (if not already configured), but do graceful fall-back.
 110 lclist=$(locale -a | grep en_US)
 111 if test -n "$(echo $lclist | grep UTF-8)"; then
 112     : ${LANG:="en_US.UTF-8"}
 113     : ${LANGUAGE:="en"}
 114     : ${LC_CTYPE:="en_US.UTF-8"}
 115     : ${LC_ALL:="en_US.UTF-8"}
 116 elif test -n "$(echo $lclist | grep utf8)"; then
 117     : ${LANG:="en_US.utf8"}
 118     : ${LANGUAGE:="en"}
 119     : ${LC_CTYPE:="en_US.utf8"}
 120     : ${LC_ALL:="en_US.utf8"}
 121 elif test -n "$(echo $lclist | grep ISO8859-1)"; then
 122     : ${LANG:="en_US.ISO8859-1"}
 123     : ${LANGUAGE:="en"}
 124     : ${LC_CTYPE:="en_US.ISO8859-1"}
 125     : ${LC_ALL:="en_US.ISO8859-1"}
 126 else
 127     : ${LANG:="en_US"}
 128     : ${LANGUAGE:="en"}
 129     : ${LC_CTYPE:="en_US"}
 130     : ${LC_ALL:="en_US"}
 131 fi
 132 export LANG LANGUAGE LC_CTYPE LC_ALL
 133 unset lclist
 134
 135 # ignore backups, CVS directories, python bytecode, vim swap files
 136 FIGNORE="~:CVS:#:.pyc:.swp:.swa:apache-solr-*"
 137
 138 # history stuff
 139 HISTCONTROL=ignoreboth
 140 HISTFILESIZE=10000
 141 HISTSIZE=10000
 142
 143 # ----------------------------------------------------------------------
 144 # PAGER / EDITOR
 145 # ----------------------------------------------------------------------
 146
 147 # see what we have to work with ...
 148 HAVE_VIM=$(command -v vim)
 149
 150 # EDITOR
 151 test -n "$HAVE_VIM" &&
 152     EDITOR=vim ||
 153     EDITOR=vi
 154 export EDITOR
 155
 156 # PAGER
 157 if test -n "$(command -v less)" ; then
 158     PAGER="less"
 159     MANPAGER="less"
 160     LESS="-FiRX"
 161     export LESS
 162 else
 163     PAGER=more
 164     MANPAGER="$PAGER"
 165 fi
 166 export PAGER MANPAGER
 167
 168 # ----------------------------------------------------------------------
 169 # PROMPT
 170 # ----------------------------------------------------------------------
 171
 172 # http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 173
 174 if [ "$UID" = 0 ]; then
 175     # root
 176     PS_C1="\[\033[1;31m\]"  # red
 177     PS_C2="\[\033[0;37m\]"  # grey
 178     PS_P="#"
 179 else
 180     case "$UNAME" in
 181         Cygwin)
 182             PS_C1="\[\033[0;32m\]"  # green
 183             PS_C2="\[\033[0;37m\]"  # grey
 184             ;;
 185         Darwin)
 186             PS_C1="\[\033[1;97m\]"  # white
 187             PS_C2="\[\033[0;37m\]"  # grey
 188             ;;
 189         SunOS | AIX)
 190             PS_C1="\[\033[1;96m\]"  # cyan
 191             PS_C2="\[\033[0;36m\]"  # cyan
 192             ;;
 193         *)
 194             PS_C1="\[\033[1;93m\]"  # yellow
 195             PS_C2="\[\033[0;33m\]"  # brown
 196     esac
 197     PS_P="\$"
 198 fi
 199
 200 prompt_simple() {
 201     unset PROMPT_COMMAND
 202     PS1="[\u@\h:\w]\$ "
 203     PS2="> "
 204 }
 205
 206 prompt_compact() {
 207     unset PROMPT_COMMAND
 208     PS1="${PS_C1}${PS_P}\[\033[0m\] "
 209     PS2="> "
 210 }
 211
 212 prompt_color() {
 213     # if git and the git bash_completion scripts are installed, use __git_ps1() to show current branch info.
 214     # never show branch info for $HOME (dotfiles) repo.
 215     # use the following to exclude a given repo: `git config --local --bool --add bash.hidePrompt true`
 216     if [ -n "$(type -P git)" -a "$(type -t __git_ps1)" = "function" ]; then
 217         PS_GIT='$(test -n "$(__git_ps1 %s)" &&
 218                   test "$(git rev-parse --show-toplevel)" != "$HOME" &&
 219                   test "$(git config --bool bash.hidePrompt)" != "true" &&
 220                   __git_ps1 "{\[\033[0;40;36m\]%s\[\033[0;90m\]}")'
 221         export GIT_PS1_SHOWDIRTYSTATE=1
 222     fi
 223     PS1="\[\033[0;90m\][${PS_C1}\u@\h\[\033[0m\]\[\033[0;90m\]:${PS_C2}\w\[\033[0;90m\]]${PS_GIT}${PS_P}\[\033[0m\] "
 224     PS2="> "
 225 }
 226
 227 # ----------------------------------------------------------------------
 228 # MACOS X / DARWIN SPECIFIC
 229 # ----------------------------------------------------------------------
 230
 231 if [ "$UNAME" = Darwin ]; then
 232     # put ports on the paths if /opt/local exists
 233     test -x /opt/local -a ! -L /opt/local && {
 234         PORTS=/opt/local
 235
 236         # setup the PATH and MANPATH
 237         PATH="$PORTS/bin:$PORTS/sbin:$PATH"
 238         MANPATH="$PORTS/share/man:$MANPATH"
 239
 240         # nice little port alias
 241         alias port="sudo nice -n +18 $PORTS/bin/port"
 242     }
 243     # put coreutils on the paths if /usr/local/opt/coreutils/libexec exists
 244     test -x /usr/local/opt/coreutils/libexec -a ! -L /usr/local/opt/coreutils/libexec && {
 245         # setup the PATH and MANPATH
 246         PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
 247         MANPATH="/usr/local/opt/coreutils/libexec/gnuman:$MANPATH"
 248     }
 249 fi
 250
 251 # ----------------------------------------------------------------------
 252 # ALIASES / FUNCTIONS
 253 # ----------------------------------------------------------------------
 254
 255 # 'ls' helpers
 256 alias ll="ls -l"
 257 alias l.="ls -d .*"
 258 alias ll.="ls -ld .*"
 259 alias lla="ls -la"
 260
 261 # use 'git diff --no-index' as a prettier 'diff' alternative (if available)
 262 test -n "$(type -P git)" && alias diff="git diff --no-index"
 263
 264 # alias 'vi' to 'vim' if Vim is installed
 265 vim="$(type -P vim)"
 266 test -n "$vim" && {
 267     alias vi='vim'
 268 }
 269 unset vim
 270
 271 # disk usage with human sizes and minimal depth
 272 alias du1='du -h --max-depth=1'
 273 alias fn='find . -name'
 274 alias hi='history | tail -20'
 275
 276 # for Solaris, use GNU versions of core utils
 277 if [ "$UNAME" = SunOS ]; then
 278     test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep"
 279     test -x /usr/gnu/bin/sed  && alias sed="/usr/gnu/bin/sed"
 280     test -x /usr/gnu/bin/awk  && alias awk="/usr/gnu/bin/awk"
 281     test -x /usr/xpg4/bin/sed  && alias sed="/usr/xpg4/bin/sed"
 282     test -x /usr/xpg4/bin/awk  && alias awk="/usr/xpg4/bin/awk"
 283 fi
 284
 285 # alias csh-style "rebash" to bash equivalent
 286 alias rehash="hash -r"
 287
 288 # set 'screen' window title
 289 settitle() {
 290     printf "\033k%s\033\\" "$@"
 291 }
 292
 293 # svn-wrapper
 294 alias svn=svn-wrapper
 295
 296 # ----------------------------------------------------------------------
 297 # BASH COMPLETION
 298 # ----------------------------------------------------------------------
 299
 300 test -z "$BASH_COMPLETION" && {
 301     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 302     test -n "$PS1" && test $bmajor -gt 1 && {
 303         # search for a bash_completion file to source
 304         for f in /usr/local/etc/bash_completion \
 305                  /usr/pkg/etc/bash_completion \
 306                  /opt/local/etc/bash_completion \
 307                  /etc/bash_completion
 308         do
 309             test -f $f && {
 310                 . $f
 311                 break
 312             }
 313         done
 314     }
 315     unset bash bmajor bminor
 316 }
 317
 318 # override and disable tilde expansion
 319 _expand() {
 320     return 0
 321 }
 322
 323 # ----------------------------------------------------------------------
 324 # LS AND DIRCOLORS
 325 # ----------------------------------------------------------------------
 326
 327 # we always pass these to ls(1)
 328 LS_COMMON="-p"
 329
 330 # if the dircolors utility is available, set that up for ls
 331 dircolors="$(type -P gdircolors dircolors | head -1)"
 332 test -n "$dircolors" && {
 333     COLORS=/etc/DIR_COLORS
 334     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 335     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 336     test ! -e "$COLORS"               && COLORS=
 337     # AIX (vx-track) has dircolors(1) but ls(1) doesn't support --color arg
 338     test "$UNAME" = "AIX"             && COLORS=
 339     eval `$dircolors --sh $COLORS`
 340 }
 341 unset dircolors
 342
 343 # enable color ls output if available
 344 test -n "$COLORS" &&
 345     LS_COMMON="--color=auto $LS_COMMON"
 346
 347 # setup the main ls alias if we've established common args
 348 test -n "$LS_COMMON" &&
 349     alias ls="command ls $LS_COMMON"
 350
 351 # setup color grep output if available
 352 if [ -n "$COLORS" ]; then
 353     case "$UNAME" in
 354         "SunOS")
 355             # for Solaris, use the GNU version of grep for color support
 356             test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep --color=always"
 357             ;;
 358         *)
 359             alias grep="command grep --color=always"
 360             ;;
 361     esac
 362     # older versions of grep only support a singular highlight color
 363     export GREP_COLOR='1;37;42'
 364     # newer versions of grep have more flexible color configuration
 365     export GREP_COLORS='fn=36:ln=1;33:ms=1;37;42'
 366 fi
 367
 368 # --------------------------------------------------------------------
 369 # MISC COMMANDS
 370 # --------------------------------------------------------------------
 371
 372 # push SSH public key to another box
 373 push_ssh_cert() {
 374     local _host
 375     test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096
 376     for _host in "$@";
 377     do
 378         echo $_host
 379         ssh $_host 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub
 380     done
 381 }
 382
 383 # --------------------------------------------------------------------
 384 # PATH MANIPULATION FUNCTIONS
 385 # --------------------------------------------------------------------
 386
 387 # Usage: pls [<var>]
 388 # List path entries of PATH or environment variable <var>.
 389 pls () { eval echo \$${1:-PATH} |tr : '\n'; }
 390
 391 # Usage: pshift [-n <num>] [<var>]
 392 # Shift <num> entries off the front of PATH or environment var <var>.
 393 # with the <var> option. Useful: pshift $(pwd)
 394 pshift () {
 395     local n=1
 396     [ "$1" = "-n" ] && { n=$(( $2 + 1 )); shift 2; }
 397     eval "${1:-PATH}='$(pls |tail -n +$n |tr '\n' :)'"
 398 }
 399
 400 # Usage: ppop [-n <num>] [<var>]
 401 # Pop <num> entries off the end of PATH or environment variable <var>.
 402 ppop () {
 403     local n=1 i=0
 404     [ "$1" = "-n" ] && { n=$2; shift 2; }
 405     while [ $i -lt $n ]
 406     do eval "${1:-PATH}='\${${1:-PATH}%:*}'"
 407        i=$(( i + 1 ))
 408     done
 409 }
 410
 411 # Usage: prm <path> [<var>]
 412 # Remove <path> from PATH or environment variable <var>.
 413 prm () { eval "${2:-PATH}='$(pls $2 |grep -v "^$1\$" |tr '\n' :)'"; }
 414
 415 # Usage: punshift <path> [<var>]
 416 # Shift <path> onto the beginning of PATH or environment variable <var>.
 417 punshift () { eval "${2:-PATH}='$1:$(eval echo \$${2:-PATH})'"; }
 418
 419 # Usage: ppush <path> [<var>]
 420 ppush () { eval "${2:-PATH}='$(eval echo \$${2:-PATH})':$1"; }
 421
 422 # Usage: puniq [<path>]
 423 # Remove duplicate entries from a PATH style value while retaining
 424 # the original order. Use PATH if no <path> is given.
 425 #
 426 # Example:
 427 #   $ puniq /usr/bin:/usr/local/bin:/usr/bin
 428 #   /usr/bin:/usr/local/bin
 429 puniq () {
 430     echo "$1" | tr : '\n' | nl | sort -u -k 2,2 | sort -n |
 431     cut -f 2- | tr '\n' :
 432 }
 433
 434 # -------------------------------------------------------------------
 435 # USER SHELL ENVIRONMENT
 436 # -------------------------------------------------------------------
 437
 438 # source ~/.shenv now if it exists
 439 test -r ~/.shenv &&
 440     . ~/.shenv
 441
 442 # condense PATH entries
 443 PATH=$(puniq "$PATH")
 444 MANPATH=$(puniq "$MANPATH")
 445
 446 # use the color prompt by default when interactive
 447 test -n "$PS1" &&
 448     prompt_color
 449
 450 # -------------------------------------------------------------------
 451 # MOTD / FORTUNE
 452 # -------------------------------------------------------------------
 453
 454 test -n "$INTERACTIVE" -a -n "$LOGIN" && {
 455     # get current uname and uptime (if exists on this host)
 456     # strip any leading whitespace from uname and uptime commands
 457     t_uname="$(test -n "`type -P uname`" && uname -npsr | sed -e 's/^\s+//')"
 458     t_uptime="$(test -n "`type -P uptime`" && uptime | sed -e 's/^\s+//')"
 459     if [ -n "$t_uname" ] || [ -n "$t_uptime" ]; then
 460         echo " --"
 461         test -n "$t_uname" && echo $t_uname
 462         test -n "$t_uptime" && echo $t_uptime
 463         echo " --"
 464     fi
 465     unset t_uname t_uptime
 466 }
 467
 468 # vim: ts=4 sts=4 shiftwidth=4 expandtab