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