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