.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 you have it
  78 test -d "$HOME/bin" &&
  79     PATH="$HOME/bin:$PATH"
  80
  81 # ----------------------------------------------------------------------
  82 # ENVIRONMENT CONFIGURATION
  83 # ----------------------------------------------------------------------
  84
  85 # detect interactive shell
  86 case "$-" in
  87     *i*) INTERACTIVE=yes ;;
  88     *)   unset INTERACTIVE ;;
  89 esac
  90
  91 # detect login shell
  92 case "$0" in
  93    -*) LOGIN=yes ;;
  94    *)  unset LOGIN ;;
  95 esac
  96
  97 # enable en_US locale w/ utf-8 encodings if not already
  98 # configured
  99 : ${LANG:="en_US.UTF-8"}
 100 : ${LANGUAGE:="en"}
 101 : ${LC_CTYPE:="en_US.UTF-8"}
 102 : ${LC_ALL:="en_US.UTF-8"}
 103 export LANG LANGUAGE LC_CTYPE LC_ALL
 104
 105 # ignore backups, CVS directories, python bytecode, vim swap files
 106 FIGNORE="~:CVS:#:.pyc:.swp:.swa:apache-solr-*"
 107
 108 # history stuff
 109 HISTCONTROL=ignoreboth
 110 HISTFILESIZE=10000
 111 HISTSIZE=10000
 112
 113 # ----------------------------------------------------------------------
 114 # PAGER / EDITOR
 115 # ----------------------------------------------------------------------
 116
 117 # See what we have to work with ...
 118 HAVE_VIM=$(command -v vim)
 119
 120 # EDITOR
 121 test -n "$HAVE_VIM" &&
 122     EDITOR=vim ||
 123     EDITOR=vi
 124 export EDITOR
 125
 126 # PAGER
 127 if test -n "$(command -v less)" ; then
 128     PAGER="less -Fir"
 129     MANPAGER="less -FiRs"
 130 else
 131     PAGER=more
 132     MANPAGER="$PAGER"
 133 fi
 134 export PAGER MANPAGER
 135
 136 # Ack
 137 ACK_PAGER="$PAGER"
 138 ACK_PAGER_COLOR="$PAGER"
 139
 140 # ----------------------------------------------------------------------
 141 # PROMPT
 142 # ----------------------------------------------------------------------
 143
 144 # http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 145
 146 if [ "$UID" = 0 ]; then
 147     # root
 148     PS_C1="\[\033[1;31m\]"  # red
 149     PS_C2="\[\033[0;37m\]"  # grey
 150     PS_P="#"
 151 else
 152     case "$UNAME" in
 153         Cygwin)
 154             PS_C1="\[\033[0;32m\]"  # green
 155             PS_C2="\[\033[0;37m\]"  # grey
 156             ;;
 157         Darwin)
 158             PS_C1="\[\033[1;97m\]"  # white
 159             PS_C2="\[\033[0;37m\]"  # grey
 160             ;;
 161         SunOS)
 162             PS_C1="\[\033[1;96m\]"  # cyan
 163             PS_C2="\[\033[0;36m\]"  # cyan
 164             ;;
 165         *)
 166             PS_C1="\[\033[1;93m\]"  # yellow
 167             PS_C2="\[\033[0;33m\]"  # brown
 168     esac
 169     PS_P="\$"
 170 fi
 171
 172 prompt_simple() {
 173     unset PROMPT_COMMAND
 174     PS1="[\u@\h:\w]\$ "
 175     PS2="> "
 176 }
 177
 178 prompt_compact() {
 179     unset PROMPT_COMMAND
 180     PS1="${PS_C1}${PS_P}\[\033[0m\] "
 181     PS2="> "
 182 }
 183
 184 prompt_color() {
 185     PS1="\[\033[0;90m\][${PS_C1}\u@\h\[\033[0m\]\[\033[0;90m\]:${PS_C2}\w\[\033[0;90m\]]${PS_P}\[\033[0m\] "
 186     PS2="> "
 187 }
 188
 189 # ----------------------------------------------------------------------
 190 # MACOS X / DARWIN SPECIFIC
 191 # ----------------------------------------------------------------------
 192
 193 if [ "$UNAME" = Darwin ]; then
 194     # put ports on the paths if /opt/local exists
 195     test -x /opt/local -a ! -L /opt/local && {
 196         PORTS=/opt/local
 197
 198         # setup the PATH and MANPATH
 199         PATH="$PORTS/bin:$PORTS/sbin:$PATH"
 200         MANPATH="$PORTS/share/man:$MANPATH"
 201
 202         # nice little port alias
 203         alias port="sudo nice -n +18 $PORTS/bin/port"
 204     }
 205 fi
 206
 207 # ----------------------------------------------------------------------
 208 # ALIASES / FUNCTIONS
 209 # ----------------------------------------------------------------------
 210
 211 # alias 'vi' to 'vim' if Vim is installed
 212 vim="$(type -P vim)"
 213 test -n "$vim" && {
 214     alias vi='vim'
 215 }
 216 unset vim
 217
 218 # disk usage with human sizes and minimal depth
 219 alias du1='du -h --max-depth=1'
 220 alias fn='find . -name'
 221 alias hi='history | tail -20'
 222
 223 # For Solaris, use GNU versions of grep and sed
 224 if [ "$UNAME" = SunOS ]; then
 225     test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep"
 226     test -x /usr/gnu/bin/sed  && alias sed="/usr/gnu/bin/sed"
 227 fi
 228
 229 # Alias csh-style "rebash" to bash equivalent
 230 alias rehash="hash -r"
 231
 232 # ----------------------------------------------------------------------
 233 # BASH COMPLETION
 234 # ----------------------------------------------------------------------
 235
 236 test -z "$BASH_COMPLETION" && {
 237     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 238     test -n "$PS1" && test $bmajor -gt 1 && {
 239         # search for a bash_completion file to source
 240         for f in /usr/local/etc/bash_completion \
 241                  /usr/pkg/etc/bash_completion \
 242                  /opt/local/etc/bash_completion \
 243                  /etc/bash_completion
 244         do
 245             test -f $f && {
 246                 . $f
 247                 break
 248             }
 249         done
 250     }
 251     unset bash bmajor bminor
 252 }
 253
 254 # override and disable tilde expansion
 255 _expand() {
 256     return 0
 257 }
 258
 259 # ----------------------------------------------------------------------
 260 # LS AND DIRCOLORS
 261 # ----------------------------------------------------------------------
 262
 263 # we always pass these to ls(1)
 264 unset LS_COMMON
 265 ## OS-specific options
 266 #case "$UNAME" in
 267 #    "Linux" ) LS_COMMON="--color=auto";;
 268 #    "Cygwin" ) LS_COMMON="--color=auto";;
 269 #    "Darwin" ) LS_COMMON="--color=auto";;
 270 #esac
 271
 272 # if the dircolors utility is available, set that up for ls
 273 dircolors="$(type -P gdircolors dircolors | head -1)"
 274 test -n "$dircolors" && {
 275     COLORS=/etc/DIR_COLORS
 276     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 277     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 278     test ! -e "$COLORS"               && COLORS=
 279     eval `$dircolors --sh $COLORS`
 280 }
 281 unset dircolors
 282
 283 # enable color ls output if available
 284 test -n "$COLORS" &&
 285     LS_COMMON="--color=auto $LS_COMMON"
 286
 287 # setup the main ls alias if we've established common args
 288 test -n "$LS_COMMON" &&
 289     alias ls="command ls $LS_COMMON"
 290
 291 # these use the ls aliases above
 292 alias ll="ls -l"
 293 alias l.="ls -d .*"
 294 alias ll.="ls -ld .*"
 295 alias lla="ls -la"
 296
 297 # setup color grep output if available
 298 if [ -n "$COLORS" ]; then
 299     case "$UNAME" in
 300         "SunOS")
 301             # For Solaris, use the GNU version of grep for color support
 302             test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep --color=auto"
 303             ;;
 304         *)
 305             alias grep="command grep --color=auto"
 306             ;;
 307     esac
 308 fi
 309
 310 # --------------------------------------------------------------------
 311 # MISC COMMANDS
 312 # --------------------------------------------------------------------
 313
 314 # push SSH public key to another box
 315 push_ssh_cert() {
 316     local _host
 317     test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096
 318     for _host in "$@";
 319     do
 320         echo $_host
 321         ssh $_host 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub
 322     done
 323 }
 324
 325 # --------------------------------------------------------------------
 326 # PATH MANIPULATION FUNCTIONS
 327 # --------------------------------------------------------------------
 328
 329 # Usage: pls [<var>]
 330 # List path entries of PATH or environment variable <var>.
 331 pls () { eval echo \$${1:-PATH} |tr : '\n'; }
 332
 333 # Usage: pshift [-n <num>] [<var>]
 334 # Shift <num> entries off the front of PATH or environment var <var>.
 335 # with the <var> option. Useful: pshift $(pwd)
 336 pshift () {
 337     local n=1
 338     [ "$1" = "-n" ] && { n=$(( $2 + 1 )); shift 2; }
 339     eval "${1:-PATH}='$(pls |tail -n +$n |tr '\n' :)'"
 340 }
 341
 342 # Usage: ppop [-n <num>] [<var>]
 343 # Pop <num> entries off the end of PATH or environment variable <var>.
 344 ppop () {
 345     local n=1 i=0
 346     [ "$1" = "-n" ] && { n=$2; shift 2; }
 347     while [ $i -lt $n ]
 348     do eval "${1:-PATH}='\${${1:-PATH}%:*}'"
 349        i=$(( i + 1 ))
 350     done
 351 }
 352
 353 # Usage: prm <path> [<var>]
 354 # Remove <path> from PATH or environment variable <var>.
 355 prm () { eval "${2:-PATH}='$(pls $2 |grep -v "^$1\$" |tr '\n' :)'"; }
 356
 357 # Usage: punshift <path> [<var>]
 358 # Shift <path> onto the beginning of PATH or environment variable <var>.
 359 punshift () { eval "${2:-PATH}='$1:$(eval echo \$${2:-PATH})'"; }
 360
 361 # Usage: ppush <path> [<var>]
 362 ppush () { eval "${2:-PATH}='$(eval echo \$${2:-PATH})':$1"; }
 363
 364 # Usage: puniq [<path>]
 365 # Remove duplicate entries from a PATH style value while retaining
 366 # the original order. Use PATH if no <path> is given.
 367 #
 368 # Example:
 369 #   $ puniq /usr/bin:/usr/local/bin:/usr/bin
 370 #   /usr/bin:/usr/local/bin
 371 puniq () {
 372     echo "$1" | tr : '\n' | nl | sort -u -k 2,2 | sort -n |
 373     cut -f 2- | tr '\n' : | sed -e 's/:$//' -e 's/^://'
 374 }
 375
 376 # -------------------------------------------------------------------
 377 # USER SHELL ENVIRONMENT
 378 # -------------------------------------------------------------------
 379
 380 # source ~/.shenv now if it exists
 381 test -r ~/.shenv &&
 382     . ~/.shenv
 383
 384 # condense PATH entries
 385 PATH=$(puniq $PATH)
 386 MANPATH=$(puniq $MANPATH)
 387
 388 # Use the color prompt by default when interactive
 389 test -n "$PS1" &&
 390     prompt_color
 391
 392 # -------------------------------------------------------------------
 393 # MOTD / FORTUNE
 394 # -------------------------------------------------------------------
 395
 396 test -n "$INTERACTIVE" -a -n "$LOGIN" && {
 397     # Get current uname and uptime (if exists on this host)
 398     # Strip any leading whitespace from uname and uptime commands
 399     t_uname="$(test -n "`type -P uname`" && uname -npsr | sed -e 's/^\s+//')"
 400     t_uptime="$(test -n "`type -P uptime`" && uptime | sed -e 's/^\s+//')"
 401     if [ -n "$t_uname" ] || [ -n "$t_uptime" ]; then
 402         echo " --"
 403         test -n "$t_uname" && echo $t_uname
 404         test -n "$t_uptime" && echo $t_uptime
 405         echo " --"
 406     fi
 407     unset t_uname t_uptime
 408 }
 409
 410 # vim: ts=4 sts=4 shiftwidth=4 expandtab