.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 sbin's 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 /opt/csw/* on PATH if exists (OpenCSW Solaris packages)
  78 test -d "/opt/csw" &&
  79     PATH="/opt/csw/sbin:/opt/csw/bin:$PATH"
  80
  81 # put ~/bin on PATH if exists
  82 test -d "$HOME/bin" &&
  83     PATH="$HOME/bin:$PATH"
  84
  85 # put ~/sbin on PATH if exists
  86 test -d "$HOME/sbin" &&
  87     PATH="$HOME/sbin:$PATH"
  88
  89 # ----------------------------------------------------------------------
  90 # ENVIRONMENT CONFIGURATION
  91 # ----------------------------------------------------------------------
  92
  93 # detect interactive shell
  94 case "$-" 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="$PAGER"
 143 fi
 144 export PAGER MANPAGER
 145
 146 # Ack
 147 ACK_PAGER="$PAGER"
 148 ACK_PAGER_COLOR="$PAGER"
 149
 150 # ----------------------------------------------------------------------
 151 # PROMPT
 152 # ----------------------------------------------------------------------
 153
 154 # http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 155
 156 if [ "$UID" = 0 ]; then
 157     # root
 158     PS_C1="\[\033[1;31m\]"  # red
 159     PS_C2="\[\033[0;37m\]"  # grey
 160     PS_P="#"
 161 else
 162     case "$UNAME" in
 163         Cygwin)
 164             PS_C1="\[\033[0;32m\]"  # green
 165             PS_C2="\[\033[0;37m\]"  # grey
 166             ;;
 167         Darwin)
 168             PS_C1="\[\033[1;97m\]"  # white
 169             PS_C2="\[\033[0;37m\]"  # grey
 170             ;;
 171         SunOS)
 172             PS_C1="\[\033[1;96m\]"  # cyan
 173             PS_C2="\[\033[0;36m\]"  # cyan
 174             ;;
 175         *)
 176             PS_C1="\[\033[1;93m\]"  # yellow
 177             PS_C2="\[\033[0;33m\]"  # brown
 178     esac
 179     PS_P="\$"
 180 fi
 181
 182 prompt_simple() {
 183     unset PROMPT_COMMAND
 184     PS1="[\u@\h:\w]\$ "
 185     PS2="> "
 186 }
 187
 188 prompt_compact() {
 189     unset PROMPT_COMMAND
 190     PS1="${PS_C1}${PS_P}\[\033[0m\] "
 191     PS2="> "
 192 }
 193
 194 prompt_color() {
 195     PS1="\[\033[0;90m\][${PS_C1}\u@\h\[\033[0m\]\[\033[0;90m\]:${PS_C2}\w\[\033[0;90m\]]${PS_P}\[\033[0m\] "
 196     PS2="> "
 197 }
 198
 199 # ----------------------------------------------------------------------
 200 # MACOS X / DARWIN SPECIFIC
 201 # ----------------------------------------------------------------------
 202
 203 if [ "$UNAME" = Darwin ]; then
 204     # put ports on the paths if /opt/local exists
 205     test -x /opt/local -a ! -L /opt/local && {
 206         PORTS=/opt/local
 207
 208         # setup the PATH and MANPATH
 209         PATH="$PORTS/bin:$PORTS/sbin:$PATH"
 210         MANPATH="$PORTS/share/man:$MANPATH"
 211
 212         # nice little port alias
 213         alias port="sudo nice -n +18 $PORTS/bin/port"
 214     }
 215 fi
 216
 217 # ----------------------------------------------------------------------
 218 # ALIASES / FUNCTIONS
 219 # ----------------------------------------------------------------------
 220
 221 # alias 'vi' to 'vim' if Vim is installed
 222 vim="$(type -P vim)"
 223 test -n "$vim" && {
 224     alias vi='vim'
 225 }
 226 unset vim
 227
 228 # disk usage with human sizes and minimal depth
 229 alias du1='du -h --max-depth=1'
 230 alias fn='find . -name'
 231 alias hi='history | tail -20'
 232
 233 # For Solaris, use GNU versions of grep and sed
 234 if [ "$UNAME" = SunOS ]; then
 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 fi
 238
 239 # Alias csh-style "rebash" to bash equivalent
 240 alias rehash="hash -r"
 241
 242 # ----------------------------------------------------------------------
 243 # BASH COMPLETION
 244 # ----------------------------------------------------------------------
 245
 246 test -z "$BASH_COMPLETION" && {
 247     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 248     test -n "$PS1" && test $bmajor -gt 1 && {
 249         # search for a bash_completion file to source
 250         for f in /usr/local/etc/bash_completion \
 251                  /usr/pkg/etc/bash_completion \
 252                  /opt/local/etc/bash_completion \
 253                  /etc/bash_completion
 254         do
 255             test -f $f && {
 256                 . $f
 257                 break
 258             }
 259         done
 260     }
 261     unset bash bmajor bminor
 262 }
 263
 264 # override and disable tilde expansion
 265 _expand() {
 266     return 0
 267 }
 268
 269 # ----------------------------------------------------------------------
 270 # LS AND DIRCOLORS
 271 # ----------------------------------------------------------------------
 272
 273 # we always pass these to ls(1)
 274 unset LS_COMMON
 275 ## OS-specific options
 276 #case "$UNAME" in
 277 #    "Linux" ) LS_COMMON="--color=auto";;
 278 #    "Cygwin" ) LS_COMMON="--color=auto";;
 279 #    "Darwin" ) LS_COMMON="--color=auto";;
 280 #esac
 281
 282 # if the dircolors utility is available, set that up for ls
 283 dircolors="$(type -P gdircolors dircolors | head -1)"
 284 test -n "$dircolors" && {
 285     COLORS=/etc/DIR_COLORS
 286     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 287     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 288     test ! -e "$COLORS"               && COLORS=
 289     eval `$dircolors --sh $COLORS`
 290 }
 291 unset dircolors
 292
 293 # enable color ls output if available
 294 test -n "$COLORS" &&
 295     LS_COMMON="--color=auto $LS_COMMON"
 296
 297 # setup the main ls alias if we've established common args
 298 test -n "$LS_COMMON" &&
 299     alias ls="command ls $LS_COMMON"
 300
 301 # these use the ls aliases above
 302 alias ll="ls -l"
 303 alias l.="ls -d .*"
 304 alias ll.="ls -ld .*"
 305 alias lla="ls -la"
 306
 307 # setup color grep output if available
 308 if [ -n "$COLORS" ]; then
 309     case "$UNAME" in
 310         "SunOS")
 311             # For Solaris, use the GNU version of grep for color support
 312             test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep --color=always"
 313             ;;
 314         *)
 315             alias grep="command grep --color=always"
 316             ;;
 317     esac
 318     # older versions of grep only support a singular highlight color
 319     export GREP_COLOR='1;37;42'
 320     # newer versions of grep have more flexible color configuration
 321     export GREP_COLORS='fn=36:ln=1;33:ms=1;37;42'
 322 fi
 323
 324 # --------------------------------------------------------------------
 325 # MISC COMMANDS
 326 # --------------------------------------------------------------------
 327
 328 # push SSH public key to another box
 329 push_ssh_cert() {
 330     local _host
 331     test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096
 332     for _host in "$@";
 333     do
 334         echo $_host
 335         ssh $_host 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub
 336     done
 337 }
 338
 339 # --------------------------------------------------------------------
 340 # PATH MANIPULATION FUNCTIONS
 341 # --------------------------------------------------------------------
 342
 343 # Usage: pls [<var>]
 344 # List path entries of PATH or environment variable <var>.
 345 pls () { eval echo \$${1:-PATH} |tr : '\n'; }
 346
 347 # Usage: pshift [-n <num>] [<var>]
 348 # Shift <num> entries off the front of PATH or environment var <var>.
 349 # with the <var> option. Useful: pshift $(pwd)
 350 pshift () {
 351     local n=1
 352     [ "$1" = "-n" ] && { n=$(( $2 + 1 )); shift 2; }
 353     eval "${1:-PATH}='$(pls |tail -n +$n |tr '\n' :)'"
 354 }
 355
 356 # Usage: ppop [-n <num>] [<var>]
 357 # Pop <num> entries off the end of PATH or environment variable <var>.
 358 ppop () {
 359     local n=1 i=0
 360     [ "$1" = "-n" ] && { n=$2; shift 2; }
 361     while [ $i -lt $n ]
 362     do eval "${1:-PATH}='\${${1:-PATH}%:*}'"
 363        i=$(( i + 1 ))
 364     done
 365 }
 366
 367 # Usage: prm <path> [<var>]
 368 # Remove <path> from PATH or environment variable <var>.
 369 prm () { eval "${2:-PATH}='$(pls $2 |grep -v "^$1\$" |tr '\n' :)'"; }
 370
 371 # Usage: punshift <path> [<var>]
 372 # Shift <path> onto the beginning of PATH or environment variable <var>.
 373 punshift () { eval "${2:-PATH}='$1:$(eval echo \$${2:-PATH})'"; }
 374
 375 # Usage: ppush <path> [<var>]
 376 ppush () { eval "${2:-PATH}='$(eval echo \$${2:-PATH})':$1"; }
 377
 378 # Usage: puniq [<path>]
 379 # Remove duplicate entries from a PATH style value while retaining
 380 # the original order. Use PATH if no <path> is given.
 381 #
 382 # Example:
 383 #   $ puniq /usr/bin:/usr/local/bin:/usr/bin
 384 #   /usr/bin:/usr/local/bin
 385 puniq () {
 386     echo "$1" | tr : '\n' | nl | sort -u -k 2,2 | sort -n |
 387     cut -f 2- | tr '\n' : | sed -e 's/:$//' -e 's/^://'
 388 }
 389
 390 # -------------------------------------------------------------------
 391 # USER SHELL ENVIRONMENT
 392 # -------------------------------------------------------------------
 393
 394 # source ~/.shenv now if it exists
 395 test -r ~/.shenv &&
 396     . ~/.shenv
 397
 398 # condense PATH entries
 399 PATH=$(puniq "$PATH")
 400 MANPATH=$(puniq "$MANPATH")
 401
 402 # Use the color prompt by default when interactive
 403 test -n "$PS1" &&
 404     prompt_color
 405
 406 # -------------------------------------------------------------------
 407 # MOTD / FORTUNE
 408 # -------------------------------------------------------------------
 409
 410 test -n "$INTERACTIVE" -a -n "$LOGIN" && {
 411     # Get current uname and uptime (if exists on this host)
 412     # Strip any leading whitespace from uname and uptime commands
 413     t_uname="$(test -n "`type -P uname`" && uname -npsr | sed -e 's/^\s+//')"
 414     t_uptime="$(test -n "`type -P uptime`" && uptime | sed -e 's/^\s+//')"
 415     if [ -n "$t_uname" ] || [ -n "$t_uptime" ]; then
 416         echo " --"
 417         test -n "$t_uname" && echo $t_uname
 418         test -n "$t_uptime" && echo $t_uptime
 419         echo " --"
 420     fi
 421     unset t_uname t_uptime
 422 }
 423
 424 # vim: ts=4 sts=4 shiftwidth=4 expandtab