.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 -Fir"
 133     MANPAGER="less -FiRs"
 134 else
 135     PAGER=more
 136     MANPAGER="$PAGER"
 137 fi
 138 export PAGER MANPAGER
 139
 140 # Ack
 141 ACK_PAGER="$PAGER"
 142 ACK_PAGER_COLOR="$PAGER"
 143
 144 # ----------------------------------------------------------------------
 145 # PROMPT
 146 # ----------------------------------------------------------------------
 147
 148 # http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 149
 150 if [ "$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     PS1="\[\033[0;90m\][${PS_C1}\u@\h\[\033[0m\]\[\033[0;90m\]:${PS_C2}\w\[\033[0;90m\]]${PS_P}\[\033[0m\] "
 190     PS2="> "
 191 }
 192
 193 # ----------------------------------------------------------------------
 194 # MACOS X / DARWIN SPECIFIC
 195 # ----------------------------------------------------------------------
 196
 197 if [ "$UNAME" = Darwin ]; then
 198     # put ports on the paths if /opt/local exists
 199     test -x /opt/local -a ! -L /opt/local && {
 200         PORTS=/opt/local
 201
 202         # setup the PATH and MANPATH
 203         PATH="$PORTS/bin:$PORTS/sbin:$PATH"
 204         MANPATH="$PORTS/share/man:$MANPATH"
 205
 206         # nice little port alias
 207         alias port="sudo nice -n +18 $PORTS/bin/port"
 208     }
 209 fi
 210
 211 # ----------------------------------------------------------------------
 212 # ALIASES / FUNCTIONS
 213 # ----------------------------------------------------------------------
 214
 215 # alias 'vi' to 'vim' if Vim is installed
 216 vim="$(type -P vim)"
 217 test -n "$vim" && {
 218     alias vi='vim'
 219 }
 220 unset vim
 221
 222 # disk usage with human sizes and minimal depth
 223 alias du1='du -h --max-depth=1'
 224 alias fn='find . -name'
 225 alias hi='history | tail -20'
 226
 227 # For Solaris, use GNU versions of grep and sed
 228 if [ "$UNAME" = SunOS ]; then
 229     test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep"
 230     test -x /usr/gnu/bin/sed  && alias sed="/usr/gnu/bin/sed"
 231 fi
 232
 233 # Alias csh-style "rebash" to bash equivalent
 234 alias rehash="hash -r"
 235
 236 # ----------------------------------------------------------------------
 237 # BASH COMPLETION
 238 # ----------------------------------------------------------------------
 239
 240 test -z "$BASH_COMPLETION" && {
 241     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 242     test -n "$PS1" && test $bmajor -gt 1 && {
 243         # search for a bash_completion file to source
 244         for f in /usr/local/etc/bash_completion \
 245                  /usr/pkg/etc/bash_completion \
 246                  /opt/local/etc/bash_completion \
 247                  /etc/bash_completion
 248         do
 249             test -f $f && {
 250                 . $f
 251                 break
 252             }
 253         done
 254     }
 255     unset bash bmajor bminor
 256 }
 257
 258 # override and disable tilde expansion
 259 _expand() {
 260     return 0
 261 }
 262
 263 # ----------------------------------------------------------------------
 264 # LS AND DIRCOLORS
 265 # ----------------------------------------------------------------------
 266
 267 # we always pass these to ls(1)
 268 unset LS_COMMON
 269 ## OS-specific options
 270 #case "$UNAME" in
 271 #    "Linux" ) LS_COMMON="--color=auto";;
 272 #    "Cygwin" ) LS_COMMON="--color=auto";;
 273 #    "Darwin" ) LS_COMMON="--color=auto";;
 274 #esac
 275
 276 # if the dircolors utility is available, set that up for ls
 277 dircolors="$(type -P gdircolors dircolors | head -1)"
 278 test -n "$dircolors" && {
 279     COLORS=/etc/DIR_COLORS
 280     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 281     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 282     test ! -e "$COLORS"               && COLORS=
 283     eval `$dircolors --sh $COLORS`
 284 }
 285 unset dircolors
 286
 287 # enable color ls output if available
 288 test -n "$COLORS" &&
 289     LS_COMMON="--color=auto $LS_COMMON"
 290
 291 # setup the main ls alias if we've established common args
 292 test -n "$LS_COMMON" &&
 293     alias ls="command ls $LS_COMMON"
 294
 295 # these use the ls aliases above
 296 alias ll="ls -l"
 297 alias l.="ls -d .*"
 298 alias ll.="ls -ld .*"
 299 alias lla="ls -la"
 300
 301 # setup color grep output if available
 302 if [ -n "$COLORS" ]; then
 303     case "$UNAME" in
 304         "SunOS")
 305             # For Solaris, use the GNU version of grep for color support
 306             test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep --color=auto"
 307             ;;
 308         *)
 309             alias grep="command grep --color=auto"
 310             ;;
 311     esac
 312 fi
 313
 314 # --------------------------------------------------------------------
 315 # MISC COMMANDS
 316 # --------------------------------------------------------------------
 317
 318 # push SSH public key to another box
 319 push_ssh_cert() {
 320     local _host
 321     test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096
 322     for _host in "$@";
 323     do
 324         echo $_host
 325         ssh $_host 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub
 326     done
 327 }
 328
 329 # --------------------------------------------------------------------
 330 # PATH MANIPULATION FUNCTIONS
 331 # --------------------------------------------------------------------
 332
 333 # Usage: pls [<var>]
 334 # List path entries of PATH or environment variable <var>.
 335 pls () { eval echo \$${1:-PATH} |tr : '\n'; }
 336
 337 # Usage: pshift [-n <num>] [<var>]
 338 # Shift <num> entries off the front of PATH or environment var <var>.
 339 # with the <var> option. Useful: pshift $(pwd)
 340 pshift () {
 341     local n=1
 342     [ "$1" = "-n" ] && { n=$(( $2 + 1 )); shift 2; }
 343     eval "${1:-PATH}='$(pls |tail -n +$n |tr '\n' :)'"
 344 }
 345
 346 # Usage: ppop [-n <num>] [<var>]
 347 # Pop <num> entries off the end of PATH or environment variable <var>.
 348 ppop () {
 349     local n=1 i=0
 350     [ "$1" = "-n" ] && { n=$2; shift 2; }
 351     while [ $i -lt $n ]
 352     do eval "${1:-PATH}='\${${1:-PATH}%:*}'"
 353        i=$(( i + 1 ))
 354     done
 355 }
 356
 357 # Usage: prm <path> [<var>]
 358 # Remove <path> from PATH or environment variable <var>.
 359 prm () { eval "${2:-PATH}='$(pls $2 |grep -v "^$1\$" |tr '\n' :)'"; }
 360
 361 # Usage: punshift <path> [<var>]
 362 # Shift <path> onto the beginning of PATH or environment variable <var>.
 363 punshift () { eval "${2:-PATH}='$1:$(eval echo \$${2:-PATH})'"; }
 364
 365 # Usage: ppush <path> [<var>]
 366 ppush () { eval "${2:-PATH}='$(eval echo \$${2:-PATH})':$1"; }
 367
 368 # Usage: puniq [<path>]
 369 # Remove duplicate entries from a PATH style value while retaining
 370 # the original order. Use PATH if no <path> is given.
 371 #
 372 # Example:
 373 #   $ puniq /usr/bin:/usr/local/bin:/usr/bin
 374 #   /usr/bin:/usr/local/bin
 375 puniq () {
 376     echo "$1" | tr : '\n' | nl | sort -u -k 2,2 | sort -n |
 377     cut -f 2- | tr '\n' : | sed -e 's/:$//' -e 's/^://'
 378 }
 379
 380 # -------------------------------------------------------------------
 381 # USER SHELL ENVIRONMENT
 382 # -------------------------------------------------------------------
 383
 384 # source ~/.shenv now if it exists
 385 test -r ~/.shenv &&
 386     . ~/.shenv
 387
 388 # condense PATH entries
 389 PATH=$(puniq "$PATH")
 390 MANPATH=$(puniq "$MANPATH")
 391
 392 # Use the color prompt by default when interactive
 393 test -n "$PS1" &&
 394     prompt_color
 395
 396 # -------------------------------------------------------------------
 397 # MOTD / FORTUNE
 398 # -------------------------------------------------------------------
 399
 400 test -n "$INTERACTIVE" -a -n "$LOGIN" && {
 401     # Get current uname and uptime (if exists on this host)
 402     # Strip any leading whitespace from uname and uptime commands
 403     t_uname="$(test -n "`type -P uname`" && uname -npsr | sed -e 's/^\s+//')"
 404     t_uptime="$(test -n "`type -P uptime`" && uptime | sed -e 's/^\s+//')"
 405     if [ -n "$t_uname" ] || [ -n "$t_uptime" ]; then
 406         echo " --"
 407         test -n "$t_uname" && echo $t_uname
 408         test -n "$t_uptime" && echo $t_uptime
 409         echo " --"
 410     fi
 411     unset t_uname t_uptime
 412 }
 413
 414 # vim: ts=4 sts=4 shiftwidth=4 expandtab