.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 # the basics
   7 : ${HOME=~}
   8 : ${LOGNAME=$(id -un)}
   9 : ${UNAME=$(uname)}
  10 # strip OS type and version under Cygwin (e.g. CYGWIN_NT-5.1 => Cygwin)
  11 UNAME=${UNAME/CYGWIN_*/Cygwin}
  12
  13 # complete hostnames from this file
  14 HOSTFILE=~/.ssh/known_hosts
  15
  16 # readline config
  17 INPUTRC=~/.inputrc
  18
  19 # if current $TERM isn't valid, fall-back to TERM=xterm-color or TERM=xterm
  20 case $(tput colors 2>&1) in
  21     tput* )
  22         export TERM=xterm-color
  23         case $(tput colors 2>&1) in
  24             tput* )
  25                 export TERM=xterm
  26                 ;;
  27         esac
  28         ;;
  29 esac
  30
  31 if [ "$UNAME" = "Darwin" ]; then
  32     # Fink init, for OSX
  33     test -r /sw/bin/init.sh &&
  34         source /sw/bin/init.sh
  35 fi
  36
  37 # ----------------------------------------------------------------------
  38 #  SHELL OPTIONS
  39 # ----------------------------------------------------------------------
  40
  41 # bring in system bashrc
  42 test -r /etc/bashrc &&
  43     . /etc/bashrc
  44
  45 # notify of bg job completion immediately
  46 set -o notify
  47
  48 # shell opts. see bash(1) for details
  49 shopt -s cdspell >/dev/null 2>&1
  50 shopt -s extglob >/dev/null 2>&1
  51 shopt -s histappend >/dev/null 2>&1
  52 shopt -s hostcomplete >/dev/null 2>&1
  53 shopt -s interactive_comments >/dev/null 2>&1
  54 shopt -u mailwarn >/dev/null 2>&1
  55 shopt -s no_empty_cmd_completion >/dev/null 2>&1
  56
  57 # don't check for new mail
  58 unset MAILCHECK
  59
  60 # disable core dumps
  61 ulimit -S -c 0
  62
  63 # default umask
  64 umask 0022
  65
  66 # ----------------------------------------------------------------------
  67 # PATH
  68 # ----------------------------------------------------------------------
  69
  70 # we want the various sbins on the path along with /usr/local/bin
  71 PATH="$PATH:/usr/local/sbin:/usr/sbin:/sbin"
  72 PATH="/usr/local/bin:$PATH"
  73
  74 # put ~/bin on PATH if you have it
  75 test -d "$HOME/bin" &&
  76     PATH="$HOME/bin:$PATH"
  77
  78 # ----------------------------------------------------------------------
  79 # ENVIRONMENT CONFIGURATION
  80 # ----------------------------------------------------------------------
  81
  82 # detect interactive shell
  83 case "$-" in
  84     *i*) INTERACTIVE=yes ;;
  85     *)   unset INTERACTIVE ;;
  86 esac
  87
  88 # detect login shell
  89 case "$0" in
  90    -*) LOGIN=yes ;;
  91    *)  unset LOGIN ;;
  92 esac
  93
  94 # enable en_US locale w/ utf-8 encodings if not already
  95 # configured
  96 : ${LANG:="en_US.UTF-8"}
  97 : ${LANGUAGE:="en"}
  98 : ${LC_CTYPE:="en_US.UTF-8"}
  99 : ${LC_ALL:="en_US.UTF-8"}
 100 export LANG LANGUAGE LC_CTYPE LC_ALL
 101
 102 # ignore backups, CVS directories, python bytecode, vim swap files
 103 FIGNORE="~:CVS:#:.pyc:.swp:.swa:apache-solr-*"
 104
 105 # history stuff
 106 HISTCONTROL=ignoreboth
 107 HISTFILESIZE=10000
 108 HISTSIZE=10000
 109
 110 # ----------------------------------------------------------------------
 111 # PAGER / EDITOR
 112 # ----------------------------------------------------------------------
 113
 114 # See what we have to work with ...
 115 HAVE_VIM=$(command -v vim)
 116
 117 # EDITOR
 118 test -n "$HAVE_VIM" &&
 119     EDITOR=vim ||
 120     EDITOR=vi
 121 export EDITOR
 122
 123 # PAGER
 124 if test -n "$(command -v less)" ; then
 125     PAGER="less -Fir"
 126     MANPAGER="less -FiRs"
 127 else
 128     PAGER=more
 129     MANPAGER="$PAGER"
 130 fi
 131 export PAGER MANPAGER
 132
 133 # Ack
 134 ACK_PAGER="$PAGER"
 135 ACK_PAGER_COLOR="$PAGER"
 136
 137 # ----------------------------------------------------------------------
 138 # PROMPT
 139 # ----------------------------------------------------------------------
 140
 141 # http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 142
 143 if [ "$UID" = 0 ]; then
 144     # root
 145     PS_C1="\[\033[1;31m\]"  # red
 146     PS_C2="\[\033[0;37m\]"  # grey
 147     PS_P="#"
 148 else
 149     case "$UNAME" in
 150         Cygwin)
 151             PS_C1="\[\033[0;32m\]"  # green
 152             PS_C2="\[\033[0;37m\]"  # grey
 153             ;;
 154         Darwin)
 155             PS_C1="\[\033[1;97m\]"  # white
 156             PS_C2="\[\033[0;37m\]"  # grey
 157             ;;
 158         SunOS)
 159             PS_C1="\[\033[1;96m\]"  # cyan
 160             PS_C2="\[\033[0;36m\]"  # cyan
 161             ;;
 162         *)
 163             PS_C1="\[\033[1;93m\]"  # yellow
 164             PS_C2="\[\033[0;33m\]"  # brown
 165     esac
 166     PS_P="\$"
 167 fi
 168
 169 prompt_simple() {
 170     unset PROMPT_COMMAND
 171     PS1="[\u@\h:\w]\$ "
 172     PS2="> "
 173 }
 174
 175 prompt_compact() {
 176     unset PROMPT_COMMAND
 177     PS1="${PS_C1}${PS_P}\[\033[0m\] "
 178     PS2="> "
 179 }
 180
 181 prompt_color() {
 182     PS1="\[\033[0;90m\][${PS_C1}\u@\h\[\033[0m\]\[\033[0;90m\]:${PS_C2}\w\[\033[0;90m\]]${PS_P}\[\033[0m\] "
 183     PS2="> "
 184 }
 185
 186 # ----------------------------------------------------------------------
 187 # MACOS X / DARWIN SPECIFIC
 188 # ----------------------------------------------------------------------
 189
 190 if [ "$UNAME" = Darwin ]; then
 191     # put ports on the paths if /opt/local exists
 192     test -x /opt/local -a ! -L /opt/local && {
 193         PORTS=/opt/local
 194
 195         # setup the PATH and MANPATH
 196         PATH="$PORTS/bin:$PORTS/sbin:$PATH"
 197         MANPATH="$PORTS/share/man:$MANPATH"
 198
 199         # nice little port alias
 200         alias port="sudo nice -n +18 $PORTS/bin/port"
 201     }
 202 fi
 203
 204 # ----------------------------------------------------------------------
 205 # ALIASES / FUNCTIONS
 206 # ----------------------------------------------------------------------
 207
 208 # alias 'vi' to 'vim' if Vim is installed
 209 vim="$(type -P vim)"
 210 test -n "$vim" && {
 211     alias vi='vim'
 212 }
 213 unset vim
 214
 215 # disk usage with human sizes and minimal depth
 216 alias du1='du -h --max-depth=1'
 217 alias fn='find . -name'
 218 alias hi='history | tail -20'
 219
 220 # For Solaris, use GNU versions of grep and sed
 221 if [ "$UNAME" = SunOS ]; then
 222     test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep"
 223     test -x /usr/gnu/bin/sed  && alias sed="/usr/gnu/bin/sed"
 224 fi
 225
 226 # ----------------------------------------------------------------------
 227 # BASH COMPLETION
 228 # ----------------------------------------------------------------------
 229
 230 test -z "$BASH_COMPLETION" && {
 231     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 232     test -n "$PS1" && test $bmajor -gt 1 && {
 233         # search for a bash_completion file to source
 234         for f in /usr/local/etc/bash_completion \
 235                  /usr/pkg/etc/bash_completion \
 236                  /opt/local/etc/bash_completion \
 237                  /etc/bash_completion
 238         do
 239             test -f $f && {
 240                 . $f
 241                 break
 242             }
 243         done
 244     }
 245     unset bash bmajor bminor
 246 }
 247
 248 # override and disable tilde expansion
 249 _expand() {
 250     return 0
 251 }
 252
 253 # ----------------------------------------------------------------------
 254 # LS AND DIRCOLORS
 255 # ----------------------------------------------------------------------
 256
 257 # we always pass these to ls(1)
 258 unset LS_COMMON
 259 ## OS-specific options
 260 #case "$UNAME" in
 261 #    "Linux" ) LS_COMMON="--color=auto";;
 262 #    "Cygwin" ) LS_COMMON="--color=auto";;
 263 #    "Darwin" ) LS_COMMON="--color=auto";;
 264 #esac
 265
 266 # if the dircolors utility is available, set that up for ls
 267 dircolors="$(type -P gdircolors dircolors | head -1)"
 268 test -n "$dircolors" && {
 269     COLORS=/etc/DIR_COLORS
 270     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 271     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 272     test ! -e "$COLORS"               && COLORS=
 273     eval `$dircolors --sh $COLORS`
 274 }
 275 unset dircolors
 276
 277 # enable color ls output if available
 278 test -n "$COLORS" &&
 279     LS_COMMON="--color=auto $LS_COMMON"
 280
 281 # setup the main ls alias if we've established common args
 282 test -n "$LS_COMMON" &&
 283     alias ls="command ls $LS_COMMON"
 284
 285 # these use the ls aliases above
 286 alias ll="ls -l"
 287 alias l.="ls -d .*"
 288 alias ll.="ls -ld .*"
 289 alias lla="ls -la"
 290
 291 # setup color grep output if available
 292 if [ -n "$COLORS" ]; then
 293     case "$UNAME" in
 294         "SunOS")
 295             # For Solaris, use the GNU version of grep for color support
 296             test -x /usr/gnu/bin/grep && alias grep="/usr/gnu/bin/grep --color=auto"
 297             ;;
 298         *)
 299             alias grep="command grep --color=auto"
 300             ;;
 301     esac
 302 fi
 303
 304 # --------------------------------------------------------------------
 305 # MISC COMMANDS
 306 # --------------------------------------------------------------------
 307
 308 # push SSH public key to another box
 309 push_ssh_cert() {
 310     local _host
 311     test -f ~/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096
 312     for _host in "$@";
 313     do
 314         echo $_host
 315         ssh $_host 'cat >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub
 316     done
 317 }
 318
 319 # --------------------------------------------------------------------
 320 # PATH MANIPULATION FUNCTIONS
 321 # --------------------------------------------------------------------
 322
 323 # Usage: pls [<var>]
 324 # List path entries of PATH or environment variable <var>.
 325 pls () { eval echo \$${1:-PATH} |tr : '\n'; }
 326
 327 # Usage: pshift [-n <num>] [<var>]
 328 # Shift <num> entries off the front of PATH or environment var <var>.
 329 # with the <var> option. Useful: pshift $(pwd)
 330 pshift () {
 331     local n=1
 332     [ "$1" = "-n" ] && { n=$(( $2 + 1 )); shift 2; }
 333     eval "${1:-PATH}='$(pls |tail -n +$n |tr '\n' :)'"
 334 }
 335
 336 # Usage: ppop [-n <num>] [<var>]
 337 # Pop <num> entries off the end of PATH or environment variable <var>.
 338 ppop () {
 339     local n=1 i=0
 340     [ "$1" = "-n" ] && { n=$2; shift 2; }
 341     while [ $i -lt $n ]
 342     do eval "${1:-PATH}='\${${1:-PATH}%:*}'"
 343        i=$(( i + 1 ))
 344     done
 345 }
 346
 347 # Usage: prm <path> [<var>]
 348 # Remove <path> from PATH or environment variable <var>.
 349 prm () { eval "${2:-PATH}='$(pls $2 |grep -v "^$1\$" |tr '\n' :)'"; }
 350
 351 # Usage: punshift <path> [<var>]
 352 # Shift <path> onto the beginning of PATH or environment variable <var>.
 353 punshift () { eval "${2:-PATH}='$1:$(eval echo \$${2:-PATH})'"; }
 354
 355 # Usage: ppush <path> [<var>]
 356 ppush () { eval "${2:-PATH}='$(eval echo \$${2:-PATH})':$1"; }
 357
 358 # Usage: puniq [<path>]
 359 # Remove duplicate entries from a PATH style value while retaining
 360 # the original order. Use PATH if no <path> is given.
 361 #
 362 # Example:
 363 #   $ puniq /usr/bin:/usr/local/bin:/usr/bin
 364 #   /usr/bin:/usr/local/bin
 365 puniq () {
 366     echo "$1" | tr : '\n' | nl | sort -u -k 2,2 | sort -n |
 367     cut -f 2- | tr '\n' : | sed -e 's/:$//' -e 's/^://'
 368 }
 369
 370 # -------------------------------------------------------------------
 371 # USER SHELL ENVIRONMENT
 372 # -------------------------------------------------------------------
 373
 374 # source ~/.shenv now if it exists
 375 test -r ~/.shenv &&
 376     . ~/.shenv
 377
 378 # condense PATH entries
 379 PATH=$(puniq $PATH)
 380 MANPATH=$(puniq $MANPATH)
 381
 382 # Use the color prompt by default when interactive
 383 test -n "$PS1" &&
 384     prompt_color
 385
 386 # -------------------------------------------------------------------
 387 # MOTD / FORTUNE
 388 # -------------------------------------------------------------------
 389
 390 test -n "$INTERACTIVE" -a -n "$LOGIN" && {
 391     # Get current uname and uptime (if exists on this host)
 392     # Strip any leading whitespace from uname and uptime commands
 393     t_uname="$(test -n "`type -P uname`" && uname -npsr | sed -e 's/^\s+//')"
 394     t_uptime="$(test -n "`type -P uptime`" && uptime | sed -e 's/^\s+//')"
 395     if [ -n "$t_uname" ] || [ -n "$t_uptime" ]; then
 396         echo " --"
 397         test -n "$t_uname" && echo $t_uname
 398         test -n "$t_uptime" && echo $t_uptime
 399         echo " --"
 400     fi
 401     unset t_uname t_uptime
 402 }
 403
 404 # vim: ts=4 sts=4 shiftwidth=4 expandtab