.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
  11 # complete hostnames from this file
  12 HOSTFILE=~/.ssh/known_hosts
  13
  14 # readline config
  15 INPUTRC=~/.inputrc
  16
  17 if [ "$UNAME" = "Darwin" ]; then
  18     # Fink init, for OSX
  19     test -r /sw/bin/init.sh && source /sw/bin/init.sh
  20 fi
  21
  22 # ----------------------------------------------------------------------
  23 #  SHELL OPTIONS
  24 # ----------------------------------------------------------------------
  25
  26 # bring in system bashrc
  27 test -r /etc/bashrc &&
  28           . /etc/bashrc
  29
  30 # notify of bg job completion immediately
  31 set -o notify
  32
  33 # shell opts. see bash(1) for details
  34 shopt -s cdspell >/dev/null 2>&1
  35 shopt -s extglob >/dev/null 2>&1
  36 shopt -s histappend >/dev/null 2>&1
  37 shopt -s hostcomplete >/dev/null 2>&1
  38 shopt -s interactive_comments >/dev/null 2>&1
  39 shopt -u mailwarn >/dev/null 2>&1
  40 shopt -s no_empty_cmd_completion >/dev/null 2>&1
  41
  42 # don't check for new mail
  43 unset MAILCHECK
  44
  45 # disable core dumps
  46 ulimit -S -c 0
  47
  48 # default umask
  49 umask 0022
  50
  51 # ----------------------------------------------------------------------
  52 # PATH
  53 # ----------------------------------------------------------------------
  54
  55 # we want the various sbins on the path along with /usr/local/bin
  56 PATH="$PATH:/usr/local/sbin:/usr/sbin:/sbin"
  57 PATH="/usr/local/bin:$PATH"
  58
  59 # put ~/bin on PATH if you have it
  60 test -d "$HOME/bin" &&
  61   PATH="$HOME/bin:$PATH"
  62
  63 # ----------------------------------------------------------------------
  64 # ENVIRONMENT CONFIGURATION
  65 # ----------------------------------------------------------------------
  66
  67 # detect interactive shell
  68 case "$-" in
  69     *i*) INTERACTIVE=yes ;;
  70     *)   unset INTERACTIVE ;;
  71 esac
  72
  73 # detect login shell
  74 case "$0" in
  75    -*) LOGIN=yes ;;
  76    *)  unset LOGIN ;;
  77 esac
  78
  79 # enable en_US locale w/ utf-8 encodings if not already
  80 # configured
  81 : ${LANG:="en_US.UTF-8"}
  82 : ${LANGUAGE:="en"}
  83 : ${LC_CTYPE:="en_US.UTF-8"}
  84 : ${LC_ALL:="en_US.UTF-8"}
  85 export LANG LANGUAGE LC_CTYPE LC_ALL
  86
  87 # ignore backups, CVS directories, python bytecode, vim swap files
  88 FIGNORE="~:CVS:#:.pyc:.swp:.swa:apache-solr-*"
  89 HISTCONTROL=ignoreboth
  90
  91 # ----------------------------------------------------------------------
  92 # PAGER / EDITOR
  93 # ----------------------------------------------------------------------
  94
  95 # See what we have to work with ...
  96 HAVE_VIM=$(command -v vim)
  97
  98 # EDITOR
  99 test -n "$HAVE_VIM" &&
 100   EDITOR=vim ||
 101   EDITOR=vi
 102 export EDITOR
 103
 104 # PAGER
 105 if test -n "$(command -v less)" ; then
 106     PAGER="less -FirSwX"
 107     MANPAGER="less -FiRswX"
 108 else
 109     PAGER=more
 110     MANPAGER="$PAGER"
 111 fi
 112 export PAGER MANPAGER
 113
 114 # ----------------------------------------------------------------------
 115 # PROMPT
 116 # ----------------------------------------------------------------------
 117
 118 RED="\[\033[0;91m\]"
 119 GREEN="\[\033[0;92m\]"
 120 BROWN="\[\033[0;33m\]"
 121 GREY="\[\033[0;37m\]"
 122 WHITE="\[\033[0;97m\]"
 123 BLUE="\[\033[0;94m\]"
 124 PS_CLEAR="\[\033[0m\]"
 125 SCREEN_ESC="\[\033k\033\134\]"
 126
 127 if [ "$LOGNAME" = "root" ]; then
 128     COLOR1="${RED}"
 129     COLOR2="${RED}"
 130     COLOR3="${GREY}"
 131     P="#"
 132 else
 133     COLOR1=""
 134     COLOR2=""
 135     COLOR3=""
 136     P="\$"
 137 fi
 138
 139 prompt_simple() {
 140     unset PROMPT_COMMAND
 141     PS1="[\u@\h:\w]\$ "
 142     PS2="> "
 143 }
 144
 145 prompt_compact() {
 146     unset PROMPT_COMMAND
 147     PS1="${COLOR1}${P}${PS_CLEAR} "
 148     PS2="> "
 149 }
 150
 151 prompt_color() {
 152     PS1="[${COLOR1}\u${PS_CLEAR}@${COLOR2}\h${PS_CLEAR}:${COLOR3}\w${PS_CLEAR}]${COLOR1}${P}${PS_CLEAR} "
 153     PS2="\[^[[33;1m\]continue \[^[[0m^[[1m\]> "
 154 }
 155
 156 # ----------------------------------------------------------------------
 157 # MACOS X / DARWIN SPECIFIC
 158 # ----------------------------------------------------------------------
 159
 160 if [ "$UNAME" = Darwin ]; then
 161     # put ports on the paths if /opt/local exists
 162     test -x /opt/local -a ! -L /opt/local && {
 163         PORTS=/opt/local
 164
 165         # setup the PATH and MANPATH
 166         PATH="$PORTS/bin:$PORTS/sbin:$PATH"
 167         MANPATH="$PORTS/share/man:$MANPATH"
 168
 169         # nice little port alias
 170         alias port="sudo nice -n +18 $PORTS/bin/port"
 171     }
 172 fi
 173
 174 # ----------------------------------------------------------------------
 175 # ALIASES / FUNCTIONS
 176 # ----------------------------------------------------------------------
 177
 178 # alias 'vi' to 'vim' if Vim is installed
 179 vim="$(type -P vim)"
 180 test -n "$vim" && {
 181     alias vi='vim'
 182 }
 183 unset vim
 184
 185 # disk usage with human sizes and minimal depth
 186 alias du1='du -h --max-depth=1'
 187 alias fn='find . -name'
 188 alias hi='history | tail -20'
 189
 190 # ----------------------------------------------------------------------
 191 # BASH COMPLETION
 192 # ----------------------------------------------------------------------
 193
 194 test -z "$BASH_COMPLETION" && {
 195     bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
 196     test -n "$PS1" && test $bmajor -gt 1 && {
 197         # search for a bash_completion file to source
 198         for f in /usr/local/etc/bash_completion \
 199                  /usr/pkg/etc/bash_completion \
 200                  /opt/local/etc/bash_completion \
 201                  /etc/bash_completion
 202         do
 203             test -f $f && {
 204                 . $f
 205                 break
 206             }
 207         done
 208     }
 209     unset bash bmajor bminor
 210 }
 211
 212 # override and disable tilde expansion
 213 _expand()
 214 {
 215     return 0
 216 }
 217
 218 # ----------------------------------------------------------------------
 219 # LS AND DIRCOLORS
 220 # ----------------------------------------------------------------------
 221
 222 # we always pass these to ls(1)
 223 LS_COMMON="--color=auto"
 224
 225 # if the dircolors utility is available, set that up to
 226 dircolors="$(type -P gdircolors dircolors | head -1)"
 227 test -n "$dircolors" && {
 228     COLORS=/etc/DIR_COLORS
 229     test -e "/etc/DIR_COLORS.$TERM"   && COLORS="/etc/DIR_COLORS.$TERM"
 230     test -e "$HOME/.dircolors"        && COLORS="$HOME/.dircolors"
 231     test ! -e "$COLORS"               && COLORS=
 232     eval `$dircolors --sh $COLORS`
 233 }
 234 unset dircolors
 235
 236 # setup the main ls alias if we've established common args
 237 test -n "$LS_COMMON" &&
 238   alias ls="command ls $LS_COMMON"
 239
 240 # these use the ls aliases above
 241 alias ll="ls -l"
 242 alias l.="ls -d .*"
 243
 244 # --------------------------------------------------------------------
 245 # MISC COMMANDS
 246 # --------------------------------------------------------------------
 247
 248 # push SSH public key to another box
 249 push_ssh_cert() {
 250     local _host
 251     test -f ~/.ssh/id_dsa.pub || ssh-keygen -t dsa
 252     for _host in "$@";
 253     do
 254         echo $_host
 255         ssh $_host 'cat >> ~/.ssh/authorized_keys2' < ~/.ssh/id_dsa.pub
 256     done
 257 }
 258
 259 # --------------------------------------------------------------------
 260 # PATH MANIPULATION FUNCTIONS
 261 # --------------------------------------------------------------------
 262
 263 # Usage: pls [<var>]
 264 # List path entries of PATH or environment variable <var>.
 265 pls () { eval echo \$${1:-PATH} |tr : '\n'; }
 266
 267 # Usage: pshift [-n <num>] [<var>]
 268 # Shift <num> entries off the front of PATH or environment var <var>.
 269 # with the <var> option. Useful: pshift $(pwd)
 270 pshift () {
 271     local n=1
 272     [ "$1" = "-n" ] && { n=$(( $2 + 1 )); shift 2; }
 273     eval "${1:-PATH}='$(pls |tail -n +$n |tr '\n' :)'"
 274 }
 275
 276 # Usage: ppop [-n <num>] [<var>]
 277 # Pop <num> entries off the end of PATH or environment variable <var>.
 278 ppop () {
 279     local n=1 i=0
 280     [ "$1" = "-n" ] && { n=$2; shift 2; }
 281     while [ $i -lt $n ]
 282     do eval "${1:-PATH}='\${${1:-PATH}%:*}'"
 283        i=$(( i + 1 ))
 284     done
 285 }
 286
 287 # Usage: prm <path> [<var>]
 288 # Remove <path> from PATH or environment variable <var>.
 289 prm () { eval "${2:-PATH}='$(pls $2 |grep -v "^$1\$" |tr '\n' :)'"; }
 290
 291 # Usage: punshift <path> [<var>]
 292 # Shift <path> onto the beginning of PATH or environment variable <var>.
 293 punshift () { eval "${2:-PATH}='$1:$(eval echo \$${2:-PATH})'"; }
 294
 295 # Usage: puniq [<path>]
 296 # Remove duplicate entries from a PATH style value while retaining
 297 # the original order. Use PATH if no <path> is given.
 298 #
 299 # Example:
 300 #   $ puniq /usr/bin:/usr/local/bin:/usr/bin
 301 #   /usr/bin:/usr/local/bin
 302 puniq () {
 303    echo "$1" |tr : '\n' |nl |sort -u -k 2,2 |sort -n |
 304    cut -f 2- |tr '\n' : |sed -e 's/:$//' -e 's/^://'
 305 }
 306
 307 # -------------------------------------------------------------------
 308 # USER SHELL ENVIRONMENT
 309 # -------------------------------------------------------------------
 310
 311 # source ~/.shenv now if it exists
 312 test -r ~/.shenv &&
 313   . ~/.shenv
 314
 315 # condense PATH entries
 316 PATH=$(puniq $PATH)
 317 MANPATH=$(puniq $MANPATH)
 318
 319 # Use the color prompt by default when interactive
 320 test -n "$PS1" &&
 321   prompt_color
 322
 323 # vim: ts=4 sts=4 shiftwidth=4 expandtab