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