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