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