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