mdw@git.distorted.org.uk Git - profile/blob - dot/bash_profile

   1 ### -*-bash-*-
   2 ###
   3 ### Bash startup things
   4
   5 ## Only do any of this if we haven't done it before.  Otherwise we
   6 ## can have loops and lots of wasted time.
   7 if [ -z "$__mdw_profile" ]; then
   8 export __mdw_profile=done
   9
  10 ###--------------------------------------------------------------------------
  11 ### Utility functions.
  12
  13 ## __mdw_addto VAR DIR PATH ...
  14 ##
  15 ## VAR is the name of a PATH-like environment variable (i.e., one which
  16 ## contains a sequence of pathnames separated by colons).  DIR is either `l'
  17 ## or `r'.  The PATHs are pathnames.  Those PATHs which correspond to
  18 ## existing directories but which aren't currently named in the variable are
  19 ## added to the left or right (depending on DIR) of VAR.  The relative order
  20 ## of PATHs added in the same invokation is the same as the order they
  21 ## appeared in PATHs: the DIR argument only affects which end of the VAR they
  22 ## get added to.
  23 __mdw_addto () {
  24   local var=$1 val dir=$2 new="" change=nil
  25   eval "val=\$$var"
  26   shift 2
  27   for i in "$@"; do
  28     case "$new:" in *:$i:*) continue;; esac
  29     [ -d $i ] || continue
  30     case "X$val" in
  31       X) val=$i change=t continue ;;
  32       X$i) continue ;;
  33       X*:$i:*) val=`echo $val | sed -e "s=:$i:=:="` ;;
  34       X$i:*) val=${val#$i:} ;;
  35       X*:$i) val=${val%:$i} ;;
  36     esac
  37     new=$new:$i change=t
  38   done
  39   case $dir in
  40     l) val=${new#:}:$val ;;
  41     r) val=$val$new ;;
  42   esac
  43   case $change in t) export $var="$val" ;; esac
  44 }
  45
  46 ## __mdw_programp NAME
  47 ##
  48 ## Does NAME exist as an executable program?
  49 __mdw_programp () { type -t >/dev/null "$1"; }
  50
  51 ###--------------------------------------------------------------------------
  52 ### Other preliminaries.
  53
  54 ## Work out my home directory.
  55 ##
  56 ## This horrible trick resolves symbolic links.  It enables resolving links,
  57 ## changes directory and displays the name of the directory in a subshell to
  58 ## avoid changing the current state.
  59 HOME=`(set -P; cd $HOME; pwd)`
  60 cd $HOME
  61
  62 ## CDE's session structure is demented and doesn't leave us with a proper
  63 ## logout hook, so synthesize one here.
  64 [ -n "$DT" ] && trap "source $HOME/.bash_logout" EXIT
  65
  66 ###--------------------------------------------------------------------------
  67 ### Set some basic paths.
  68
  69 ## The main path.
  70 __mdw_addto PATH l \
  71   $HOME/bin \
  72   {/usr{/local,}{,/X11R6},}{/bin,/sbin,/games} \
  73   /opt/nfast{,/gcc}{/bin,/sbin} \
  74   $HOME/src/ncipher/scripts
  75
  76 ## If we have Plan 9 from User Space, then add that in.
  77 if [ -d /usr/local/plan9 ]; then
  78   export PLAN9=/usr/local/plan9
  79   __mdw_addto PATH r \
  80     $PLAN9/bin
  81 fi
  82
  83 ## Search for `info' documents.
  84 __mdw_addto INFOPATH r \
  85         $HOME/info \
  86         /usr/info /usr/share/info \
  87         /usr/local/info /usr/local/share/info \
  88         /usr/local/share/info/its
  89
  90 ## Script libraries.
  91 __mdw_addto PERLLIB r $HOME/lib/perl
  92 __mdw_addto PYTHONPATH r $HOME/lib/python
  93
  94 ###--------------------------------------------------------------------------
  95 ### Various other kinds of configuration.
  96
  97 ## Establish a temporary directory.
  98 [ "$TMPDIR" ] || eval `tmpdir -b`
  99 export TMP=$TMPDIR
 100
 101 ## Sensible umask if users have their own groups.
 102 umask 002
 103
 104 ## Mail and general identification.
 105 export MAIL=`mdw-conf mailbox`
 106 export NAME="Mark Wooding"
 107 export EMAIL=`mdw-conf email`
 108 export QMAILINJECT=c
 109
 110 ## Some programs want to know the hostname.
 111 [ -z "$HOST" ] && export HOST=`hostname`
 112
 113 ## Text editor configuration.
 114 export MDW_EDITOR=ed
 115 emacs_startup_args="--no-site-file --mdw-fast-startup -nw"
 116 for ed in \
 117         "emacs22 $emacs_startup_args" \
 118         "emacs21 $emacs_startup_args" \
 119         zile mg \
 120         "emacs -nw" \
 121         vi pico nano ae; do
 122   name=`echo $ed | sed 's/ .*$//'`
 123   if __mdw_programp "$name"; then
 124     MDW_EDITOR=$ed
 125     break
 126   fi
 127 done
 128 export EDITOR=mdw-editor VISUAL=mdw-editor
 129
 130 ## Determine the locale settings.  Really don't set LC_COLLATE because it
 131 ## messes with the order of files in `ls' listings and similar.
 132 if [ "$DISPLAY" != "" ]; then
 133   LANG=`mdw-conf x-ctype`
 134 else
 135   : ${LANG=${LC_CTYPE-${LC_ALL-`mdw-conf console-ctype`}}}
 136   case "$TERM,`tty`" in
 137     linux,/dev/tty*)
 138       if { vt-is-UTF8 ||
 139            kbd_mode | grep UTF-8; } >/dev/null 2>&1; then
 140         ctype=.utf8
 141       else
 142         ctype=
 143       fi
 144       LANG=${LANG%.*}$ctype
 145       ;;
 146   esac
 147 fi
 148 unset LC_ALL
 149 export LC_COLLATE=POSIX LANG
 150
 151 ## Pager configuration.
 152 export MDW_PAGER=`type -p less` PAGER=mdw-pager METAMAIL_PAGER=mdw-pager
 153 export LESS="-iqgRh1FSX"
 154 export LESSOPEN="|lesspipe.sh %s"
 155 case "${LC_CTYPE-$LANG}" in
 156   *utf8 | *utf-8 | *UTF8 | *UTF-8) LESSCHARSET=utf-8 ;;
 157   *) LESSCHARSET=latin1 ;;
 158 esac
 159 export LESSCHARSET
 160 __mdw_programp global && export LESSGLOBALTAGS=global
 161
 162 ## HTTP and FTP proxies.
 163 http=`mdw-conf http-proxy none`
 164 case "${http_proxy-none},$http" in
 165   *,none) ;;
 166   none,*) export http_proxy=http://$http/ ;;
 167 esac
 168 ftp=`mdw-conf ftp-proxy none`
 169 case "${ftp_proxy-none},$ftp,${http_proxy-none}" in
 170   *,none,none) ;;
 171   none,none,*) export ftp_proxy=$http_proxy ;;
 172   none,*,*) export ftp_proxy=http://$ftp/ ;;
 173 esac
 174
 175 ## Ncurses programs should use the Unicode box-drawing characters because the
 176 ## alternative character set stuff isn't supported well.
 177 export NCURSES_NO_UTF8_ACS=1
 178
 179 ## Shut up Perl's readline machinery.
 180 export PERL_READLINE_NOWARN=yes
 181
 182 ## If we have `distcc' then tell `ccache' to use it.
 183 __mdw_programp distcc && export CCACHE_PREFIX=distcc
 184
 185 ## Choose a sensible web browser.  If we have a display, try to pick a
 186 ## graphical one.
 187 browsers="elinks w3m lynx"
 188 case "${DISPLAY+t}" in
 189   t) browsers="mdw-chrome iceweasel firefox $browsers" ;;
 190 esac
 191 for i in $browsers; do
 192   if __mdw_programp $i; then
 193     export BROWSER=$i
 194     break
 195   fi
 196 done
 197 unset browsers
 198
 199 ## Acquiring root privileges.  This is mainly the job of `bashrc', but we
 200 ## cache the mechanism here.
 201 export __MDW_ROOTLY=`mdw-conf rootly`
 202 export BECOME="--preserve-environment"
 203
 204 ## It's useful to see the little sigils in `ls'.
 205 [ -z "$LS_OPTIONS" ] && export LS_OPTIONS="-F"
 206
 207 ## Settings for BBC BASIC listing.
 208 export BASCAT="-l +n"
 209
 210 ## Version control hacking.
 211 export CVS_RSH=ssh
 212 export CVSROOT=`mdw-conf cvs-root`
 213 export SVNROOT=`mdw-conf svn-root`
 214 export P4CONFIG=.p4
 215
 216 ## News server.
 217 [ -z "$NNTPSERVER" ] && export NNTPSERVER=`mdw-conf nntp-server`
 218
 219 ## Help X programs find their resources.
 220 export XUSERFILESEARCHPATH="$HOME/.Xapps/%N:/usr/lib/X11/%T/%N%S"
 221
 222 ## Make OpenOffice.org do its thing properly.
 223 export OOO_FORCE_DESKTOP=gnome
 224
 225 ## Configure `ps'.
 226 export PS_PERSONALITY=gnu
 227
 228 ## Disable core dumps.
 229 ulimit -S -c 0
 230
 231 ###--------------------------------------------------------------------------
 232 ### Authentication and SSH hacking.
 233
 234 ## Start an authentication agent.  This is unnecessarily fiddly.  If there's
 235 ## a Gnome keyring server then we should use that; unfortunately, it may not
 236 ## yet have had a chance to populate the environment with its settings, so we
 237 ## go off and fetch them.
 238 if { { [ "$GNOME_KEYRING_CONTROL" ] &&
 239        [ -s "$GNOME_KEYRING_CONTROL" ]; } ||
 240      { [ "$DBUS_SESSION_BUS_ADDRESS" ] &&
 241        dbus-send --session --print-reply --dest=org.freedesktop.DBus \
 242          / org.freedesktop.DBus.GetNameOwner string:org.gnome.keyring \
 243          >/dev/null 2>/dev/null; }; } &&
 244    stuff=$(gnome-keyring-daemon -s -c ssh 2>/dev/null)
 245 then
 246   eval "$stuff"
 247   export SSH_AUTH_SOCK
 248 fi
 249
 250 ## If we still don't have an agent then start one with a stable name.
 251 eval `start-ssh-agent -b`
 252
 253 ## Decide whether this session should be considered `secure'.  A session is
 254 ## secure if it's on a secure TTY, but there are lots of ways of finding out
 255 ## which TTYs are secure.
 256 if [ -z "$__mdw_bashrc" ] && [ "$__mdw_force_secure_session" = "yes" ] ||
 257    ( tty="`tty`" devtty="(/dev/)?${tty#/dev/}"
 258      { { { [ -e /etc/securetty ] && sectty=/etc/securetty; } ||
 259          { [ -e /etc/securettys ] && sectty=/etc/securettys; }; } &&
 260        egrep "$devtty" $sectty >/dev/null; } ||
 261      { [ -e /etc/default/login ] &&
 262        egrep "^CONSOLE=$devtty" /etc/default/login >/dev/null; } ||
 263      case "${tty#/dev/}" in
 264        console|systty|tty[0-9]) true ;;
 265        *) false ;;
 266      esac )
 267 then
 268   export __mdw_sechost="`hostname`"
 269 fi
 270
 271 ## Start a passphrase pixie if there is one and it's not already running.
 272 if pixie --version >/dev/null 2>&1; then
 273   mkdir -p $HOME/.catacomb
 274   pixie=${CATACOMB_PIXIE-$HOME/.catacomb/pixie}
 275   if [ -S "$pixie" ] && pixie -C help >/dev/null 2>/dev/null; then
 276     :
 277   else
 278     pixie -d 2>>$HOME/.catacomb/pixie.log
 279     __mdw_started_pixie=yes
 280   fi
 281 fi
 282
 283 ###--------------------------------------------------------------------------
 284 ### Finishing touches.
 285
 286 ## If there's a local hook then run it.
 287 [ -f "$HOME/.profile-local" ] && . "$HOME/.profile-local"
 288
 289 ## End of the `__mdw_profile' guard.
 290 fi
 291
 292 ## If we haven't run the `.bashrc' yet, and this shell is interactive, then
 293 ## run it now.
 294 [ -z "$__mdw_bashrc" ] && [ -t 0 ] && \
 295   [ -r $HOME/.bashrc ] && . $HOME/.bashrc
 296
 297 ###----- That's all, folks --------------------------------------------------