home *** CD-ROM | disk | FTP | other *** search
- #!/bin/sh
- # updatedb -- build a locate pathname database
- # Copyright (C) 1994 Free Software Foundation, Inc.
-
- # This program is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation; either version 2, or (at your option)
- # any later version.
-
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
-
- # You should have received a copy of the GNU General Public License
- # along with this program; if not, write to the Free Software
- # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- # csh original by James Woods; sh conversion by David MacKenzie.
-
- usage="\
- Usage: updatedb [--localpaths='dir1 dir2...'] [--netpaths='dir1 dir2...']
- [--prunepaths='dir1 dir2...'] [--output=dbfile] [--netuser=user]
- [--old-format] [--version] [--help]"
-
- old=no
- for arg
- do
- opt=`echo $arg|sed 's/^\([^=]*\).*/\1/'`
- val=`echo $arg|sed 's/^[^=]*=\(.*\)/\1/'`
- case "$opt" in
- --localpaths) SEARCHPATHS="$val" ;;
- --netpaths) NETPATHS="$val" ;;
- --prunepaths) PRUNEPATHS="$val" ;;
- --output) LOCATE_DB="$val" ;;
- --netuser) NETUSER="$val" ;;
- --old-format) old=yes ;;
- --version) echo "GNU updatedb version 4.1"; exit 0 ;;
- --help) echo "$usage"; exit 0 ;;
- *) echo "updatedb: invalid option $opt
- $usage" >&2
- exit 1 ;;
- esac
- done
-
- # You can set these in the environment, or use command-line options,
- # to override their defaults:
-
- # Non-network directories to put in the database.
- : ${SEARCHPATHS="/"}
-
- # Network (NFS, AFS, RFS, etc.) directories to put in the database.
- : ${NETPATHS=}
-
- # Directories to not put in the database, which would otherwise be.
- : ${PRUNEPATHS="/tmp /usr/tmp /var/tmp /afs"}
-
- # The same, in the form of a regex that find can use.
- test -z "$PRUNEREGEX" &&
- PRUNEREGEX=`echo $PRUNEPATHS|sed -e 's,^,\\\(^,' -e 's, ,$\\\)\\\|\\\(^,g' -e 's,$,$\\\),'`
-
- # The database file to build.
- : ${LOCATE_DB=/gnu/var/locatedb}
-
- # Directory to hold intermediate files.
- if test -d /var/tmp; then
- : ${TMPDIR=/var/tmp}
- else
- : ${TMPDIR=/usr/tmp}
- fi
-
- # The user to search network directories as.
- : ${NETUSER=daemon}
-
- # The directory containing the subprograms.
- : ${LIBEXECDIR=/gnu/libexec}
-
- # The directory containing find.
- : ${BINDIR=/gnu/bin}
-
- # The names of the utilities to run to build the database.
- : ${find=find}
- : ${frcode=frcode}
- : ${bigram=bigram}
- : ${code=code}
-
- PATH=$LIBEXECDIR:$BINDIR:/usr/ucb:/bin:/usr/bin:$PATH export PATH
-
- # Make and code the file list.
- # Sort case insensitively for users' convenience.
-
- if test $old = no; then
-
- # FIXME figure out how to sort null-terminated strings, and use -print0.
- {
- if test -n "$SEARCHPATHS"; then
- $find $SEARCHPATHS \
- \( -fstype nfs -o -fstype NFS -o -type d -regex "$PRUNEREGEX" \) -prune -o -print
- fi
-
- if test -n "$NETPATHS"; then
- su $NETUSER -c \
- "$find $NETPATHS \\( -type d -regex \"$PRUNEREGEX\" -prune \\) -o -print"
- fi
- } | sort -f | $frcode > $LOCATE_DB.n
-
- # To avoid breaking locate while this script is running, put the
- # results in a temp file, then rename it atomically.
- if test -s $LOCATE_DB.n; then
- rm -f $LOCATE_DB
- mv $LOCATE_DB.n $LOCATE_DB
- chmod 644 $LOCATE_DB
- else
- echo "updatedb: new database would be empty" >&2
- rm -f $LOCATE_DB.n
- fi
-
- else # old
-
- bigrams=$TMPDIR/f.bigrams$$
- filelist=$TMPDIR/f.list$$
- trap 'rm -f $bigrams $filelist; exit' 1 15
-
- # Alphabetize subdirectories before file entries using tr. James says:
- # "to get everything in monotonic collating sequence, to avoid some
- # breakage i'll have to think about."
- {
- if test -n "$SEARCHPATHS"; then
- $find $SEARCHPATHS \
- \( -fstype nfs -o -fstype NFS -o -type d -regex "$PRUNEREGEX" \) -prune -o -print
- fi
- if test -n "$NETPATHS"; then
- su $NETUSER -c \
- "$find $NETPATHS \\( -type d -regex \"$PRUNEREGEX\" -prune \\) -o -print"
- fi
- } | tr / '\001' | sort -f | tr '\001' / > $filelist
-
- # Compute the (at most 128) most common bigrams in the file list.
- $bigram < $filelist | sort | uniq -c | sort -nr |
- awk '{ if (NR <= 128) print $2 }' | tr -d '\012' > $bigrams
-
- # Code the file list.
- $code $bigrams < $filelist > $LOCATE_DB
- chmod 644 $LOCATE_DB
-
- rm -f $bigrams $filelist $errs
-
- fi
-