diff --git a/usr.bin/locate/locate/concatdb.sh b/usr.bin/locate/locate/concatdb.sh
index dd16230d05ea..66f2cfbb3f8d 100644
--- a/usr.bin/locate/locate/concatdb.sh
+++ b/usr.bin/locate/locate/concatdb.sh
@@ -30,25 +30,23 @@
 #
 # Sequence of databases is important.
 #
-# $Id: concatdb.sh,v 1.5 1997/02/22 19:55:45 peter Exp $
+# $Id: concatdb.sh,v 1.6 1997/12/13 18:18:07 sef Exp $
 
 # The directory containing locate subprograms
-: ${LIBEXECDIR=/usr/libexec}; export LIBEXECDIR
+: ${LIBEXECDIR:=/usr/libexec}; export LIBEXECDIR
 
 PATH=$LIBEXECDIR:/bin:/usr/bin:$PATH; export PATH
 
 umask 077			# protect temp files
 
-TMPDIR=${TMPDIR:-/tmp}; export TMPDIR;
-if test X"$TMPDIR" = X -o ! -d "$TMPDIR"; then
-	TMPDIR=/tmp; export TMPDIR
-fi
+: ${TMPDIR:=/tmp}; export TMPDIR;
+test -d "$TMPDIR" || TMPDIR=/tmp
 
 # utilities to built locate database
-: ${bigram=locate.bigram}
-: ${code=locate.code}
-: ${sort=sort}
-: ${locate=locate}
+: ${bigram:=locate.bigram}
+: ${code:=locate.code}
+: ${sort:=sort}
+: ${locate:=locate}
 
 
 case $# in 
diff --git a/usr.bin/locate/locate/mklocatedb.sh b/usr.bin/locate/locate/mklocatedb.sh
index 4021dfcb27b0..30839a2ba6a1 100644
--- a/usr.bin/locate/locate/mklocatedb.sh
+++ b/usr.bin/locate/locate/mklocatedb.sh
@@ -28,25 +28,23 @@
 # 
 # usage: mklocatedb [-presort] < filelist > database
 #
-# $Id: mklocatedb.sh,v 1.4 1997/02/22 19:55:49 peter Exp $
+# $Id: mklocatedb.sh,v 1.5 1997/12/13 18:18:10 sef Exp $
 
 
 # The directory containing locate subprograms
-: ${LIBEXECDIR=/usr/libexec}; export LIBEXECDIR
+: ${LIBEXECDIR:=/usr/libexec}; export LIBEXECDIR
 
 PATH=$LIBEXECDIR:/bin:/usr/bin:$PATH; export PATH
 
 umask 077			# protect temp files
 
-TMPDIR=${TMPDIR:-/tmp}; export TMPDIR
-if test X"$TMPDIR" = X -o ! -d "$TMPDIR"; then
-	TMPDIR=/tmp; export TMPDIR
-fi
+: ${TMPDIR:=/tmp}; export TMPDIR
+test -d "$TMPDIR" || TMPDIR=/tmp
 
 # utilities to built locate database
-: ${bigram=locate.bigram}
-: ${code=locate.code}
-: ${sort=sort}
+: ${bigram:=locate.bigram}
+: ${code:=locate.code}
+: ${sort:=sort}
 
 
 sortopt="-u -T $TMPDIR"
diff --git a/usr.bin/locate/locate/updatedb.sh b/usr.bin/locate/locate/updatedb.sh
index d0e4b62e85d6..79d5538ddd06 100644
--- a/usr.bin/locate/locate/updatedb.sh
+++ b/usr.bin/locate/locate/updatedb.sh
@@ -26,7 +26,7 @@
 #
 # updatedb - update locate database for local mounted filesystems
 #
-# $Id: updatedb.sh,v 1.7 1997/02/22 19:55:49 peter Exp $
+# $Id: updatedb.sh,v 1.8 1997/12/13 18:18:12 sef Exp $
 
 LOCATE_CONFIG="/etc/locate.rc"
 if [ -f "$LOCATE_CONFIG" -a -r "$LOCATE_CONFIG" ]; then
@@ -34,21 +34,19 @@ if [ -f "$LOCATE_CONFIG" -a -r "$LOCATE_CONFIG" ]; then
 fi
 
 # The directory containing locate subprograms
-: ${LIBEXECDIR=/usr/libexec}; export LIBEXECDIR
-TMPDIR=${TMPDIR:-/tmp}; export TMPDIR
-if test X"$TMPDIR" = X -o ! -d "$TMPDIR"; then
-	TMPDIR=/tmp; export TMPDIR
-fi
+: ${LIBEXECDIR:=/usr/libexec}; export LIBEXECDIR
+: ${TMPDIR:=/tmp}; export TMPDIR
+test -d "$TMPDIR" || TMPDIR=/tmp
 
 PATH=$LIBEXECDIR:/bin:/usr/bin:$PATH; export PATH
 
 
-: ${mklocatedb=locate.mklocatedb}	 # make locate database program
-: ${FCODES=/var/db/locate.database}	 # the database
-: ${SEARCHPATHS="/"}		# directories to be put in the database
+: ${mklocatedb:=locate.mklocatedb}	 # make locate database program
+: ${FCODES:=/var/db/locate.database}	 # the database
+: ${SEARCHPATHS:="/"}		# directories to be put in the database
 : ${PRUNEPATHS="/tmp /usr/tmp /var/tmp"} # unwanted directories
-: ${FILESYSTEMS="ufs"}			 # allowed filesystems 
-: ${find=find}
+: ${FILESYSTEMS:="ufs"}			 # allowed filesystems 
+: ${find:=find}
 
 case X"$SEARCHPATHS" in 
 	X) echo "$0: empty variable SEARCHPATHS"; exit 1;; esac