Initial release

truncate/GNUmakefile

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+include GNUmakevars
+
+all: truncate
+
+clean:
+	rm truncate customize
+
+install: $(BINDIR) $(BINDIR)/truncate $(MAN1DIR)/truncate.1
+
+%: %.pl customize
+	sh ./customize < $< > $@
+	chmod +x $@
+
+%: %.sh customize
+	sh ./customize < $< > $@
+	chmod +x $@
+
+customize: configure
+	sh ./configure
+
+$(BINDIR):
+	mkdir -p $@
+
+include GNUmakerules
+

truncate/configure

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+#!/bin/sh
+#
+echo "#!/bin/sh" > customize.$$
+echo "sed \\" > customize.$$
+chmod +x customize.$$
+
+################################################################
+# find a find which understands -printf
+# (like gnu find)
+#
+now=`date '+%Y%m%d' `
+touch find_printf.$now.$$
+
+for i in /usr/bin/find /usr/local/bin/find
+do
+    ts=`$i find_printf.$now.$$ -printf '%TY%Tm%Td\n'`
+    if [ "x$ts" = "x$now" ]
+    then
+	echo $i works
+	find_printf="$i"
+	break
+    fi
+done
+if [ -z "$find_printf" ]
+then
+    echo could not find a working find_printf command, sorry.
+    exit 1
+fi
+echo "  -e 's,@@@find_printf@@@,$find_printf,g' \\" >> customize.$$
+rm find_printf.$now.$$
+
+
+################################################################
+# finish
+#	Add trailing newline and rename temp file to final name
+#
+echo  >> customize.$$
+
+mv customize.$$ customize
+

truncate/truncate.1

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+.\" $Id: truncate.1,v 1.1 2000-08-23 13:03:42 hjp Exp $
+.\" $Log: truncate.1,v $
+.\" Revision 1.1  2000-08-23 13:03:42  hjp
+.\" Initial release
+.\"
+.\"
+.TH truncate 1
+.SH NAME
+truncate - truncate files to zero length
+.SH SYNOPSIS
+.B truncate
+[
+.I find-options
+] 
+.SH DESCRIPTION
+Truncate uses find with the specified options to find regular files.
+Each file is truncated to zero length, but owner, permissions, and
+last-modified date are preserved. If the user doesn't have write
+permissions for a file, a message is printed and the file is skipped.
+.SH DIAGNOSTICS
+Various error messages from the used commands.
+.SH AUTHOR
+Peter J. Holzer (hjp@wsr.ac.at)

truncate/truncate.sh

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+#!/bin/sh
+@@@find_printf@@@ "$@" -type f -printf '%TY%Tm%Td%TH%TM.%TS %p\n' |
+while read timestamp file
+do
+    echo > "$file"
+    touch -t "$timestamp" "$file"
+done