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import openbsd z* scripts and manuals.

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1 parent a2bca40 commit d59c284b1b32a3ed2163c67ffca5dab1793c06de mrg committed Dec 28, 2003
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  1. +177 −0 usr.bin/gzip/gzexe
  2. +71 −0 usr.bin/gzip/gzexe.1
  3. +108 −0 usr.bin/gzip/zdiff
  4. +106 −0 usr.bin/gzip/zdiff.1
  5. +52 −0 usr.bin/gzip/zforce
  6. +51 −0 usr.bin/gzip/zforce.1
  7. +72 −0 usr.bin/gzip/zmore
  8. +92 −0 usr.bin/gzip/zmore.1
  9. +135 −0 usr.bin/gzip/znew
  10. +69 −0 usr.bin/gzip/znew.1
View
177 usr.bin/gzip/gzexe
@@ -0,0 +1,177 @@
+#!/bin/sh -
+#
+# $OpenBSD: gzexe,v 1.3 2003/08/05 18:22:17 deraadt Exp $
+#
+# Copyright (c) 2003 Otto Moerbeek <otto@drijf.net>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+
+# The number of lines plus one in the on-the-fly decompression script
+lines=19
+
+# A simple string to recognize already compressed files
+magic="# compressed by gzexe"
+
+# Write the decompression script to stdout
+header () {
+ typeset prog tmp
+ # first section needs variable expansion, second not
+ cat <<- EOF
+ #!/bin/sh -
+ $magic
+ lines=$lines
+ EOF
+ cat <<- 'EOF'
+ prog=`/usr/bin/basename "$0"`
+ tmp=`/usr/bin/mktemp -d /tmp/gzexeXXXXXXXXXX` || {
+ /bin/echo "$prog: cannot create tmp dir"; exit 1
+ }
+ trap '/bin/rm -rf "$tmp"' 0
+ if /usr/bin/tail +$lines "$0" |
+ /usr/bin/gzip -dc > "$tmp/$prog" 2> /dev/null; then
+ /bin/chmod u+x "$tmp/$prog"
+ "$tmp/$prog" ${1+"$@"}
+ ret=$?
+ else
+ /bin/echo "$prog: cannot decompress $0"
+ ret=1
+ fi
+ exit $ret
+ EOF
+}
+
+# Test if a file is compressed by checking the magic line
+compressed () {
+ test "X`sed -n 2p "$1" 2> /dev/null`" = "X$magic"
+}
+
+# Decompress a file
+decompress () {
+ tmp=`mktemp /tmp/gzexeXXXXXXXXXX` || {
+ echo "$prog: cannot create tmp file"
+ return 1
+ }
+ if ! cp "$1" "$tmp"; then
+ echo "$prog: cannot copy $1 to $tmp"
+ rm -f "$tmp"
+ return 1
+ fi
+ if ! tail +$lines "$tmp" | gzip -vdc > "$1"; then
+ echo "$prog: cannot decompress $1"
+ cp "$tmp" "$1"
+ rm -f "$tmp"
+ return 1
+ fi
+}
+
+# Perform some sanity checks on the file
+check () {
+ if test ! -e "$1"; then
+ echo "$prog: cannot compress non-existing file $1"
+ return 1
+ fi
+
+ if test ! -f "$1"; then
+ echo "$prog: cannot compress non-regular file $1"
+ return 1
+ fi
+
+ case `basename "$1"` in
+ sh | mktemp | rm | echo | tail | gzip | chmod)
+ echo "$prog: cannot compress $1, I depend on it"
+ return 1
+ esac
+
+ if test ! -x "$1"; then
+ echo "$prog: cannot compress $1, it is not executable"
+ return 1
+ fi
+
+ if test -u "$1" -o -g "$1"; then
+ echo "$prog: cannot compress $1, it has an s bit set"
+ return 1
+ fi
+}
+
+# Compress a file
+compress () {
+ tmp=`mktemp /tmp/gzexeXXXXXXXXXX` || {
+ echo "$prog: cannot create tmp file"
+ return 1
+ }
+ if ! cp "$1" "$tmp"; then
+ echo "$prog: cannot copy $1 to $tmp"
+ rm -f "$tmp"
+ return 1
+ fi
+ if ! cp "$1" "$1"~; then
+ echo "$prog: cannot create backup copy $1~"
+ rm -f "$1"~ "$tmp"
+ return 1
+ fi
+
+ # Use cp to overwrite the existing file preserving mode and owner
+ # if possible. If the file is not writable, this will produce an
+ # error.
+
+ if header "$1" > "$tmp" && gzip -vc "$1" >> "$tmp"; then
+ if ! cp "$tmp" "$1"; then
+ echo "$prog: cannot copy $tmp to $1"
+ rm -f "$tmp"
+ return 1
+ fi
+ else
+ echo "$prog: cannot compress $1"
+ rm -f "$1"~ "$tmp"
+ return 1
+ fi
+}
+
+# Is the -d flag specified?
+dflag=
+
+# Return value
+rc=0
+
+if test "X$1" = X-d; then
+ dflag=1
+ shift
+fi
+
+prog=`basename "$0"`
+USAGE="usage: $prog [-d] file ..."
+if test $# -eq 0; then
+ echo $USAGE
+ exit 1
+fi
+
+while test $# -ne 0; do
+ if test $dflag; then
+ if ! compressed "$1"; then
+ echo "$prog: $1 is not compressed"
+ rc=1;
+ elif ! decompress "$1"; then
+ rc=$?
+ fi
+ else
+ if compressed "$1"; then
+ echo "$prog: $1 is already compressed"
+ rc=1;
+ elif ! check "$1" || ! compress "$1"; then
+ rc=$?
+ fi
+ fi
+ shift
+done
+exit $rc
View
71 usr.bin/gzip/gzexe.1
@@ -0,0 +1,71 @@
+.\" $OpenBSD: gzexe.1,v 1.1 2003/07/31 07:32:47 otto Exp $
+.\"
+.\" Copyright (c) 2003 Otto Moerbeek <otto@drijf.net>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd July 30, 2003
+.Dt GZEXE 1
+.Os
+.Sh NAME
+.Nm gzexe
+.Nd create auto-decompressing executables
+.Sh SYNOPSIS
+.Nm gzexe
+.Op Fl d
+.Ar
+.Sh DESCRIPTION
+The
+.Nm
+utility uses
+.Xr gzip 1
+to compress executables, producing executables that decompress on-the-fly
+when executed.
+This saves disk space, at the cost of slower execution times.
+The original executables are saved by copying each of them to a file with
+the same name with a
+.Sq ~
+suffix appended.
+After verifying that the compressed executables work as expected, the backup
+files can be removed.
+.Pp
+The options are as follows:
+.Bl -tag -width Ds
+.It Fl d
+Decompress executables previously compressed by
+.Nm gzexe .
+.El
+.Pp
+The
+.Nm
+program refuses to compress non-regular or non-executable files,
+files with a setuid or setgid bit set, files that are already
+compressed using
+.Nm
+or programs it needs to perform on-the-fly decompression:
+.Xr sh 1 ,
+.Xr mktemp 1 ,
+.Xr rm 1 ,
+.Xr echo 1 ,
+.Xr tail 1 ,
+.Xr gzip 1
+and
+.Xr chmod 1 .
+.Sh SEE ALSO
+.Xr gzip 1
+.Sh CAVEATS
+The
+.Nm
+utility replaces files by overwriting them with the generated
+compressed executable.
+To be able to do this, it is required that the original files are writable.
View
108 usr.bin/gzip/zdiff
@@ -0,0 +1,108 @@
+#!/bin/sh -
+#
+# $OpenBSD: zdiff,v 1.2 2003/07/29 07:42:44 otto Exp $
+#
+# Copyright (c) 2003 Todd C. Miller <Todd.Miller@courtesan.com>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+# Sponsored in part by the Defense Advanced Research Projects
+# Agency (DARPA) and Air Force Research Laboratory, Air Force
+# Materiel Command, USAF, under agreement number F39502-99-1-0512.
+#
+
+# Set $prog based on $0
+case $0 in
+ *cmp) prog=cmp
+ ;;
+ *) prog=diff
+ ;;
+esac
+USAGE="usage: z$prog [options] file1 [file2]"
+
+# Pull out any command line flags so we can pass them to diff/cmp
+# XXX - assumes there is no optarg
+flags=
+while test $# -ne 0; do
+ case "$1" in
+ --)
+ shift
+ break
+ ;;
+ -*)
+ flags="$flags $1"
+ shift
+ ;;
+ *)
+ break
+ ;;
+ esac
+done
+
+if [ $# -eq 1 ]; then
+ # One file given, compare compressed to uncompressed
+ files="$1"
+ case "$1" in
+ *[._-][Zz])
+ files="${1%??}"
+ ;;
+ *[._-]gz)
+ files="${1%???}"
+ ;;
+ *.t[ag]z)
+ files="${1%??}"ar
+ ;;
+ *) echo "z$prog: unknown suffix" 1>&2
+ exit 1
+ esac
+ compress -cdfq "$1" | $prog $flags - "$files"
+ status=$?
+elif [ $# -eq 2 ]; then
+ # Two files given, compare the two uncompressing as needed
+ case "$1" in
+ *[._-][Zz]|*[._-]gz|*.t[ag]z)
+ files=-
+ filt="compress -cdfq $1"
+ ;;
+ *)
+ files="$1"
+ ;;
+ esac
+ case "$2" in
+ *[._-][Zz]|*[._-]gz|*.t[ag]z)
+ if [ "$files" = "-" ]; then
+ tmp=`mktemp -t z$prog.XXXXXXXXXX` || exit 1
+ trap "rm -f $tmp" 0 1 2 3 13 15
+ compress -cdfq "$2" > $tmp
+ files="$files $tmp"
+ else
+ files="$files -"
+ filt="compress -cdfq $2"
+ fi
+ ;;
+ *)
+ files="$files $2"
+ ;;
+ esac
+ if [ -n "$filt" ]; then
+ $filt | $prog $flags $files
+ else
+ $prog $flags $files
+ fi
+ status=$?
+else
+ echo "$USAGE" 1>&2
+ exit 1
+fi
+
+exit $status
View
106 usr.bin/gzip/zdiff.1
@@ -0,0 +1,106 @@
+.\" $OpenBSD: zdiff.1,v 1.2 2003/07/13 17:39:14 millert Exp $
+.\"
+.\" Copyright (c) 2003 Todd C. Miller <Todd.Miller@courtesan.com>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.\" Sponsored in part by the Defense Advanced Research Projects
+.\" Agency (DARPA) and Air Force Research Laboratory, Air Force
+.\" Materiel Command, USAF, under agreement number F39502-99-1-0512.
+.\"
+.Dd June 23, 2003
+.Dt ZDIFF 1
+.Os
+.Sh NAME
+.Nm zcmp ,
+.Nm zdiff
+.Nd compare compressed files
+.Sh SYNOPSIS
+.Nm zcmp
+.Op Ar options
+.Ar file
+.Op Ar file2
+.Nm zdiff
+.Op Ar options
+.Ar file
+.Op Ar file2
+.Sh DESCRIPTION
+.Nm zcmp
+and
+.Nm zdiff
+are filters that invoke
+.Xr cmp 1
+or
+.Xr diff 1
+respectively to compare compressed files.
+Such files generally have a
+.Dq Z
+or
+.Dq gz
+extension (both the
+.Xr compress 1
+and
+.Xr gzip 1
+formats are supported).
+Any
+.Ar options
+that are specified are passed to
+.Xr cmp 1
+or
+.Xr diff 1 .
+.Pp
+If only
+.Ar file1
+is specified, it is compared against a file with the same name, but
+with the extension removed.
+When both
+.Ar file1
+or
+.Ar file2
+are specified, either file may be compressed.
+.Sh ENVIRONMENT
+.Bl -tag -width "TMPDIR"
+.It Ev TMPDIR
+Directory in which to place temporary files.
+If unset,
+.Pa /tmp
+is used.
+.El
+.Sh FILES
+.Bl -tag -width "/tmp/zdiff.XXXXXXXXXX" -compact
+.It Pa /tmp/zcmp.XXXXXXXXXX
+Temporary file for
+.Nm zcmp .
+.It Pa /tmp/zdiff.XXXXXXXXXX
+Temporary file for
+.Nm zdiff .
+.El
+.Sh SEE ALSO
+.Xr cmp 1 ,
+.Xr compress 1 ,
+.Xr diff 1
+.Sh CAVEATS
+.Nm zcmp
+and
+.Nm zdiff
+rely solely on the file extension to determine what is, or is not,
+a compressed file.
+Consequently, the following are not supported as arguments:
+.Bl -dash
+.It
+directories
+.It
+device special files
+.It
+filenames indicating the standard input ("-")
+.El
View
52 usr.bin/gzip/zforce
@@ -0,0 +1,52 @@
+#!/bin/sh -
+#
+# $OpenBSD: zforce,v 1.2 2003/08/05 18:22:17 deraadt Exp $
+#
+# Copyright (c) 2003 Otto Moerbeek <otto@drijf.net>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+prog=`basename $0`
+USAGE="usage: $prog file ..."
+if test $# -eq 0; then
+ echo $USAGE
+ exit 1
+fi
+
+ret=0
+
+while test $# -ne 0; do
+ case "$1" in
+ *[._-]gz)
+ shift
+ ;;
+ *.t[ag]z)
+ shift
+ ;;
+ *)
+ if file "$1" |
+ grep -q "gzip compressed data" 2> /dev/null
+ then
+ n="$1".gz
+ if mv "$1" "$n" 2> /dev/null; then
+ echo "$1" -- renamed to "$n"
+ else
+ ret=1
+ echo $prog: cannot rename "$1" to "$n"
+ fi
+ fi
+ shift
+ ;;
+ esac
+done
+exit $ret
View
51 usr.bin/gzip/zforce.1
@@ -0,0 +1,51 @@
+.\" $OpenBSD: zforce.1,v 1.1 2003/07/29 11:50:09 otto Exp $
+.\"
+.\" Copyright (c) 2003 Otto Moerbeek <otto@drijf.net>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd July 29, 2003
+.Dt ZFORCE 1
+.Os
+.Sh NAME
+.Nm zforce
+.Nd force gzip files to have a .gz suffix
+.Sh SYNOPSIS
+.Nm zforce
+.Ar
+.Sh DESCRIPTION
+The
+.Nm
+utility renames
+.Xr gzip 1
+files to have a
+.Sq .gz
+suffix, so that
+.Xr gzip 1
+will not compress them twice.
+This can be useful if file names were truncated during a file transfer.
+Files that have an existing
+.Sq .gz ,
+.Sq -gz ,
+.Sq _gz ,
+.Sq .tgz
+or
+.Sq .taz
+suffix, or that have not been compressed by
+.Xr gzip 1 ,
+are ignored.
+.Sh SEE ALSO
+.Xr gzip 1
+.Sh CAVEATS
+.Nm
+overwrites existing files without warning.
View
72 usr.bin/gzip/zmore
@@ -0,0 +1,72 @@
+#!/bin/sh -
+#
+# $OpenBSD: zmore,v 1.4 2003/07/29 07:42:45 otto Exp $
+#
+# Copyright (c) 2003 Todd C. Miller <Todd.Miller@courtesan.com>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+# Sponsored in part by the Defense Advanced Research Projects
+# Agency (DARPA) and Air Force Research Laboratory, Air Force
+# Materiel Command, USAF, under agreement number F39502-99-1-0512.
+#
+
+# Pull out any command line flags so we can pass them to more/less
+flags=
+while test $# -ne 0; do
+ case "$1" in
+ --)
+ shift
+ break
+ ;;
+ -*)
+ flags="$flags $1"
+ shift
+ ;;
+ *)
+ break
+ ;;
+ esac
+done
+
+# No files means read from stdin
+if [ $# -eq 0 ]; then
+ compress -cdfq 2>&1 | ${PAGER-more} $flags
+ exit 0
+fi
+
+oterm=`stty -g 2>/dev/null`
+while test $# -ne 0; do
+ compress -cdfq "$1" 2>&1 | ${PAGER-more} $flags
+ prev="$1"
+ shift
+ if tty -s && test -n "$oterm" -a $# -gt 0; then
+ #echo -n "--More--(Next file: $1)"
+ echo -n "$prev (END) - Next: $1 "
+ trap "stty $oterm 2>/dev/null" 0 1 2 3 13 15
+ stty cbreak -echo 2>/dev/null
+ REPLY=`dd bs=1 count=1 2>/dev/null`
+ stty $oterm 2>/dev/null
+ trap - 0 1 2 3 13 15
+ echo
+ case "$REPLY" in
+ s)
+ shift
+ ;;
+ e|q)
+ break
+ ;;
+ esac
+ fi
+done
+exit 0
View
92 usr.bin/gzip/zmore.1
@@ -0,0 +1,92 @@
+.\" $OpenBSD: zmore.1,v 1.3 2003/06/23 21:00:48 deraadt Exp $
+.\"
+.\" Copyright (c) 2003 Todd C. Miller <Todd.Miller@courtesan.com>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.\" Sponsored in part by the Defense Advanced Research Projects
+.\" Agency (DARPA) and Air Force Research Laboratory, Air Force
+.\" Materiel Command, USAF, under agreement number F39502-99-1-0512.
+.\"
+.Dd June 23, 2003
+.Dt ZMORE 1
+.Os
+.Sh NAME
+.Nm zmore
+.Nd view compressed files on a crt
+.Sh SYNOPSIS
+.Nm zmore
+.Op Ar flags
+.Op Ar file ...
+.Sh DESCRIPTION
+.Nm
+is a filter that allows the viewing of files compressed with Lempel-Ziv
+encoding.
+Such files generally have a
+.Dq Z
+or
+.Dq gz
+extension (both the
+.Xr compress 1
+and
+.Xr gzip 1
+formats are supported).
+Any
+.Ar flags
+that are specified are passed to the user's preferred
+.Ev PAGER
+(which is
+.Pa /usr/bin/more
+by default).
+.Pp
+When multiple files are specified,
+.Nm
+will pause at the end of each file and present the following prompt to the user:
+.Bd -literal -offset indent
+prev_file (END) - Next: next_file
+.Ed
+.Pp
+Where
+.Sy prev_file
+is the file that was just displayed and
+.Sy next_file
+is the next file to be displayed.
+The following keys are recognized at the prompt:
+.Bl -tag -width "e or q" -offset indent
+.It Ic e No or Ic q
+quit
+.Nm zmore .
+.It Ic s
+skip the next file (or exit if the next file is the last).
+.El
+.Pp
+If no files are specified,
+.Nm
+will read from the standard input.
+In this mode
+.Nm
+will assume
+.Xr gzip 1
+style compression since there is no suffix on which to make a decision.
+.Sh ENVIRONMENT
+.Bl -tag -width "PAGER"
+.It Ev PAGER
+Program used to display files.
+If unset,
+.Pa /usr/bin/more
+is used.
+.El
+.Sh SEE ALSO
+.Xr compress 1 ,
+.Xr less 1 ,
+.Xr more 1
View
135 usr.bin/gzip/znew
@@ -0,0 +1,135 @@
+#!/bin/ksh -
+#
+# $OpenBSD: znew,v 1.2 2003/08/05 18:22:17 deraadt Exp $
+#
+# Copyright (c) 2003 Otto Moerbeek <otto@drijf.net>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+
+# Return 0 if the first arg file size is smaller than the second, 1 otherwise.
+smaller () {
+ a=`du -k "$1" | awk '{ print $1 }'`
+ b=`du -k "$2" | awk '{ print $1 }'`
+ test $a -lt $b
+}
+
+# Check gzip integrity if the -t flag is specified
+checkfile () {
+ if test $tflag -eq 1; then
+ gzip -qt < "$1"
+ fi
+}
+
+# Decompress a file and then gzip it
+process () {
+ prefix="${1%.Z}"
+ filez="$prefix".Z
+ filegz="$prefix".gz
+
+ if test ! -e "$filez"; then
+ echo "$prog: $filez does not exist"
+ return 1
+ fi
+ if test ! -f "$filez"; then
+ echo "$prog: $filez is not a regular file"
+ return 1
+ fi
+ if test -e "$filegz" -a $fflag -eq 0; then
+ echo "$prog: $filegz already exists"
+ return 1
+ fi
+
+ tmp=`mktemp /tmp/znewXXXXXXXXXX` || {
+ echo "$prog: cannot create tmp file"
+ return 1
+ }
+ trap 'rm -f "$tmp"; exit 1' HUP INT QUIT PIPE TERM
+
+ # Do the actual work, producing a file "$tmp"
+ if uncompress -f -c < "$filez" | gzip -f $gzipflags -o "$tmp"; then
+
+ if test $kflag -eq 1 && smaller "$filez" "$tmp"; then
+ echo -n "$prog: $filez is smaller than $filegz"
+ echo "; keeping it"
+ rm -f "$tmp"
+ return 0
+ fi
+ if ! checkfile "$tmp"; then
+ echo "$prog: integrity check of $tmp failed"
+ rm -f "$tmp"
+ return 1;
+ fi
+
+ # Try to keep the mode of the original file
+ if ! cp -fp "$filez" "$filegz"; then
+ echo "$prog: warning: could not keep mode of $filez"
+ fi
+ if ! cp "$tmp" "$filegz" 2> /dev/null; then
+ echo "$prog: warning: could not keep mode of $filez"
+ if ! cp -f "$tmp" "$filegz" 2> /dev/null; then
+ echo "$prog: could not copy $tmp to $filegz"
+ rm -f "$filegz" "$tmp"
+ return 1
+ fi
+ fi
+ if ! touch -fr "$filez" "$filegz"; then
+ echo -n "$prog: warning: could not keep timestamp of "
+ echo "$filez"
+ fi
+ rm -f "$filez" "$tmp"
+ else
+ echo "$prog: failed to process $filez"
+ rm -f "$tmp"
+ return 1
+ fi
+}
+
+prog=`basename "$0"`
+usage="usage: $prog [-ftv9K] file ..."
+
+fflag=0
+tflag=0
+kflag=0
+gzipflags=
+
+# -P flag is recognized to maintain compatibility, but ignored. Pipe mode is
+# always used
+while getopts :ftv9PK i; do
+ case $i in
+ f) fflag=1;;
+ t) tflag=1;;
+ v) gzipflags="-v $gzipflags";;
+ 9) gzipflags="-9 $gzipflags";;
+ P) ;;
+ K) kflag=1;;
+ \?) echo "$usage"; exit 1;;
+ esac
+done
+
+shift OPTIND-1
+
+if test $# -eq 0; then
+ echo "$usage"
+ exit 1
+fi
+
+rc=0
+
+while test $# -ne 0; do
+ if ! process "$1"; then
+ rc=$?
+ fi
+ shift
+done
+exit $rc
View
69 usr.bin/gzip/znew.1
@@ -0,0 +1,69 @@
+.\" $OpenBSD: znew.1,v 1.1 2003/08/02 20:52:50 otto Exp $
+.\"
+.\" Copyright (c) 2003 Otto Moerbeek <otto@drijf.net>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd August 1, 2003
+.Dt ZNEW 1
+.Os
+.Sh NAME
+.Nm znew
+.Nd convert compressed files to gzipped files
+.Sh SYNOPSIS
+.Nm
+.Op Fl ftv9K
+.Ar
+.Sh DESCRIPTION
+The
+.Nm
+utility uncompresses files compressed by
+.Xr compress 1
+and recompresses them with
+.Xr gzip 1 .
+.Pp
+The options are as follows:
+.Bl -tag -width Ds
+.It Fl f
+Overwrite existing
+.Sq .gz
+files.
+Unless this option is specified,
+.Nm
+refuses to overwrite existing files.
+.It Fl t
+Test integrity of the gzipped file before deleting the original file.
+If the integrity check fails, the original
+.Sq .Z
+file is not removed.
+.It Fl v
+Print a report specifying the achieved compression ratios.
+.It Fl 9
+Use the -9 mode of
+.Xr gzip 1 ,
+achieving better compression at the cost of slower execution.
+.It Fl K
+Keep the original
+.Sq .Z
+file if it uses less disk blocks than the gzipped one.
+A disk block is 1024 bytes.
+.El
+.Sh SEE ALSO
+.Xr gzip 1
+.Sh CAVEATS
+The
+.Nm
+utility tries to maintain the file mode of the original file.
+If the original file is not writable, it is not able to do that and
+.Nm
+will print a warning.

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