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Newsgroups: comp.sources.misc From: Dave Mack <csu@alembic.ACS.COM> Subject: v20i065: compress - Compress 4.1, Part02/02 Message-ID: <1991Jun25.183911.27829@sparky.IMD.Sterling.COM> X-Md4-Signature: dc34643488b8ba554ee022ec28d0e943 Date: Tue, 25 Jun 1991 18:39:11 GMT Approved: kent@sparky.imd.sterling.com Submitted-by: Dave Mack <csu@alembic.ACS.COM> Posting-number: Volume 20, Issue 65 Archive-name: compress/part02 Environment: UNIX #! /bin/sh # This is a shell archive. Remove anything before this line, then unpack # it by saving it into a file and typing "sh file". To overwrite existing # files, type "sh file -c". You can also feed this as standard input via # unshar, or by typing "sh <file", e.g.. If this archive is complete, you # will see the following message at the end: # "End of archive 2 (of 2)." # Contents: Changes Acks Makefile usermem compress.1 zcmp zcmp.1 zdiff # zmore zmore.1 patchlevel.h # Wrapped by csu@alembic on Thu May 30 16:24:07 1991 PATH=/bin:/usr/bin:/usr/ucb ; export PATH if test -f 'Changes' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'Changes'\" else echo shar: Extracting \"'Changes'\" $2126 characters$ sed "s/^X//" >'Changes' <<'END_OF_FILE' XModifications for version 4.1: X o Added -r command line flag to allow recursive compression/ X decompression of directory trees. As a side-effect, compress X no longer tries to compress/decompress anything that isn't X a regular file. In particular, it ignores symbolic links. X o zcat no longer cares whether a filename ends in .Z or X not - it relies on the magic number in the file. If zcat X is given a filename that doesn't end with .Z and the file X referenced doesn't exist, zcat will append a .Z and try X to open that instead. X o compress -f will now compress multiply hardlinked files. X Uncompress does not recreate the hard link, it creates X a new file. X o Removed compressdir/uncompressdir - no longer needed. X o Removed atob/btoa/tarmail/untarmail - my versions are X based on btoa 5.2 which is not compatible with the atob X included with compress4.0. XCompress version 4.0 improvements: X o compress() speedup (10-50%) by changing division hash to xor X o decompress() speedup (5-10%) X o Memory requirements reduced (3-30%) X o Stack requirements reduced to less than 4kb X o Removed 'Big+Fast' compress code (FBITS) because of compress speedup X o Portability mods for Z8000 and PC/XT (but not zeus 3.2) X o Default to 'quiet' mode X o Unification of 'force' flags X o Manual page overhaul X o Portability enhancement for M_XENIX X o Removed text on #else and #endif X o Added "-V" switch to print version and options X o Added #defines for SIGNED_COMPARE_SLOW X o Added Makefile and "usermem" program X o Removed all floating point computations X o New programs: X compressdir - compress all files on a directory X uncompressdir - uncompress all files on a directory X zcmp - cmp compressed files X zdiff - diff compressed files X The following are with thanks to philabs!per: X btoa - convert binary to ascii for mailing X atob - convert ascii to binary with checksum X tarmail - tar, compress, btoa, and mail files X untarmail - restore "tarmail" files X X WARNING: These last few programs are not compatible X with the original ones from the net. The encoding X has changed. See btoa.c for more info. X END_OF_FILE if test 2126 -ne `wc -c <'Changes'`; then echo shar: \"'Changes'\" unpacked with wrong size! fi # end of 'Changes' fi if test -f 'Acks' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'Acks'\" else echo shar: Extracting \"'Acks'\" $525 characters$ sed "s/^X//" >'Acks' <<'END_OF_FILE' XAcknowledgments: X XCompress, Version 4.1 X XPat Myrto (rwing!pat@cs.washington.edu) deserves the credit Xfor undoing all the damage I did to this version with respect Xto System V and for giving me the occasional kick when my Xchanges clobbered some necessary functionality. X XThanks to James A. Woods for permitting me to corrupt his baby Xand for passing along some tips on ways to improve the performance Xover 4.0. X XThanks to the previous authors whom I didn't contact, for making Xthe program available originally. X X-- XDave Mack END_OF_FILE if test 525 -ne `wc -c <'Acks'`; then echo shar: \"'Acks'\" unpacked with wrong size! fi # end of 'Acks' fi if test -f 'Makefile' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'Makefile'\" else echo shar: Extracting \"'Makefile'\" $2363 characters$ sed "s/^X//" >'Makefile' <<'END_OF_FILE' X# X# Makefile for compress version 4.1 X# XCC=cc X#CC=gcc -traditional X# X# set your compile flags. X# set -DVOIDSIG if your signal() function returns a pointer to X# a function returning void. X# set BSD4 if you have a generally BSDish system - SunOS, Ultrix, etc. X# If you're saddled with a system that only allows 14-character X# filenames, set -DSHORTNAMES X# include -DDIRENT if your system wants you to #include <dirent.h> X# instead of <sys/dir.h> X# The README file describes other flags you may need. X# X# CFLAGS for SunOS4.1 XCFLAGS=-O -DVOIDSIG -DBSD4 -DDIRENT X# CFLAGS for System V Rel 3.x X#CFLAGS=-O -DSHORTNAMES -DDIRENT X# X# BIN is where the executables (compress, uncompress, zcat, zcmp, zdiff X# and zmore) will be installed. X# XBIN=/usr/local/bin X# X# MAN says where to install the man page X# XMAN=/usr/man/manl X# X# MANSUF is the suffix the installed manual page should have X# XMANSUF=l X# X# LN is how to make links (hard or symbolic) on your system X# XLN=ln -s X# X# LIBS contains any additional libraries you may need to link. X# In particular, you may need -lndir or equiv. to get the X# public domain directory access routines if they aren't in your libc. X# XLIBS= X# X# END OF CONFIGURATION OPTIONS X# X XSHARSET1=README compress.c XSHARSET2=Changes Acks Makefile usermem compress.1 zcmp zcmp.1 \ X zdiff zmore zmore.1 patchlevel.h X Xall: compress X Xcompress: USERMEM compress.c X $(CC) $(CFLAGS) -DUSERMEM=`cat USERMEM` -o compress compress.c $(LIBS) X X# USERMEM may have to be set by hand. It should contain the amount of X# available user memory in bytes. See the README file for more info. XUSERMEM: X sh usermem > USERMEM X Xinstall: compress compress.1 X -mv $(BIN)/compress $(BIN)/compress.old X cp compress $(BIN) X rm -f $(BIN)/uncompress $(BIN)/zcat X $(LN) $(BIN)/compress $(BIN)/uncompress X $(LN) $(BIN)/compress $(BIN)/zcat X cp compress.1 $(MAN)/compress.$(MANSUF) X rm -f $(MAN)/uncompress.$(MANSUF) $(MAN)/zcat.$(MANSUF) X $(LN) $(MAN)/compress.$(MANSUF) $(MAN)/uncompress.$(MANSUF) X $(LN) $(MAN)/compress.$(MANSUF) $(MAN)/zcat.$(MANSUF) X cp zmore zcmp zdiff $(BIN) X cp zmore.1 $(MAN)/zmore.$(MANSUF) X cp zcmp.1 $(MAN)/zcmp.$(MANSUF) X rm -f $(MAN)/zdiff.$(MANSUF) X $(LN) $(MAN)/zcmp.$(MANSUF) $(MAN)/zdiff.$(MANSUF) X Xclean: X rm -f compress uncompress zcat core X Xshar: X shar -o compress41.shar.1 -n01 -e02 $(SHARSET1) X shar -o compress41.shar.2 -n02 -e02 $(SHARSET2) X X X X X END_OF_FILE if test 2363 -ne `wc -c <'Makefile'`; then echo shar: \"'Makefile'\" unpacked with wrong size! fi # end of 'Makefile' fi if test -f 'usermem' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'usermem'\" else echo shar: Extracting \"'usermem'\" $1748 characters$ sed "s/^X//" >'usermem' <<'END_OF_FILE' X: This shell script snoops around to find the maximum amount of available X: user memory. These variables need to be set only if there is no X: /usr/adm/messages. KMEM, UNIX, and CLICKSIZE can be set on the command X: line, if desired, e.g. UNIX=/unix XKMEM=/dev/kmem # User needs read access to KMEM XUNIX= X# VAX CLICKSIZE=512, UNIX=/vmunix X# PDP-11 CLICKSIZE=64, UNIX=/unix X# CADLINC 68000 CLICKSIZE=4096, UNIX=/unix X# Perkin-Elmer 3205 CLICKSIZE=4096, UNIX=/edition7 X# Perkin-Elmer all others, CLICKSIZE=2048, UNIX=/edition7 XCLICKSIZE=512 Xeval $* X XSIZE=0 Xif test -r /usr/adm/messages # probably the most transportable Xthen X SIZE=`grep avail /usr/adm/messages | sed -n '$s/.*[ ]//p'` Xfi X Xif test 0$SIZE -le 0 # no SIZE in /usr/adm/messages Xthen X if test -r $KMEM # Readable KMEM X then X if test -n "$UNIX" X then X : User must have specified it already. X elif test -r /vmunix X then X UNIX=/vmunix X CLICKSIZE=512 # Probably VAX X elif test -r /edition7 X then X UNIX=/edition7 X CLICKSIZE=2048 # Perkin-Elmer: change to 4096 on a 3205 X elif test -r /unix X then X UNIX=/unix # Could be anything X fi X if test -n "$UNIX" X then X SIZE=`echo maxmem/D | adb $UNIX $KMEM | sed -n '$s/.*[ ]//p'` X if test 0$SIZE -le 0 X then X SIZE=`echo physmem/D | adb $UNIX $KMEM | sed -n '$s/.*[ ]//p'` X fi X SIZE=`expr 0$SIZE '*' $CLICKSIZE` X fi X fi Xfi X Xcase $UNIX in X /vmunix) # Assume 4.2bsd: check for resource limits X MAXSIZE=`csh -c limit | awk 'BEGIN { MAXSIZE = 1000000 } X/datasize|memoryuse/ && NF == 3 { if ($2 < MAXSIZE) MAXSIZE = $2 } XEND { print MAXSIZE * 1000 }'` X if test $MAXSIZE -lt $SIZE X then X SIZE=$MAXSIZE X fi X ;; Xesac X Xif test 0$SIZE -le 0 Xthen X echo 0;exit 1 Xelse X echo $SIZE Xfi END_OF_FILE if test 1748 -ne `wc -c <'usermem'`; then echo shar: \"'usermem'\" unpacked with wrong size! fi chmod +x 'usermem' # end of 'usermem' fi if test -f 'compress.1' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'compress.1'\" else echo shar: Extracting \"'compress.1'\" $5306 characters$ sed "s/^X//" >'compress.1' <<'END_OF_FILE' X.PU X.TH COMPRESS 1 local X.SH NAME Xcompress, uncompress, zcat \- compress and expand data (version 4.1) X.SH SYNOPSIS X.ll +8 X.B compress X[ X.B \-f X] [ X.B \-v X] [ X.B \-c X] [ X.B \-V X] [ X.B \-r X] [ X.B \-b X.I bits X] [ X.I "name \&..." X] X.ll -8 X.br X.B uncompress X[ X.B \-f X] [ X.B \-v X] [ X.B \-c X] [ X.B \-V X] [ X.I "name \&..." X] X.br X.B zcat X[ X.B \-V X] [ X.I "name \&..." X] X.SH DESCRIPTION X.I Compress Xreduces the size of the named files using adaptive Lempel-Ziv coding. XWhenever possible, Xeach file is replaced by one with the extension X.B "\&.Z," Xwhile keeping the same ownership modes, access and modification times. XIf no files are specified, the standard input is compressed to the Xstandard output. XCompressed files can be restored to their original form using X.I uncompress Xor X.I zcat. X.PP XThe X.B \-f Xoption will force compression of X.I name. XIf X.B \-f Xis not given and X.I compress Xis run in the foreground, Xthe user is prompted as to whether an existing file should be overwritten. X.PP XThe X.B \-c Xoption makes X.I compress/uncompress Xwrite to the standard output; no files are changed. XThe nondestructive behavior of X.I zcat Xis identical to that of X.I uncompress X.B \-c. X.PP XIf the X.B \-r Xflag is specified, X.I compress Xwill operate recursively. If any of the file names specified on the command Xline are directories, X.I compress Xwill descend into the directory and compress all the files it finds there. X.PP X.I Compress Xuses the modified Lempel-Ziv algorithm popularized in X"A Technique for High Performance Data Compression", XTerry A. Welch, X.I "IEEE Computer," Xvol. 17, no. 6 (June 1984), pp. 8-19. XCommon substrings in the file are first replaced by 9-bit codes 257 and up. XWhen code 512 is reached, the algorithm switches to 10-bit codes and Xcontinues to use more bits until the Xlimit specified by the X.B \-b Xflag is reached (default 16). X.I Bits Xmust be between 9 and 16. The default can be changed in the source to allow X.I compress Xto be run on a smaller machine. X.PP XAfter the X.I bits Xlimit is attained, X.I compress Xperiodically checks the compression ratio. If it is increasing, X.I compress Xcontinues to use the existing code dictionary. However, Xif the compression ratio decreases, X.I compress Xdiscards the table of substrings and rebuilds it from scratch. This allows Xthe algorithm to adapt to the next "block" of the file. X.PP XNote that the X.B \-b Xflag is omitted for X.I uncompress, Xsince the X.I bits Xparameter specified during compression Xis encoded within the output, along with Xa magic number to ensure that neither decompression of random data nor Xrecompression of compressed data is attempted. X.PP X.ne 8 XThe amount of compression obtained depends on the size of the Xinput, the number of X.I bits Xper code, and the distribution of common substrings. XTypically, text such as source code or English Xis reduced by 50\-60%. XCompression is generally much better than that achieved by XHuffman coding (as used in X.IR pack ), Xor adaptive Huffman coding X.RI ( compact ), Xand takes less time to compute. X.PP XUnder the X.B \-v Xoption, Xa message is printed yielding the percentage of Xreduction for each file compressed. X.PP XIf the X.B \-V Xoption is specified, the current version and compile options are printed on Xstderr. X.PP XExit status is normally 0; Xif the last file is larger after (attempted) compression, the status is 2; Xif an error occurs, exit status is 1. X.SH "SEE ALSO" Xpack(1), compact(1) X.SH "DIAGNOSTICS" XUsage: compress [\-dfvcV] [\-b maxbits] [file ...] X.in +8 XInvalid options were specified on the command line. X.in -8 XMissing maxbits X.in +8 XMaxbits must follow X.BR \-b \. X.in -8 X.IR file : Xnot in compressed format X.in +8 XThe file specified to X.I uncompress Xhas not been compressed. X.in -8 X.IR file : Xcompressed with X.I xx Xbits, can only handle X.I yy Xbits X.in +8 X.I File Xwas compressed by a program that could deal with Xmore X.I bits Xthan the compress code on this machine. XRecompress the file with smaller X.IR bits \. X.in -8 X.IR file : Xalready has .Z suffix -- no change X.in +8 XThe file is assumed to be already compressed. XRename the file and try again. X.in -8 X.IR file : Xfilename too long to tack on .Z X.in +8 XThe file cannot be compressed because its name is longer than X12 characters. XRename and try again. XThis message does not occur on BSD systems. X.in -8 X.I file Xalready exists; do you wish to overwrite (y or n)? X.in +8 XRespond "y" if you want the output file to be replaced; "n" if not. X.in -8 Xuncompress: corrupt input X.in +8 XA SIGSEGV violation was detected which usually means that the input file has Xbeen corrupted. X.in -8 XCompression: X.I "xx.xx%" X.in +8 XPercentage of the input saved by compression. X(Relevant only for X.BR \-v \.) X.in -8 X-- not a regular file: unchanged X.in +8 XWhen the input file is not a regular file, X(e.g. a directory), it is Xleft unaltered. X.in -8 X-- has X.I xx Xother links: unchanged X.in +8 XThe input file has links; it is left unchanged. See X.IR ln "(1)" Xfor more information. X.in -8 X-- file unchanged X.in +8 XNo savings is achieved by Xcompression. The input remains virgin. X.in -8 X.SH "BUGS" XAlthough compressed files are compatible between machines with large memory, X.BR \-b \12 Xshould be used for file transfer to architectures with Xa small process data space (64KB or less, as exhibited by the DEC PDP Xseries, the Intel 80286, etc.) END_OF_FILE if test 5306 -ne `wc -c <'compress.1'`; then echo shar: \"'compress.1'\" unpacked with wrong size! fi # end of 'compress.1' fi if test -f 'zcmp' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'zcmp'\" else echo shar: Extracting \"'zcmp'\" $760 characters$ sed "s/^X//" >'zcmp' <<'END_OF_FILE' X XOPTIONS= XFILES= Xfor ARG Xdo X case "$ARG" in X -*) OPTIONS="$OPTIONS $ARG";; X *) FILES="$FILES $ARG";; X esac Xdone Xif test -z "$FILES"; then X echo "Usage: zcmp [cmp_options] file [file]" X exit 1 Xfi Xset $FILES Xif test $# -eq 1; then X FILE=`expr $1 : '$.*$\.Z' '|' $1` X zcat $FILE | cmp $OPTIONS - $FILE X STAT="$?" Xelif test $# -eq 2; then X case "$1" in X *.Z) case "$2" in X *.Z) F=`basename $2 .Z` X zcat $2 > /tmp/$F.$$ X zcat $1 | cmp $OPTIONS - /tmp/$F.$$ X STAT="$?";; X *) zcat $1 | cmp $OPTIONS - $2;; X esac;; X *) case "$2" in X *.Z) F=`basename $2 .Z` X zcat $2 > /tmp/$F.$$ X cmp $OPTIONS $1 /tmp/$F.$$ X STAT="$?";; X *) cmp $OPTIONS $1 $2 X STAT="$?";; X esac;; X esac X exit "$STAT" Xelse X echo "Usage: zcmp [cmp_options] file [file]" X exit 1 Xfi END_OF_FILE if test 760 -ne `wc -c <'zcmp'`; then echo shar: \"'zcmp'\" unpacked with wrong size! fi chmod +x 'zcmp' # end of 'zcmp' fi if test -f 'zcmp.1' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'zcmp.1'\" else echo shar: Extracting \"'zcmp.1'\" $797 characters$ sed "s/^X//" >'zcmp.1' <<'END_OF_FILE' X.TH ZCMP 1 X.SH NAME Xzcmp, zdiff \- compare compressed files X.SH SYNOPSIS X.B zcmp X[ cmp_options ] file1 X[ file2 ] X.br X.B zdiff X[ diff_options ] file1 X[ file2 ] X.SH DESCRIPTION X.I Zcmp Xand X.I zdiff Xare used to invoke the X.I cmp Xor the X.I diff Xprogram on compressed files. All options specified are passed directly to X.I cmp Xor X.IR diff "." XIf only 1 file is specified, then the files compared are X.I file1 Xand an uncompressed X.IR file1 ".Z." XIf two files are specified, then they are uncompressed (if ending with ".Z") Xand fed to X.I cmp Xor X.IR diff "." XThe exit status from X.I cmp Xor X.I diff Xis preserved. X.SH "SEE ALSO" Xcmp(1), diff(1), zmore(1), zcat(1), compress(1), uncompress(1) X.SH BUGS XMessages from the X.I cmp Xor X.I diff Xprograms refer to temporary filenames instead of those specified. END_OF_FILE if test 797 -ne `wc -c <'zcmp.1'`; then echo shar: \"'zcmp.1'\" unpacked with wrong size! fi # end of 'zcmp.1' fi if test -f 'zdiff' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'zdiff'\" else echo shar: Extracting \"'zdiff'\" $724 characters$ sed "s/^X//" >'zdiff' <<'END_OF_FILE' X XOPTIONS= XFILES= Xfor ARG Xdo X case "$ARG" in X -*) OPTIONS="$OPTIONS $ARG";; X *) FILES="$FILES $ARG";; X esac Xdone Xif test -z "$FILES"; then X echo "Usage: zdiff [diff_options] file [file]" X exit 1 Xfi Xset $FILES Xif test $# -eq 1; then X FILE=`expr $1 : '$.*$\.Z' '|' $1` X zcat $FILE | diff $OPTIONS - $FILE X STAT="$?" Xelif test $# -eq 2; then X case "$1" in X *.Z) case "$2" in X *.Z) F=`basename $2 .Z` X zcat $2 > /tmp/$F.$$ X zcat $1 | diff $OPTIONS - /tmp/$F.$$ X STAT="$?";; X *) zcat $1 | diff $OPTIONS - $2;; X esac;; X *) case "$2" in X *.Z) zcat $2 | diff $OPTIONS $1 - X STAT="$?";; X *) diff $OPTIONS $1 $2 X STAT="$?";; X esac;; X esac X exit "$STAT" Xelse X echo "Usage: zdiff [diff_options] file [file]" X exit 1 Xfi END_OF_FILE if test 724 -ne `wc -c <'zdiff'`; then echo shar: \"'zdiff'\" unpacked with wrong size! fi chmod +x 'zdiff' # end of 'zdiff' fi if test -f 'zmore' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'zmore'\" else echo shar: Extracting \"'zmore'\" $306 characters$ sed "s/^X//" >'zmore' <<'END_OF_FILE' XFIRST=1 Xfor FILE Xdo X if test $FIRST -eq 0; then X echo "--More--(Next file: $FILE)\c" X stty cbreak -echo X ANS=`dd bs=1 count=1 2>/dev/null` X stty -cbreak echo X echo " " X if test "$ANS" = 'e'; then X exit X fi X fi X echo "------> $FILE <------" X zcat $FILE | more X if test -t; then X FIRST=0 X fi Xdone END_OF_FILE if test 306 -ne `wc -c <'zmore'`; then echo shar: \"'zmore'\" unpacked with wrong size! fi chmod +x 'zmore' # end of 'zmore' fi if test -f 'zmore.1' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'zmore.1'\" else echo shar: Extracting \"'zmore.1'\" $3702 characters$ sed "s/^X//" >'zmore.1' <<'END_OF_FILE' X.TH ZMORE 1 X.SH NAME Xzmore \- file perusal filter for crt viewing of compressed text X.SH SYNOPSIS X.B zmore X[ name ... ] X.SH DESCRIPTION X.I Zmore Xis a filter which allows examination of compressed text files Xone screenful at a time on a soft-copy terminal. XIt normally pauses after each screenful, printing --More-- Xat the bottom of the screen. XIf the user then types a carriage return, one more line is displayed. XIf the user hits a space, Xanother screenful is displayed. Other possibilites are enumerated later. X.PP X.I Zmore Xlooks in the file X.I /etc/termcap Xto determine terminal characteristics, Xand to determine the default window size. XOn a terminal capable of displaying 24 lines, Xthe default window size is 22 lines. X.PP XOther sequences which may be typed when X.I zmore Xpauses, and their effects, are as follows (\fIi\fP is an optional integer Xargument, defaulting to 1) : X.PP X.IP \fIi\|\fP<space> Xdisplay X.I i Xmore lines, (or another screenful if no argument is given) X.PP X.IP ^D Xdisplay 11 more lines (a ``scroll''). XIf X.I i Xis given, then the scroll size is set to \fIi\|\fP. X.PP X.IP d Xsame as ^D (control-D) X.PP X.IP \fIi\|\fPz Xsame as typing a space except that \fIi\|\fP, if present, becomes the new Xwindow size. Note that the window size reverts back to the default at the Xend of the current file. X.PP X.IP \fIi\|\fPs Xskip \fIi\|\fP lines and print a screenful of lines X.PP X.IP \fIi\|\fPf Xskip \fIi\fP screenfuls and print a screenful of lines X.PP X.IP "q or Q" Xquit reading the current file; go on to the next (if any) X.PP X.IP e XWhen the prompt --More--(Next file: X.IR file ) Xis printed, this command causes zmore to exit. X.PP X.IP = XDisplay the current line number. X.PP X.IP \fIi\|\fP/expr Xsearch for the \fIi\|\fP-th occurrence of the regular expression \fIexpr.\fP XIf the pattern is not found, X.I zmore Xgoes on to the next file (if any). XOtherwise, a screenful is displayed, starting two lines before the place Xwhere the expression was found. XThe user's erase and kill characters may be used to edit the regular Xexpression. XErasing back past the first column cancels the search command. X.PP X.IP \fIi\|\fPn Xsearch for the \fIi\|\fP-th occurrence of the last regular expression entered. X.PP X.IP !command Xinvoke a shell with \fIcommand\|\fP. XThe character `!' in "command" are replaced with the Xthe previous shell command. The sequence "\\!" is replaced by "!". X.PP X.IP ":q or :Q" Xquit reading the current file; go on to the next (if any) X(same as q or Q). X.PP X.IP . X(dot) repeat the previous command. X.PP XThe commands take effect immediately, i.e., it is not necessary to Xtype a carriage return. XUp to the time when the command character itself is given, Xthe user may hit the line kill character to cancel the numerical Xargument being formed. XIn addition, the user may hit the erase character to redisplay the X--More-- message. X.PP XAt any time when output is being sent to the terminal, the user can Xhit the quit key (normally control\-\\). X.I Zmore Xwill stop sending output, and will display the usual --More-- Xprompt. XThe user may then enter one of the above commands in the normal manner. XUnfortunately, some output is lost when this is done, due to the Xfact that any characters waiting in the terminal's output queue Xare flushed when the quit signal occurs. X.PP XThe terminal is set to X.I noecho Xmode by this program so that the output can be continuous. XWhat you type will thus not show on your terminal, except for the / and ! Xcommands. X.PP XIf the standard output is not a teletype, then X.I zmore Xacts just like X.I zcat, Xexcept that a header is printed before each file. X.SH FILES X.DT X/etc/termcap Terminal data base X.SH "SEE ALSO" Xmore(1), zcat(1), compress(1), uncompress(1) END_OF_FILE if test 3702 -ne `wc -c <'zmore.1'`; then echo shar: \"'zmore.1'\" unpacked with wrong size! fi # end of 'zmore.1' fi if test -f 'patchlevel.h' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'patchlevel.h'\" else echo shar: Extracting \"'patchlevel.h'\" $21 characters$ sed "s/^X//" >'patchlevel.h' <<'END_OF_FILE' X#define PATCHLEVEL 0 END_OF_FILE if test 21 -ne `wc -c <'patchlevel.h'`; then echo shar: \"'patchlevel.h'\" unpacked with wrong size! fi # end of 'patchlevel.h' fi echo shar: End of archive 2 $of 2$. cp /dev/null ark2isdone MISSING="" for I in 1 2 ; do if test ! -f ark${I}isdone ; then MISSING="${MISSING} ${I}" fi done if test "${MISSING}" = "" ; then echo You have unpacked both archives. rm -f ark[1-9]isdone else echo You still need to unpack the following archives: echo " " ${MISSING} fi ## End of shell archive. exit 0 -- Kent Landfield INTERNET: kent@sparky.IMD.Sterling.COM Sterling Software, IMD UUCP: uunet!sparky!kent Phone: (402) 291-8300 FAX: (402) 291-4362 Please send comp.sources.misc-related mail to kent@uunet.uu.net. exit 0 # Just in case... -- Kent Landfield INTERNET: kent@sparky.IMD.Sterling.COM Sterling Software, IMD UUCP: uunet!sparky!kent Phone: (402) 291-8300 FAX: (402) 291-4362 Please send comp.sources.misc-related mail to kent@uunet.uu.net.