252 lines
11 KiB
Plaintext
252 lines
11 KiB
Plaintext
**************************************************************************
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**************************************************************************
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** **
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** The FreeBSD Project has chosen to redistribute and modify Less under **
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** the 'Less License' (as described in the 'LICENSE' file). **
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** **
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**************************************************************************
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**************************************************************************
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Less, version 581.2
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This is the distribution of less, version 581.2, released 28 Apr 2021.
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This program is part of the GNU project (http://www.gnu.org).
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This program is free software. You may redistribute it and/or
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modify it under the terms of either:
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1. The GNU General Public License, as published by the Free
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Software Foundation; either version 3, or (at your option) any
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later version. A copy of this license is in the file COPYING.
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or
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2. The Less License, in the file LICENSE.
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Please report any problems at https://github.com/gwsw/less/issues.
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See https://greenwoodsoftware.com/less for the latest info.
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Source repository is at https://github.com/gwsw/less.git.
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=========================================================================
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The formatted manual page is in less.man.
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The manual page nroff source is in less.nro.
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Major changes made since the last posted version are in NEWS.
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=======================================================================
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INSTALLATION (Unix & Linux systems only):
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1. Move the distributed source to its own directory and unpack it,
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if you have not already done so.
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2. If you are building from a clone of a git repository,
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type "make -f Makefile.aut".
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If you are building from a numbered release package (a tar or
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zip file with a name like less-999.tar.gz or less-999.zip downloaded
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from greenwoodsoftware.com, not from github), you should skip this step.
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3. Type "sh configure".
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This will generate a Makefile and a defines.h.
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Warning: if you have a GNU sed, make sure it is version 2.05 or later.
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The file INSTALL describes the usage of the configure program in
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general. In addition, these options to configure are supported:
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--with-editor=program
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Specifies the default editor program used by the "v" command.
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The default is "vi".
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--with-regex=lib
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Specifies the regular expression library used by less for pattern
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matching. The default is "auto", which means the configure program
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finds a regular expression library automatically. Other values are:
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gnu Use the GNU regex library.
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pcre Use the PCRE library.
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pcre2 Use the PCRE2 library.
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posix Use the POSIX-compatible regcomp.
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regcmp Use the regcmp library.
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re_comp Use the re_comp library.
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regcomp Use the V8-compatible regcomp.
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regcomp-local Use Henry Spencer's V8-compatible regcomp
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(source is supplied with less).
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none No regular expressions, only simple string matching.
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--with-secure
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Builds a "secure" version of less, with some features disabled
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to prevent users from viewing other files, accessing shell
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commands, etc.
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4. It is a good idea to look over the generated Makefile and defines.h
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and make sure they look ok. If you know of any peculiarities of
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your system that configure might not have detected, you may fix the
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Makefile now. Take particular notice of the list of "terminal"
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libraries in the LIBS definition in the Makefile; these may need
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to be edited. The terminal libraries will be some subset of
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-lncurses -lcurses -ltermcap -ltermlib
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If you wish, you may edit defines.h to remove some optional features.
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If you choose not to include some features in your version, you may
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wish to edit the manual page "less.nro" and the help page "less.hlp"
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to remove the descriptions of the features which you are removing.
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If you edit less.hlp, you should run "make -f Makefile.aut help.c".
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5. Type "make" and watch the fun.
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6. If the make succeeds, it will generate the programs "less",
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"lesskey" and "lessecho" in your current directory. Test the
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generated programs.
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7. When satisfied that it works, if you wish to install it
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in a public place, type "make install".
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The default install destinations are:
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Executables (less, lesskey, lessecho) in /usr/local/bin
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Documentation (less.nro, lesskey.nro) in /usr/local/man/man1
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If you want to install any of these files elsewhere, define
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bindir and/or mandir to the appropriate directories.
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Note to hackers: comments noting possible improvements are enclosed
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in double curly brackets {{ like this }}.
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(Note that the above note was originally written at a time when
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"hackers" most commonly meant "enthusiastic and dedicated computer
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programmers", not "persons who attempt to circumvent computer security".)
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=======================================================================
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INSTALLATION (MS-DOS systems only,
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with Microsoft C, Borland C, or DJGPP)
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1. Move the distributed source to its own directory.
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Depending on your compiler, you may need to convert the source
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to have CR-LF rather than LF as line terminators.
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2. If you are using Microsoft C, rename MAKEFILE.DSU to MAKEFILE.
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If you are using Borland C, rename MAKEFILE.DSB to MAKEFILE.
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If you are using DJGPP, rename MAKEFILE.DSG to MAKEFILE.
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3. Look at MAKEFILE to make sure that the definitions for CC and LIBDIR
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are correct. CC should be the name of your C compiler and
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LIBDIR should be the directory where the C libraries reside (for
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Microsoft C only). If these definitions need to be changed, you can
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either modify the definitions directly in MAKEFILE, or set your
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environment variables CC and/or LIBDIR to override the definitions
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in MAKEFILE.
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4. If you wish, you may edit DEFINES.DS to remove some optional features.
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If you choose not to include some features in your version, you may
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wish to edit the manual page LESS.MAN and the help page HELP.C
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to remove the descriptions of the features which you are removing.
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5. Run your "make" program and watch the fun.
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If your "make" requires a flag to import environment variables,
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you should use that flag.
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If your compiler runs out of memory, try running "make -n >cmds.bat"
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and then run cmds.bat.
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6. If the make succeeds, it will generate the programs "LESS.EXE" and
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"LESSKEY.EXE" in your current directory. Test the generated programs.
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7. When satisfied that it works, you may wish to install LESS.EXE and
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LESSKEY.EXE in a directory which is included in your PATH.
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=======================================================================
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INSTALLATION (Windows-95, Windows-98 and Windows-NT systems only,
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with Borland C or Microsoft Visual C++)
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1. Move the distributed source to its own directory.
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2. If you are using Borland C, rename Makefile.wnb to Makefile.
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If you are using Microsoft Visual C++, rename Makefile.wnm to Makefile.
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3. Check the Makefile to make sure the definitions look ok.
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4. If you wish, you may edit defines.wn to remove some optional features.
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If you choose not to include some features in your version, you may
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wish to edit the manual page less.man and the help page help.c
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to remove the descriptions of the features which you are removing.
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5. Type "make" and watch the fun.
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6. If the make succeeds, it will generate the programs "less.exe" and
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"lesskey.exe" in your current directory. Test the generated programs.
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7. When satisfied that it works, if you wish to install it
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in a public place, type "make install".
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See step 6 of the Unix installation instructions for details
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on how to change the default installation directories.
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=======================================================================
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INSTALLATION (OS/2 systems only,
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with EMX C)
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1. Move the distributed source to its own directory.
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2. Rename Makefile.o2e to Makefile.
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3. Check the Makefile to make sure the definitions look ok.
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4. If you wish, you may edit defines.o2 to remove some optional features.
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If you choose not to include some features in your version, you may
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wish to edit the manual page less.man and the help page help.c
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to remove the descriptions of the features which you are removing.
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5. Type "make" and watch the fun.
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6. If the make succeeds, it will generate the programs "less.exe" and
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"lesskey.exe" in your current directory. Test the generated programs.
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7. Make sure you have the emx runtime installed. You need the emx DLLs
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emx.dll and emxlibcs.dll and also the termcap database, termcap.dat.
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Make sure you have termcap.dat either in the default location or
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somewhere in a directory listed in the PATH or INIT environment
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variables.
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8. When satisfied that it works, you may wish to install less.exe,
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lesskey.exe and scrsize.exe in a directory which is included in
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your PATH. scrsize.exe is required only if you use a terminal
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emulator such as xterm or rxvt.
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=======================================================================
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INSTALLATION (OS-9 systems only,
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with Microware C or Ultra C)
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1. Move the distributed source to its own directory.
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2. If you are using Microware C, rename Makefile.o9c to Makefile.
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If you are using Ultra C, rename Makefile.o9u to Makefile.
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3. Check the Makefile to make sure the definitions look ok.
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4. If you wish, you may edit defines.o9 to remove some optional features.
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If you choose not to include some features in your version, you may
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wish to edit the manual page less.man and the help page help.c
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to remove the descriptions of the features which you are removing.
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5. Type "dmake" and watch the fun.
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The standard OS-9 "make" will probably not work. If you don't
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have dmake, you can get a copy from os9archive.rtsi.com.
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6. If the make succeeds, it will generate the programs "less" and
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"lesskey" in your current directory. Test the generated programs.
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7. When satisfied that it works, if you wish to install it
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in a public place, type "dmake install".
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See step 6 of the Unix installation instructions for details
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on how to change the default installation directories.
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=======================================================================
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ACKNOWLEDGMENTS:
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Some versions of the less distribution are packaged using
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Info-ZIP's compression utility.
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Info-ZIP's software is free and can be obtained as source
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code or executables from various anonymous-ftp sites,
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including ftp.uu.net:/pub/archiving/zip.
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