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@@ -1,46 +1,46 @@ Description Zutils is a collection of utilities able to process any combination of -compressed and uncompressed files transparently. If any given file, -including standard input, is compressed, its decompressed content is -used. Compressed files are decompressed on the fly; no temporary files -are created. +compressed and uncompressed files transparently. If any file given, +including standard input, is compressed, its decompressed content is used. +Compressed files are decompressed on the fly; no temporary files are +created. These utilities are not wrapper scripts but safer and more efficient C++ -programs. In particular the '--recursive' option is very efficient in +programs. In particular the option '--recursive' is very efficient in those utilities supporting it. -The utilities provided are zcat, zcmp, zdiff, zgrep, ztest and zupdate. -The formats supported are bzip2, gzip, lzip and xz. -Zutils uses external compressors. The compressor to be used for each -format is configurable at runtime. +The utilities provided are zcat, zcmp, zdiff, zgrep, ztest, and zupdate. +The formats supported are bzip2, gzip, lzip, and xz. +Zutils uses external compressors. The compressor to be used for each format +is configurable at runtime. -zcat, zcmp, zdiff, and zgrep are improved replacements for the shell -scripts provided by GNU gzip. ztest is unique to zutils. zupdate is -similar to gzip's znew. +zcat, zcmp, zdiff, and zgrep are improved replacements for the shell scripts +provided by GNU gzip. ztest is unique to zutils. zupdate is similar to +gzip's znew. -NOTE: Bzip2 and lzip provide well-defined values of exit status, which -makes them safe to use with zutils. Gzip and xz may return ambiguous -warning values, making them less reliable back ends for zutils. +NOTE: Bzip2 and lzip provide well-defined values of exit status, which makes +them safe to use with zutils. Gzip and xz may return ambiguous warning +values, making them less reliable back ends for zutils. -FORMAT NOTE 1: The '--format' option allows the processing of a subset +FORMAT NOTE 1: The option '--format' allows the processing of a subset of formats in recursive mode and when trying compressed file names: 'zgrep foo -r --format=bz2,lz somedir somefile.tar'. -FORMAT NOTE 2: If the '--force-format' option is given, the files are +FORMAT NOTE 2: If the option '--force-format' is given, the files are passed to the corresponding decompressor without verifying their format, allowing for example the processing of compress'd (.Z) files with gzip: 'zcmp --force-format=gz file.Z file.lz'. -LANGUAGE NOTE: Uncompressed = not compressed = plain data; it may never -have been compressed. Decompressed is used to refer to data which have -undergone the process of decompression. +LANGUAGE NOTE: Uncompressed = not compressed = plain data; it may never have +been compressed. Decompressed is used to refer to data which have undergone +the process of decompression. -Copyright (C) 2009-2019 Antonio Diaz Diaz. +Copyright (C) 2009-2020 Antonio Diaz Diaz. This file is free documentation: you have unlimited permission to copy, -distribute and modify it. +distribute, and modify it. The file Makefile.in is a data file used by configure to produce the Makefile. It has the same copyright owner and permissions that configure |