.TH GZIP 1.SH NAMEgzip, gunzip \- compression and decompression utilities.SH SYNOPSIS.B gzip[.B \-v] [.BI \- level] [.IR file ...].br.B gunzip[.IR file ...].SH DESCRIPTION.B Gzipand.B gunzipperform data compression and decompressioncompatible with the Unix.I gzipfile format,which uses a hybrid Lempel-Ziv 1977 and Huffman compression algorithmcalled `deflate'.If no arguments are given.B gzipcompresses each.I filereplacing it by a file of the samename with the a.B .gzsuffix appended.If no files are given, standard inputand standard output are used..I Levelis a single decimal digit between 1 and 9;higher numbers give better compression.The default.I levelis 6.The.B \-voption causes.B gzipto report the compression ratio of each file thatit compresses..PP.B Gunzipperforms the opposite operation to.BR gzip ;each.I file(which must have a.B .gzsuffix) is uncompressed, and replacedby a file of the same name with the.B .gzsuffix removed. If no files are given,standard input and standard output are used..SH SOURCE.B /appl/cmd/gzip.b.br.B /appl/cmd/gunzip.b.SH SEE ALSO.IR filter (2),.IR filter-deflate (2)