ddidderr/zstd-rs
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Implement more gzip compatibility (#3037)

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-n --no-name is the current behavior already, so we can implement
this as a noop.

--best is an alias for -9 in gzip

add basic cli tests.
This commit is contained in:
Dirk Müller
2022-02-09 23:09:18 +01:00
parent caf2fa170b
commit e653e97f77
4 changed files with 69 additions and 10 deletions
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programs/zstd.1
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@@ -217,6 +217,17 @@ If input directory contains "\.\.", the files in this directory will be ignored\
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.IP "" 0
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.SS "gzip Operation modifiers"
When invoked via a \fBgzip\fR symlink, \fBzstd\fR will support further options that intend to mimic the \fBgzip\fR behavior:
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.TP
\fB\-n\fR, \fB\-\-no\-name\fR
do not store the original filename and timestamps when compressing a file\. This is the default behavior and hence a no\-op\.
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.TP
\fB\-\-best\fR
alias to the option \fB\-9\fR\.
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.SS "Restricted usage of Environment Variables"
Using environment variables to set parameters has security implications\. Therefore, this avenue is intentionally restricted\. Only \fBZSTD_CLEVEL\fR and \fBZSTD_NBTHREADS\fR are currently supported\. They set the compression level and number of threads to use during compression, respectively\.
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