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Top Forums Shell Programming and Scripting how to find the value of a variable in zsh? Post 302523852 by cmp260 on Friday 20th of May 2011 03:41:35 AM
Old 05-20-2011
another question on zsh script

thats great, thanks.
I am also unsure what the first line of the script does, can you tell me?

while [ "$#" -gt 0 ]

I know it basicy means while -while greater than zero- but what does the first part "$# do?

thanks
cmp
 

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BZDIFF(1)						      General Commands Manual							 BZDIFF(1)

NAME
bzcmp, bzdiff - compare bzip2 compressed files SYNOPSIS
bzcmp [ cmp_options ] file1 [ file2 ] bzdiff [ diff_options ] file1 [ file2 ] DESCRIPTION
Bzcmp and bzdiff are used to invoke the cmp or the diff program on bzip2 compressed files. All options specified are passed directly to cmp or diff. If only 1 file is specified, then the files compared are file1 and an uncompressed file1.bz2. If two files are specified, then they are uncompressed if necessary and fed to cmp or diff. The exit status from cmp or diff is preserved. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWbzip | +--------------------+-----------------+ |Interface Stability | Committed | +--------------------+-----------------+ SEE ALSO
cmp(1), diff(1), bzmore(1), bzless(1), bzgrep(1), bzip2(1) BUGS
Messages from the cmp or diff programs refer to temporary filenames instead of those specified. BZDIFF(1)
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