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Full Discussion: Need assistance with an IF statement to compare a list of SHA keys between two repositories.
Top Forums Shell Programming and Scripting Need assistance with an IF statement to compare a list of SHA keys between two repositories. Post 303035771 by Chubler_XL on Sunday 2nd of June 2019 07:26:58 PM
Old 06-02-2019
Assuming you already have the two file locally (you will need to fetch FileA from the web server using something like wget).
Also that the SHA keys are a string of 64 hex digits (0-9 a-f) which are separated from other text in file by one or more white space characters.

You could collect the keys using grep like this:

Code:
$ grep -Eow '[0-9a-f]{64}' FileA > KeylistA
$ grep -Eow '[0-9a-f]{64}' FileB > KeylistB

Grep can then output any key(s) in KeylistA not in KeyListB like this.
Code:
$ grep -vf KeylistB KeylistA || echo "Files Match"

This User Gave Thanks to Chubler_XL For This Post:
Query
 

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LEARN ABOUT NETBSD

zegrep

ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME

     zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files

SYNOPSIS

     zgrep [grep-flags] [--] pattern [files ...]

     zegrep [grep-flags] [--] pattern [file ...]

     zfgrep [grep-flags] [--] pattern [file ...]

DESCRIPTION

     zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1).

     The grep-flags and pattern arguments are passed on to grep(1).  If an -e flag is found in the grep-flags, zgrep will not look for a pattern
     argument.

     zegrep calls egrep(1), while zfgrep calls fgrep(1).

EXIT STATUS

     In case of missing arguments or missing pattern, 1 will be returned, otherwise 0.

SEE ALSO

     egrep(1), fgrep(1), grep(1), gzip(1), zcat(1)

AUTHORS

     Thomas Klausner <wiz@NetBSD.org>

BSD
								 December 28, 2003							       BSD
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