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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 ULTRIX

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
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