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Full Discussion: Issue with user input including * (glob) and sed
Top Forums Shell Programming and Scripting Issue with user input including * (glob) and sed Post 303028448 by RudiC on Tuesday 8th of January 2019 09:30:19 AM
Old 01-08-2019
Some thoughts:



*.*.abc as used for grep seems to be a "glob" but should be a regex same as the one used in the sed script (where, BTW, the . is a wildcard char and should be escaped for the extension separator).
Simply using sed on ALL files (leaving them intact if no pattern found) might be more efficient than grepping through all of them, and then using multiple sed invocations again on those with the pattern - depends on the average file length, and the ratio of files with vs. without pattern.
With awk, you could use one single invocation working on an input stream of all files writing to respective individual temporary output files.
 

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LEARN ABOUT NETBSD

zfgrep

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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