egrep:tldr:9c456
This command is using the egrep
command to search for a specific pattern in multiple files.
Explanation:
-
${search_pattern}
: This is a variable containing the pattern you want to search for. It can be a regular expression or a simple string pattern. -
${filename1} ${filename2} ${filename3}
: These are variables representing the names of the files in which you want to search for the given pattern. You can specify multiple filenames separated by spaces. -
egrep
: It is a command-line utility that searches for patterns in files using extended regular expressions. It is an enhanced version of thegrep
command.
When this command is executed, egrep
will take the value of ${search_pattern}
and search for it in the files specified by ${filename1}
, ${filename2}
, and ${filename3}
. It will then display the matching lines from those files in the output.