zgrep:tldr:f47ac

The zgrep command is used for searching within compressed files. It is similar to the grep command but can handle compressed files directly without needing to decompress them first.

Here is an explanation of the given command:

zgrep -e "${pattern_1}" -e "${pattern_2}" ${path-to-compressed-file}

• zgrep: This is the command itself. It is used to search within compressed files.
• -e "${pattern_1}": This option specifies the first pattern to search for. ${pattern_1} represents a variable that holds the value of the first pattern that needs to be searched. The -e option allows specifying multiple patterns to search for.
• -e "${pattern_2}": This option specifies the second pattern to search for. ${pattern_2} represents a variable that holds the value of the second pattern that needs to be searched.
• ${path-to-compressed-file}: This is the path to the compressed file in which the search needs to be performed. It could be a file in .gz, .bz2, .xz, or .zip format.

In summary, this command searches for occurrences of ${pattern_1} and ${pattern_2} within the compressed file specified by ${path-to-compressed-file}.