zless:tldr:3f5ae
The command "zless ${file-txt-gz}" is used to view the contents of a compressed text file (.txt.gz) without needing to uncompress it.
Here's how this command works:
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${file-txt-gz}: This is a placeholder for the actual file name. It is usually used in a command line where the file name is given as an argument.
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The dollar sign ($) at the beginning suggests that this is a variable referencing the value held by the "file-txt-gz" variable.
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zless: This is a command-line utility that allows users to view the contents of compressed files. It behaves like the "less" command but is specifically designed to handle compressed files.
Overall, the "zless ${file-txt-gz}" command allows you to display the contents of a compressed text file on the terminal without decompressing it first. It is useful when you want to quickly view the content of a compressed text file without going through the process of decompressing it.