What does the Linux grep command do?

The Linux grep command is used to find strings that meet the conditions in the file.

The grep command is used to find files whose content contains the specified template style. If the content of a file is found to match the specified template style, the default grep command will display the column containing the template style. If no file name is specified, or if - is given, the grep command reads data from the standard input device.

Syntax:

grep

Parameters:

-a or --text: Do not ignore binary data.

-A or --after-context= : In addition to displaying the column that conforms to the template style, and display the content after the row.

-b or --byte-offset: Mark the number of the first character of the line before displaying the line that matches the style.

-B or --before-context= : In addition to displaying the line that matches the style, the content before that line is displayed.

-c or --count : Count the number of columns that match the style.

-C or --context= or - : In addition to displaying the line that matches the style, and display this line Before and after content.

-d or --directories= : This parameter must be used when specifying directories instead of files to be searched, otherwise the grep command will report information and stop. action.

-e