{"id":1019,"date":"2018-06-27T10:59:25","date_gmt":"2018-06-27T05:29:25","guid":{"rendered":"https:\/\/www.coimbatorewebhosting.com\/blog\/?p=1019"},"modified":"2019-04-16T16:05:15","modified_gmt":"2019-04-16T10:35:15","slug":"use-the-grep-commands-in-linux","status":"publish","type":"post","link":"https:\/\/coimbatorewebhosting.com\/blog\/use-the-grep-commands-in-linux\/","title":{"rendered":"How to use the GREP commands in Linux"},"content":{"rendered":"

How do I use grep command in Linux operating systems?<\/p>\n

The\u00a0grep command\u00a0which stands for \u201cglobal regular expression print,\u201d processes text line by line and prints any lines which match a specified pattern.<\/p>\n

It is a command line utility for searching plain text data sets for lines that match a regular expression.<\/p>\n

The grep command searches the given file for lines containing a match to the given strings or words. By default, grep displays the matching lines.In addition, three variant programs egrep,<\/strong> fgrep<\/strong> and rgrep<\/strong> are available. egrep<\/strong> is the same as grep -E<\/strong>. fgrep<\/strong> is the same as grep -F<\/strong>. rgrep<\/strong> is the same as grep -r<\/strong>. Direct invocation as either egrep<\/strong> or fgrep<\/strong> is deprecated, but is provided to allow historical applications that rely on them to run unmodified<\/p>\n

Use grep to search for lines of text that match one or many regular expressions, and outputs only the matching lines.<\/p>\n

The name, \u201cgrep\u201d, derives from the command used to perform a similar operation, using the Linux<\/a> text<\/p>\n

editor ed:<\/p>\n

g\/re\/p<\/pre>\n
\n
\n
Table of Contents<\/p>\nToggle<\/span><\/path><\/svg><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n