Grep tutorial5/31/2023 ![]() ![]() The grep utility is also going to allow you to remove the pattern from the output completely, making it print out the lines in which the pattern is not present. You are going to see an empty output because " gre" does not match perfectly with anything written in the files. However, when we add the " w" option, here is what happens: grep-tutorial]# grep -iw "gre" test5 In this case, " grep" prints out the lines, as the " gre" is a part of the word. grep-tutorial]# grep -i "gre" test5 I am a grep ninja ![]() It is going to enable " grep" to print a match ONLY if the pattern matches correctly. grep-tutorial]# grep -ci "grep" test5Īnother useful option of the grep is the " w" flag. To do this, we are going to be using the " c" flag, which stands for " count", and it is going to show us exactly what we need. Using grep, you can find the number of lines in which the pattern is present. Grep while greping for grep as you grep for grep. To demonstrate the other functions of grep, we created a new file " text5" with the following content: grep-tutorial]# cat test5 This modification is going to generate a list of the file/s containing this specific word. To do so, replace the " o" option with the " l" flag. ![]() Ok, let print out only the file, which contains the pattern " ninja" without the actual string.
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