20 Useful GREP Commands
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grep -V |
Show the version of Grep command like “grep (GNU grep) 2.14” |
grep "search string" file_name |
Search for the given string. |
grep "search string" file_name_* |
Search given string in multiple files. |
grep -i "search string" file_name |
Ignore case search. |
grep -w "This is a test" file_name |
Full world search. |
grep -r "search string" folder_name |
Search in all files recursively including sub-folders. |
grep -v "search string" file_name |
Print the lines that do not match the search string. |
grep -c "search string" file_name |
Count the number of matches. |
grep -vc "search string" file_name |
Count the number of matches that doesn’t matches. |
grep -A 2 "search string" file_name |
Print 2 lines after the match of search string. |
grep -B 2 "search string" file_name |
Print 2 lines before the match of search string. |
grep -C 2 "search string" file_name |
Print 2 lines after and before the match of search string. |
grep -l "search string" file_name |
Print only name of files that contain the matched search string. |
grep -o "search string" file_name |
Show only the part of a line matching. |
grep -b "search string" file_name |
Show the string position/offset. |
grep -n "search string" file_name |
Show line number. |
grep -H "search string" file_name |
Print file name for each matched search string. |
grep -lhr "search string" folder_name |
List all the files that matched the search string. |
grep -f file1 file2 |
Obtain string pattern from file1 that need to be searched in file2 |
grep -L "search string" folder_name |
List files that doesn’t include the search string. |
