- About fgrep : Print lines matching a pattern
- Comes From : grep-2.6.3
Examples:
1. To Interpret PATTERN as an extended regular expression
| $ fgrep –extended-regexp PATTERN $ fgrep -E PATTERN |
2. To Interpret PATTERN as a list of fixed strings
| $ fgrep -F PATTERN $ fgrep –fixed-strings PATTERN |
3. To Interpret PATTERN as a basic regular expression
| $ fgrep -G PATTERN $ fgrep –basic-regexp PATTERN |
4. To Interpret PATTERN as a Perl regular expression
| $ fgrep -P PATTERN $ fgrep –perl-regexp PATTERN |
5. To Use PATTERN as the pattern
| $ fgrep -e PATTERN $ fgrep –regexp=PATTERN |
6. To Obtain patterns from FILE, one per line
| $ fgrep -f FILE, –file=FILE |
7. To Ignore case distinctions in both the PATTERN and the input files.
| $ fgrep -i PATTERN $ fgrep –ignore-case PATTERN |
8. To Invert the sense of matching, to select non-matching lines
| $ fgrep -v PATTERN $ fgrep –invert-match PATTERN |
9. To Select only those lines containing matches that form whole words.
| $ fgrep -w PATTERN $ fgrep –word-regexp PATTERN |
10. To Select only those matches that exactly match the whole line.
| $ fgrep -x PATTERN $ fgrep –line-regexp PATTERN |
11. To ignore the case
| $ fgrep -y PATTERN |
12. To Suppress normal output; instead print a count of matching lines
| $ fgrep -c PATTERN $ fgrep –count PATTERN |
13. To display in color
| $ fgrep –color PATTERN |
14. To Suppress normal output; instead print the name of each input file, from out will not be expected
| $ fgrep -L PATTERN $ fgrep –files-without-match PATTERN |
15. To Suppress normal output; instead print the name of each input file from which output have been printed
| $ fgrep -l PATTERN $ fgrep –files-with-matches PATTERN |
16. To Quiet; do not write anything to standard output Exit immediately with zero status if any match is found
| $ fgrep -q PATTERN $ fgrep –quiet PATTERN $ fgrep –silent PATTERN |
17. To Stop reading a file after NUM matching lines
| $ fgrep -m NUM PATTERN $ fgrep –max-count=NUM PATTERN |
18. To Print only the matched (non-empty) parts of a matching line
| $ fgrep -o PATTERN $ fgrep –only-matching PATTERN |
19. To Suppress error messages about nonexistent or unreadable files.
| $ fgrep -s PATTERN $ fgrep –no-messages PATTERN |
20. To Print the 0-based byte offset within the input file before each line of output.
| $ fgrep -b PATTERN $ fgrep –byte-offset PATTERN |
21. To Print the file name for each match.
| $ fgrep -H PATTERN $ fgrep –with-filename PATTERN |
22. To Suppress the prefixing of file names on output
| $ fgrep -h PATTERN $ fgrep –no-filename PATTERN |
23. To Display input actually coming from standard input as input coming from file LABEL.
| $ fgrep -cd PATTERN | fgrep –label=mysearch -H PATTERN |
24. To Prefix each line of output with the 1-based line number within its input file.
| $ fgrep -n PATTERN $ fgrep –line-number PATTERN |
25. To Make sure that the first character of actual line content lies on a tab stop
| $ fgrep -T PATTERN $ fgrep –initial-tab PATTERN |
26. To Report Unix-style byte offsets
| $ fgrep -u PATTERN $ fgrep –unix-byte-offsets PATTERN |
27. To Output a zero byte instead of the character that normally follows a file name.
| $ fgrep -Z PATTERN $ fgrep –null PATTERN |
28. To Print NUM lines of trailing context after matching lines
| $ fgrep -A NUM PATTERN $ fgrep –after-context=NUM PATTERN |
29. To Print NUM lines of leading context before matching lines
| $ fgrep -B NUM PATTERN $ fgrep –before-context=NUM PATTERN |
30. To Print NUM lines of output context
| $ fgrep -C NUM PATTERN $ fgrep –context=NUM PATTERN |
31. To Process a binary file as if it were text
| $ fgrep -a PATTERN /tmp/bin $ fgrep -text PATTERN /tmp/bin |
32. To assume that the file is of type TYPE.
| $ fgrep –binary-files=TYPE PATTERN |
33. To If an input file is a device, FIFO or socket, use ACTION to process it
| $ fgrep -D ACTION PATTERN $ fgrep –devices=ACTION PATTERN |
34. To If an input file is a directory, use ACTION to process it
| $ fgrep -d ACTION PATTERN $ fgrep –directories=ACTION PATTERN |
35. To Skip files whose base name matches GLOB
| $ fgrep –exclude=GLOB PATTERN |
36. To Skip files whose base name matches any of the file-name globs read from FILE
| $ fgrep –exclude-from=FILE PATTERN |
37. To Exclude directories matching the pattern DIR from recursive searches
| $ fgrep –exclude-dir=DIR PATTERN |
38. To Process a binary file as if it did not contain matching data
| $ fgrep -I PATTERN |
39. To Search only files whose base name matches GLOB
| $ fgrep –include=GLOB |
40. To Read all files under each directory, recursively
| $ fgrep -r PATTERN $ fgrep -R PATTERN |
41. To Use line buffering on output
| $ fgrep –line-buffered PATTERN |
42. To If possible, use the mmap system call to read input, instead of the default read
| $ fgrep –mmap PATTERN |
43. To Treat the file(s) as binary
| $ fgrep -U /tmp/file PATTERN $ fgrep –binary /tmp/file PATTERN |
44. To Treat the input as a set of lines
| $ fgrep -z PATTERN $ fgrep –null-data PATTERN |
45. To display the help
| $ fgrep -h |
46. To print the version number of the grep
| $ fgrep -V |
