Development of Bash text utilities: cat, grep.
cat [OPTION] [FILE]...
| No. | Options | Description |
|---|---|---|
| 1 | -b (GNU: --number-nonblank) | numbers only non-empty lines |
| 2 | -e implies -v (GNU only: -E the same, but without implying -v) | but also display end-of-line characters as $ |
| 3 | -n (GNU: --number) | number all output lines |
| 4 | -s (GNU: --squeeze-blank) | squeeze multiple adjacent blank lines |
| 5 | -t implies -v (GNU: -T the same, but without implying -v) | but also display tabs as ^I |
grep [options] template [file_name]
| No. | Options | Description |
|---|---|---|
| 1 | -e | pattern |
| 2 | -i | Ignore uppercase vs. lowercase. |
| 3 | -v | Invert match. |
| 4 | -c | Output count of matching lines only. |
| 5 | -l | Output matching files only. |
| 6 | -n | Precede each matching line with a line number. |
| 7 | -h | Output matching lines without preceding them by file names. |
| 8 | -s | Suppress error messages about nonexistent or unreadable files. |
| 9 | -f file | Take regexes from a file. |
| 10 | -o | Output the matched parts of a matching line. |
You need to develop a cat utility:
- Support of all flags (including GNU versions) specified above
- The source, header, and build files must be placed in the src/cat/ directory
- The resulting executable file must be placed in the directory src/cat/ and named s21_cat
You need to develop the grep utility:
- Support of the following flags:
-e,-i,-v,-c,-l,-n - Only pcre or regex libraries can be used for regular expressions
- The source, header and make files must be placed in the src/grep/ directory
- The resulting executable file must be placed in the directory src/grep/ and named s21_grep
Bonus assignment for extra points. You need to develop the grep utility:
- Support of all flags, including:
-h,-s,-f,-o - Only pcre or regex libraries can be used for regular expressions
- The source, header and make files must be placed in the src/grep/ directory
- The resulting executable file must be placed in the directory src/grep/ and named s21_grep
Bonus assignment for extra points. You need to develop the grep utility:
- Support of all flags, including their pair combinations (e.g.
-iv,-in) - Only pcre or regex libraries can be used for regular expressions
- The source, header and make files must be placed in the src/grep/ directory
- The resulting executable file must be placed in the directory src/grep/ and named s21_grep