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21-simple-bash-utils

PREVIEW_WILL_BE_ADDED_LATER.png

Educational project SimpleBashUtils from organization «School 21».

Development of Bash text utilities cat & grep in C programming languages. Developed functions have all the original flags supported, including paired combinations.

USEFUL NOTES:

  • there is a significant difference in work of commands on other operating systems. It was not possible to find best testing option, except for using machines on campus.
  • cat command has the ability to output contents of several files with one command, however, to submit the s21_cat project, it is enough to be able to process one file. There is a small difference in output, which is better to take into account at start, so as not to create crutches later.
[ SPOILER ] Overview of implemented code

s21_cat

TEMPLATE: cat [OPTION] [FILE]

No. Option Description Status
1 -b (GNU: --number-nonblank) numbers only non-empty lines ✅
2 -e подразумевает -v (только GNU: -E то же самое, но без -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 подразумевает -v (GNU: -T то же самое, но без -v) but also display tabs as ^I ✅

s21_grep

TEMPLATE: grep [OPTION] [TEMPLATE] [FILE]

No. Option Description Status
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 ✅

— Thanks to 21-SCHOOL for provided assignment and special learning conditions ✌️🔥

Usage

  1. Clone this repository via
    • SSH git@github.com:rynortheast/21-simple-bash-utils.git or
    • HTTPS https://github.com/rynortheast/21-simple-bash-utils.git
  2. Change code base if necessary
  3. Working with s21_cat:
    • Run make s21_cat to build programm
    • Run make test to run main tests
  4. Working with s21_grep:
    • Run make s21_grep to build programm
    • Run make test to run main tests