London | 26-SDC-March | Zobeir Rigi | Sprint 1 | Individual shell tools by Zobeir-Rigi · Pull Request #400 · CodeYourFuture/Module-Tools

Zobeir-Rigi · 2026-03-20T17:34:56Z

Summary

Implemented individual shell tool exercises, including ls, cat, wc, grep, sed, and awk. Practised file navigation and text processing using standard Unix commands.

Checklist

I have titled my PR correctly
My changes meet the requirements of the task
I have tested my changes
My changes follow the style guide

SlideGauge · 2026-04-16T22:23:43Z


 # TODO: Write a command to output the contents of the helper-1.txt file inside the helper-files directory to the terminal.
 # The output of this command should be "Once upon a time...".
+ cd helper-files


do we have the helper-files folder inside the cat directory?

No, it's in a different folder called the helper-files directory.

SlideGauge · 2026-04-16T22:26:27Z

 # It looked delicious.
 # I was tempted to take a bite of it.
 # But this seemed like a bad idea...
+cat *.txt


do we have txt files inside cat directory?

No, that's why I cd to the helper-files directory first.

SlideGauge · 2026-04-16T22:26:52Z

 # I was tempted to take a bite of it.
 # But this seemed like a bad idea...
+cat *.txt
+pwd should be in the helper-files directory


what will happen with this line during script execution?

cat is a commond to print file contents
pwd, I'm just making sure to be in the related directory.

SlideGauge · 2026-04-16T22:27:34Z

 # 1 It looked delicious.
 # 2 I was tempted to take a bite of it.
 # 3 But this seemed like a bad idea...
+cat -n  helper-3.txt


Do we have helper-3.txt file inside the directory?

All txt files are in the helper-files directory.

SlideGauge · 2026-04-16T22:28:41Z

 # 3 It looked delicious.
 # 4 I was tempted to take a bite of it.
 # 5 But this seemed like a bad idea...
+cat * | nl


What is the path to the folder we want to work with?

helper-files directory, which is in the individual-shell-tools folder.

SlideGauge · 2026-04-16T22:32:06Z


 # TODO: Write a command to output every line in dialogue.txt that contains the word Doctor (regardless of case).
 # The output should contain 9 lines.
+grep -ci "Doctor" dialogue.txt


What does -c param stand for in this case?

To count the number of lines, which we don't need to count here, thanks for catching this. only -i is enough.

SlideGauge · 2026-04-16T22:32:57Z


 # TODO: Write a command to output the name of every `.txt` file in this directory which contains a line of dialogue said by the Doctor.
 # The output should contain two filenames.
+grep -l "Doctor" *.txt


What will happen if we meet a line of a patient, for example, saying something like "Hello, Doctor!"

It will also be counted, and I should use this commond instead ===> grep -il "^Doctor:" *.txt
So, making sure started with the Doctor

SlideGauge · 2026-04-16T22:33:18Z


 # TODO: Write a command to output, for each `.txt` file in this directory, how many lines of dialogue the Doctor has.
 # The output should show that dialogue.txt contains 6 lines, dialogue-2.txt contains 2, and dialogue-3.txt contains 0.
+grep -c "Doctor" *.txt


What will happen if we meet a line of a patient, for example, saying something like "Hello, Doctor!"

again it should be "^Doctor:" *.txt

SlideGauge · 2026-04-16T22:38:48Z

 # Your output should contain 3 lines, each with one word and one number on it.
 # The first line should be "Ahmed 4".
+awk '$2=="London" {print $1, $NF}' scores-table.txt
+#$NF → last column


Like for the comment explaining the intention

SlideGauge · 2026-04-16T22:39:22Z

 # Your output should contain 6 lines, each with one word and one number on it.
 # The first line should be "Ahmed 3".
+awk '{print $1, NF-2}' scores-table.txt
+# NF = total number of fields in the line, NF - 2 = removes name + city


Like for explaining the intentions

SlideGauge · 2026-04-16T22:40:42Z

Could you address my comments please, most of them are around the same issue with paths.

Zobeir-Rigi added 6 commits March 20, 2026 17:24

ls done

c6aeb98

cat done

9c086fb

wc done

3004316

grep done

6c21e70

sed done

32b6698

awk done

3bf1f48

Zobeir-Rigi added the Needs Review Trainee to add when requesting review. PRs without this label will not be reviewed. label Mar 20, 2026