Shell-Script-cheatsheet
Navigating your filesystem
| # | Command | Action |
|---|---|---|
| 1. | pwd |
To get the path of directory you are in |
| 2. | ls |
List the contents of the directory |
| 3. | ls -lh |
Displays the details of the files in a folder |
| 4. | ls -a |
Displays hidden files as well |
| 5. | ls -R -F |
List the files everything in the directory (nested) |
| 6. | cd [path to the directory] |
Move to the directory |
| 7. | cd .. |
Move to the parent directory one level above |
| 8. | cd ../.. |
Move to the parent directory two levels above |
Create, Copy, Move, Rename, Delete files and directories
| # | Command | Action |
|---|---|---|
| 1. | mkdir [directory] |
To create a new directory in the current directory |
| 2. | touch [filename].txt |
To create the file |
| 3. | open [filename].txt |
Opens the file |
| 4. | cp [filename] [new_filename] |
Copy the file |
| 5. | cp -R [foldername]/ [new_foldername] |
Copy folders |
| 6. | mv [filename] [directory] |
Move file to the folder |
| 7. | mv [foldername] [foldername] |
Move folder |
| 8. | mv [filename] [new filename] |
Rename the file/folder |
| 9. | rm [filename] |
Delete the file |
| 10. | rmdir [directory name] |
Delete the directory |
| 11. | rm [filename] |
Remove the file |
| 12. | rm -r [foldername] |
Remove the folder |
| 13. | rm -rf [foldername] |
Remove the file |
Find command
| # | Command | Action |
|---|---|---|
| 1. | find . | Shows all the files in the directory in a tree structure |
| 2. | find . -type d | Shows only the directories |
| 3. | find . -type f | Shows only files |
| 4. | find . -type f -name "<filename.txt>" | Shows the path to the file |
| 5. | find . -type f -name "test*" | Shows all the files starting with test (case sensitive) |
| 6. | find . -type f -iname "test*" | Shows all the files case insensitive of the name |
| 7. | find . -type f -mmin -n | Returns the files modified in last n mins |
| 8. | find . -type f -mmin +1 -mmin -5 | Returns the files modified more than 1 min and less than 5 mins |
| 9. | find . -type f -mtime +20 | Returns the files modified more than 20 days ago |
| 10. | find . -size +5M | Shows files bigger than 5MB |
| 11. | find . -empty | Shows empty files |
| 12. | find . -type f -name "*.jpg" -maxdepth 1 | Shows files in current directory only as maxdepth is 1 |
| 13. | find . -type f -name "*.jpg" -maxdepth 1 -exec rm {} + | Removes the files ending with .jpg |
Grep command
| # | Command | Action |
|---|---|---|
| 1. | grep "Harshith" names.txt | Returns the word from names.txt (Harshith, HarshithReddy) |
| 2. | grep -w "Harshith names.txt | Returns only when Harshith is a word (Harshith) |
| 3. | grep -wi "Harshith names.txt | Returns only when Harshith is a word and is also case insensitive (harshith, Harshith) |
| 4. | grep -win "Harshith names.txt | Returns line numbers as well when Harshith is a word (Harshith) |
| 5. | grep -win -A n "Harshith names.txt | Returns n lines after |
| 6. | grep -win -B n "Harshith names.txt | Returns n lines before |
| 7. | grep -win -C n "Harshith names.txt | Returns n lines in context |