Some exercises to practice with the Linux CLI.
Run Firefox in background.
Put Firefox in foreground.
"Kill" Firefox.
Obtain a list of the first 3 files in "exercise4" folder, in alphabetical order.
Change the permissions of "exercise5/secret.txt" so that only the owner group can read it.
Change the order of the third and fourth fields in "exercise6/users.csv".
Create "exercise7/new-users.csv" after discarding the last field (and the header altogether) of "exercise7/users.csv".
In one terminal, write contents to "exercise8/write-to-me.txt". In another terminal, display the contents of that file, as they are written.
Choose any process currently running, and find out which directory it was launched from.
Use ls and tr to obtain transform the names of the files in "exercise10" to uppercase.
List all files in exercise11 and replace all spaces with underscores in their names.
Obtain the list of applications identified by the ports they use.
Take the list from Exercise 12 and sort it alphabetically.
Take the list from Exercise 13 and remove duplicates.