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5 - Textbook
5.1 - Returning to home directory *
5.2 - Working with directories **
5.3 - Information about the files *
5.4 - Finding files **
5.5 - Finding files *
5.6 - Displaying part of a file content *
5.7 - Displaying certain lines of a file *
5.8 - Comparing files *
5.9 - Displaying file's name without extension *
5.10 - Counting bytes of files *
5 - Exercises
07 - Textbook
7.1 - Using metacharacters in filenames *
7.2 - Using metacharacters in filenames *
7.3 - Using metacharacters in filenames *
7.4 - Using metacharacters in filenames *
7.5 - Using metacharacters in filenames *
7.6 - Changing environment variables *
7.7 - Changing the working directory *
7.8 - Changing the primary command prompt string ***
7.9 - Working with positional parameters **
7.10 - Working with positional parameters *
7.11 - Working with variables *
7.12 - Working with variables *
07 - Exercises
8 - Textbook
8.1 - Redirecting the standard output *
8.2 - Manipulating the standard input and output **
8.3 - Counting files *
8.4 - Finding files **
8.5 - Working with the contents of a file ***
8.6 - Working with the contents of a file ***
8.7 - Working with the contents of a file **
8.8 - Working with the contents of a file ***
8.9 - Classifying files ****
8.10 - Filtering logged users ***
8.11 - Counting files ***
8.12 - Selecting lines from a file **
8.13 - Sorting the content of a file **
8.14 - Displaying the exit status of a command **
8.15 - Setting exit status **
8 - Exercises
9 - Textbook
9.1 - Counting files in an user's home directory **
9.2 - Asking the user for input ***
9.3 - Asking the user for input ***
9.4 - Iterating through numbers **
9.5 - Iterating through numbers **
9.6 - Iterating through numbers **
9.7 - Listing files in a directory **
9.8 - Moving files ****
9.9 - Moving files ****
9.10 - Sending messages to user ****
9.11 - Sending messages to users **
9.12 - Renaming files ***
9.13 - Renaming files ****
9 - Exercises
10 - Textbook
10.1 - Doing integer arithmetic *
10.2 - Doing integer arithmetic *
10.3 - Doing integer arithmetic **
10.4 - Checking which users are logged in **
10.5 - Moving files ***
10.6 - Printing odd numbers ***
10.7 - Printing positional parameters **
10.8 - Replacing strings ***
10.9 - Finding usernames ***
10 - Exercises
11 - Textbook
11.1 - Modifying file permissions *
11.2 - Creating a file with specified permissions **
11.3 - Calculate permissions in numeric mode *
11.4 - Calculate permissions in numeric mode *
11.5 - Calculate permissions in numeric mode *
11.6 - Permissions representation *
11.7 - Permissions representation *
11.8 - Permissions representation *
11.9 - Checking file permissions ****
11.10 - Changing a file's owner or group **
11.11 - Copying file permissions ***
11.12 - Changing permissions to multiple files *
11.13 - Changing file ownership ***
11 - Exercises
12 - Textbook
12.1 - Checking for running processes **
12.2 - Listing user processes **
12.3 - Listing the number of processes **
12.4 - Listing the number of processes of the root user **
12.5 - Listing the users with running processes **
12.6 - Displaying the number of running cat processes **
12.7 - Displaying the command associated with a given PID *
12.8 - Checking the number of running processes of a user ****
12 - Exercises
13 - Textbook
13.1 - ls function *
13.2 - Looping through array **
13.3 - Accessing array values **
13.4 - Accessing associative array values **
13.5 - Displaying the byte size of files **
13.6 - Displaying the keys of an associative array **
13.7 - Displaying the contents of an associative array ***
13.8 - Displaying the contents of an associative array ***
13.9 - Greatest common divisor ***
13.10 - Changing ownership of files ****
13.11 - Defining a matrix **
13.12 - Rotating a matrix ***
13 - Exercises
14 - Textbook
14.1 - Reading a file's content ****
14.2 - Appending the content of file to another file **
14.3 - Append the contents of a file to another file and replace a specific character with another character ***
14.4 - Copying a file ***
14.5 - Displaying first lines of a file ****
14.6 - Displaying selected characters of a file ****
14.7 - Comparing files ****
14 - Exercises
16 - Textbook
16.1 - Reading a file's content ***
16.2 - Excuting multible commands consecutively **
16.3 - Waiting for child processes to complete execution ***
16.4 - Asynchronous execution of multiple commands ****
16.5 - Writing in a file from a child process ****
16.6 - Conditional execution of commands ****
16.7 - Asynchronized reading from a file ***
16.8 - Checking for new lines from the standard input **
16.9 - Executing command repeatedly **
16 - Exercises