Explain what does the following function do: void foo(Queue *q, Stack *s) { while (!q->isEmpty() { s->push(q->dequeue); } while (!s.isEmpty()) { q->enqueue(s,pop()); } } Question 2: What command would you use to change to a different directory? Is Bas...
Short for “disk free”, df is a command used to display the free disk space in Linux and other similar operating systems. It is also used to understand and ascertain the file systems that are mounted. Now, you may have noticed that I mentioned that this command can be used to define ...
You can also use Grep withUNIX pipes, allowing you to glue together multiple programs in a single command: catsample.txt|grep'' Good to know:looking to expand your UNIX knowledge? Learn how to screen pagers work in Linux by checking out ourcheatsheet for GNU less. ...
The cat command is used to display contents of a file. You can use opt command to modify its behavior. For example, if you want to display line numbers in output, you can use -n option with cat command ? $ cat -n myfile.txt rm command with opt The rm command is used to delete...
The grep command does what the g/re/p commands did in the editor. It performs a global research for a regular expression and prints it. It is much faster at searching large files. This is the official narrative, but you may also see it described asGlobalRegularExpression (Processor|Parser...
linux@linux-Virtualbox:~$bashbashcopy.txt Now, we can see the file named “bashcopy.txt has been successfully created” along with the content that we printed in it using the “myvar” variable. Conclusion Today, we studied the cat EOF command. We also gone through the working of cat EO...
What does thettycommand do? It prints the name of the terminal you're using. TTY stands for "teletypewriter." What's the story behind the name of the command? That takes a bit more explaining. Teleprinters From the 1800s In the 1830s and 1840s, machines known asteleprinterswere develop...
Question 2: What command would you use to change to a different directory? What is an operating system? What is the primary use of the ping command? Question 5: What command deletes files and directories? What does the following command do when typed in Kali Linux's terminal window? nmap...
If Linux or Windows vulnerabilities failed to be fixed on the HSS console, rectify the fault by following the instructions provided in this section.If your servers are ma
This command sends the output ofthe cat commandas input to the grep command, which then filters the output against a specified string. 5. The AND Operator (&&) This operator functions in similar ways to the semicolon operator except, unlike the semicolon operator, AND operator will execute ...