![]() Backslashes preceding characters without a special meaning are left. So you need to provide one more double quote. Within double quotes, backslashes that are followed by one of these characters are removed. It might mean that you have escaped the ending double quotes while running the command. The - in the above command is actually an alias for /dev/stdin. So, for instance, when we use the cat command with a naked -, it will read from stdin: cat - I am being echoed. Please write a letter i.e another: ' in the dquote> prompt. Most of the commands on Linux treat the string - as a synonym for stdin or stdout. It can be frustrating the first few times you see it as you don't really know what is causing it but when trying to make longer code, or the code's output, readable they will both come in handy. The above prompt surely means that you have to de-quote the starting of the quote, i.e. The tilde () refers to the home directory, double periods (.) refers to the parent directory, and a single period (.) refers to the current directory. Would be processed as /home/eric$echo "Hello There my friend" and just output Hello There my friend.īoth of these methods are used to format you're code in a more readable way. Special characters often function like command short-hand, and tell Bash to perform a specific function without having to type out a longer, more verbose command. It basically concatenates two lines together so for example, the following two lines: /home/eric$echo "Hello \ If you set $PS2 to something else, then that is what you will be prompted with.Īnother way to get this prompt to show is by having a backslash ("\") at the end of the line. Back quote The back quote is the one to use when you want to assign output from system commands to variables. The fact that a ">" is printed out for this prompt, and not something else is set by the $PS2 environment variable. This allows you to have one string that spans multiple lines, without having to explicitly type in the "\n" newline character. ![]() It would print out the following output: Hello For instance, if I entered the following command echo "Hello, and then hit enter, it would give me a ">" until I closed the string. Any type of cancer can become terminal cancer. It’s sometimes also called end-stage cancer. In your case, you have a string that hasn't been closed. Terminal cancer refers to cancer that can’t be cured or treated. It separates two programs on a command line (see Pipelines in the bash manual), and the standard output of the first program (on the LHS of the pipe) is connected to the standard input of the second program (on the RHS of the pipe). The ">" symbol in this case means that the terminal wants more input after you've hit the enter key. ![]()
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