How comment multiple lines in Linux script?

How comment multiple lines in Linux script? In Shell or Bash shell, we can comment on multiple lines using << and name of comment. we start a comment block with << and name anything to the block and wherever we want to stop the comment, we will simply type the name of the comment.

How do I comment in a bash script? Bash comments can only be done as single-line comment using the hash character # . Every line or word starting by the # sign cause all the following content to be ignored by the bash shell. This is the only way to do a bash comment and ensure text or code is absolutely not evaluated in Bash.

How do you put comments in a script? Creating Single Line Comments

To create a single line comment in JavaScript, you place two slashes “//” in front of the code or text you wish to have the JavaScript interpreter ignore. When you place these two slashes, all text to the right of them will be ignored, until the next line.

How do you comment out in Linux terminal? 

Follow the steps given below for commenting multiple using the terminal.
  1. First, press ESC.
  2. Go to the line from which you want to start commenting.
  3. use the down arrow to select multiple lines that you want to comment.
  4. Now, press SHIFT + I to enable insert mode.
  5. Press # and it will add a comment to the first line.

How comment multiple lines in Linux script? – Additional Questions

How do I comment in a Unix script?

Single-line comments:

If the comment exceeds one line then put a hashtag on the next line and continue the comment. The shell script is commented out prefixing # character for single-line comment.

How do you comment out a line?

Press Ctrl + /
  1. Select all the lines that you would like to be commented.
  2. Press Ctrl + / Two slashes “//” will be added to the front of each line, causing them to be recognized as a comment.

How do I comment out a text file?

1 Answer
  1. Ctrl + / –> All line will be commented in // style comments(Single line comments)
  2. Ctrl + Shift + / –> All line will be commented in /* style(Multi line comment)

How do I comment out a line in host file?

The Short Answer

Or, to “comment out” a line, add a # character to the start of the line. (Note that some languages have different comment formats, so this may not be true if you’re working with a source code file.)

How do you uncomment in terminal?

The “Uncomment” command corresponds to the Uncomment entry in the Advanced submenu of the Edit Menu . It may be called by using the keyboard shortcut “Ctrl+Shift+K“. Its action is to remove the two dashes in front of each selected line if there are such characters.

How do I comment out a line in nano?

And since usually you need to comment out several lines, you can use Alt + a (or Meta + a / Esc + a ) to switch to selection mode which will allow to select several lines. Then comment command will be applied on all selected lines at once.

How do I comment all lines in Vim?

Using the up and down arrow key, highlight the lines you wish to comment out. Once you have the lines selected, press the SHIFT + I keys to enter insert mode. Enter your command symbol, for example, # sign, and press the ESC key. Vim will comment out all the highlighted lines.

How do I comment multiple lines in conf?

First, go to the first line you want to comment, press CtrlV. This will put the editor in the VISUAL BLOCK mode. Then using the arrow key and select until the last line Now press ShiftI, which will put the editor in INSERT mode and then press #.

How do I uncomment a file in Linux?

How do you comment and uncomment?

An alternative way to comment any block of code is to select it, press Alt+Enter and choose Comment selection. The same way works for uncommenting code inside a block comment – set the caret anywhere in the block comment, press Alt+Enter and choose Uncomment.

What is Uncommenting a line?

Therefore to “uncomment” a line of code is done by removing the “//“ and causes the compiler to execute that line of code. Submitted by themeerkat.