How do you comment out a line in Unix?

How do you comment out a line in Linux?

Whenever you want to comment a line, put a # in an appropriate place in a file. Anything beginning after # and ending at the end of the line won’t get executed. This comments out the complete line. This comments out only the last part of the line starting at #.

How do you comment out a line in Unix script?

You can comment by placing a octothorpe # or a : (colon) at the start of the line, and then your comment. # can also go after some code on a line to add a comment on the same line as the code.

How do you comment a line in a shell script?

A single-line comment starts with hashtag symbol with no white spaces (#) and lasts till the end of the line. 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 multiple lines in shell 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 you comment multiple lines in Linux?

Commenting Multiple Lines

  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 do you comment a line in a config file?

To enter comments in a configuration file, use a comment character and enter the comment text anywhere to the right of the comment character on the same line. Valid comment characters are a semicolon (;), a pound sign (#), or two hyphens (–). You can start comments in any column of a separate line.

How do you comment multiple lines?

To comment out multiple code lines right-click and select Source > Add Block Comment. ( CTRL+SHIFT+/ ) To uncomment multiple code lines right-click and select Source > Remove Block Comment. ( CTRL+SHIFT+ )

How do you comment multiple lines in Makefile?

‘ # ‘ in a line of a makefile starts a comment. It and the rest of the line are ignored, except that a trailing backslash not escaped by another backslash will continue the comment across multiple lines. A line containing just a comment (with perhaps spaces before it) is effectively blank, and is ignored.

How do you comment a script in Linux?

Comments can be added at the beginning on the line or inline with other code:

  1. # This is a Bash comment. …
  2. # if [[ $VAR -gt 10 ]]; then # echo “Variable is greater than 10.” # fi.
  3. # This is the first line. …
  4. << ‘MULTILINE-COMMENT’ Everything inside the HereDoc body is a multiline comment MULTILINE-COMMENT.

How do I run a shell script?

Steps to write and execute a script

  1. Open the terminal. Go to the directory where you want to create your script.
  2. Create a file with . sh extension.
  3. Write the script in the file using an editor.
  4. Make the script executable with command chmod +x <fileName>.
  5. Run the script using ./<fileName>.

How do you comment out in a script?

You can insert comments and remarks in the script code, or deactivate parts of the script code by using comment marks. All text on a line that follows to the right of // (two forward slashes) will be considered a comment and will not be executed when the script is run.

HOW DOES A comment can begin in a shell script file?

A word or line beginning with # causes that word and all remaining characters on that line to be ignored. These lines aren’t statements for the bash to execute.

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