How do you comment multiple lines in shell script?
How do you comment 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 I comment 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 I comment in a bash shell 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.
Can you put comments in SQL?
In SQL, you can comment your code just like any other language. Comments can appear on a single line or span across multiple lines.
How do I comment a query in MySQL?
In MySQL, a comment started with — symbol is similar to a comment starting with # symbol. When using the — symbol, the comment must be at the end of a line in your SQL statement with a line break after it. This method of commenting can only span a single line within your SQL and must be at the end of the line.
Are multi line comments supported in hive script?
No, Multi-line comments are not supported in Hive.
How do I comment multiple lines in MySQL workbench?
MySQL supports three comment styles:
- From a ‘– ‘ to the end of the line. The double dash-comment style requires at least whitespace or control character (space, tab, newline, etc) after the second dash.
- From a ‘#’ to the end of the line.
- C-style comment /**/ can span multiple lines.
HOW DOES A comment can begin in a shell script file Mcq?
Explanation: When the comment character (#) is placed anywhere in a line; the shell ignores all characters on its right. However, this rule doesn’t apply to the first line which is the interpreter line. It always begins with #! and followed by the pathname of the shell to be used for running the script.
How do you comment 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 do you comment out a line in SQL?
To comment out lines of code in SQL Server Management Studio (SSMS) Query Window, select lines of code you want to comment out and hit the keyboard shortcut ‘CTRL+K’ followed by ‘CTRL+C’. You can also select the lines of code and press the ‘Comment out the selected lines.’ button:
What is comment line in SQL?
There are two styles to comments which can be used in SQL/PL: – The SQL-style or in-line comment, which is preceded by two dashes. – The 2nd style is known as C-style comment. It is placed between an open comment (/*) and a close comment (*/) tag.
How to comment in SQL?
Simple Example. If you run this code,the line of “–Show all data” is not run.
What does comment out mean in SQL?
“Comment out” means to use comment syntax to remove something from the parsed code. “Uncomment” is the reverse operation. They are both the correct expression for their respective referents.
