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How do you indicate a comment 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 a shell script?
Comments can be added at the beginning on the line or inline with other code:
- # This is a Bash comment.
- # if [[ $VAR -gt 10 ]]; then # echo “Variable is greater than 10.” # fi.
- # This is the first line.
- << ‘MULTILINE-COMMENT’ Everything inside the HereDoc body is a multiline comment MULTILINE-COMMENT.
Why are comments important in scripting?
Using comments in any script or code is very important to make the script more readable. Comments work as a documentation for the script. The reader can easily understand each step of the script if it is properly commented by the author. Comments are ignored when the script executes.
How do you write a multi line comment 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 a shell script?
Method 1: Using <: 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 are comments skipped in a shell script?
Blank lines are skipped. All comment lines are skipped; the first line to be executed is the line with the echo command. The next line executed is the line containing the read command. The next read command is executed, and the script proceeds with other commands
Which is a key property of a good shell script?
As one of the key properties of a good shell script is to be reusable, it implies to be human-readable for anyone using the script, including yourself months later. Properly using bash comments ensure that your script can be maintained easily.
How to comment lines in a bash script?
How to Comment Lines 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.
Do you use comment statements in a script?
In addition to using comment statements in scripts, you can make your script self- commenting by using descriptive names for variables. The following SlideShow shows how a simple script is executed, skipping over comments that describe the function of each section of the script. The first line of the script names the command interpreter