Comment out multiple lines with csh

When you want to comment out multiple lines at once

<<Comment out statement

Comment out statement

Surround with.

There was no problem with sh and bash, but I got an error in csh. Here's what worked.

`Hello_1.csh`


#!/bin/csh

echo "Takato    : Hello, Nadeshiko!"
echo "Nadeshiko : Hello Takato."

:<< 'COMMENT_OUT'

echo "Takato    : Hello Riichiro, too."
echo "Riichiro  : ... Hello"

'COMMENT_OUT'

Execution result

Takato : Hello, Nadeshiko! Nadeshiko : Hello Takato.

An example of commenting out that I often see in articles but did not work

`Hello_2.csh`


#!/bin/csh

echo "Takato    : Hello, Nadeshiko!"
echo "Nadeshiko : Hello Takato."

<< COMMENT_OUT

echo "Takato    : Hello Riichiro, too."
echo "Riichiro  : ... Hello"

COMMENT_OUT

Execution result

Takato : Hello, Nadeshiko! Nadeshiko : Hello Takato. Invalid null command.

** Conclusion **

:<< 'Comment out statement'

'Comment out statement'

The following seems to be the point.

** 1. Put ": (colon)" at the beginning of the sentence ** ** 2. Enclose the commented out string in single quotes **
It worked fine with sh and bash.

The conversation is from my favorite game, CLOCK ZERO. Riichiro who takes an unfriendly attitude toward Takato, a transfer student who calls out to his childhood friend Nadeshiko, is cute.