How are escape characters used in Linux?

In Linux, escape characters are primarily used to handle the input and output of special characters. Escape characters use a backslash (\) as a prefix, followed by a specific character to represent a special meaning.

常用的转义字符有：

1. \n is a newline character that moves the cursor to the beginning of the next line.
2. \t represents a tab in the output, creating horizontal spacing.
3. \r: Represents the carriage return, moving the cursor to the beginning of the current line.
4. Backslash (\) is used to input the backslash character itself.
5. ” : is used to represent double quotes in order to input the double quote character itself.
6. Use single quotation marks to input the single quote character itself.
7. \xhh: represents the hexadecimal character encoding, where hh is a two-digit hexadecimal number used for inputting specific characters.

For example, if you want to insert a tab and a double quote in the output, you can use the following combination of escape characters:

echo -e "This is a\t\"quoted\" text."

The output result is:

This is a   "quoted" text.

Please note that in some cases, additional escape characters may be required to handle special characters, depending on the requirements of the command or program being used.