Which special character should be used during naming a file?

Please note that there are only two special characters that should ever be used in file or folder names: _ (underscore) or – (dash).

What is special character not allowed?

You can name files using almost any character for a name, except for the following reserved characters: < > : ” / \ |? * The maximum length for a path is 255 characters. This limitation includes the drive letter, colon, backslash, directories, subdirectories, filename, and extension.

What characters can be used when naming a file?

In Windows

Character	Name
/	slash
\	backslash
?	question mark
\%	percent

Why are some special characters not allowed in certain ids and passwords?

Limiting the character set to alphanumerics limits the likelihood of a script or exploit getting past the input validation stage. The user can always improve their security by using longer passwords, but the application needs to have a specific whitelist to help prevent attacks.

Which of the following Cannot be used in naming a file?

The following file names are not allowed: LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, LPT9, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9, PRN, AUX, NUL, CON, CLOCK$, dot character (.), and two dot characters (..).

Which special character should be avoided during naming a file in Linux?

Don’t start or end your filename with a space, period, hyphen, or underline. Keep your filenames to a reasonable length and be sure they are under 31 characters. Most operating systems are case sensitive; always use lowercase. Avoid using spaces and underscores; use a hyphen instead.

What can’t you name a file?

aspx Do not use the following reserved device names for the name of a file: CON, PRN, AUX, NUL, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, and LPT9. Also avoid these names followed immediately by an extension; for example, NUL. txt is not recommended.

What special characters should not be used in passwords?

Special characters, including the following are not acceptable: (){}[]|`¬¦! “£$\%^&*”<>:;#~_-+=,@. If you do use a disallowed character and the system does not recognize your mistake you will not be allowed to use the password or username to log into your account later.