20 characters
127 Characters
Linux does not have a limit as to the number of characters you can enter in a command.
The max number of characters from SMS messaging is usually limited to 160 characters.
15
15 letters
You can send a maximum of 60,000 tweets per day.
30
There is no minimum number of characters that a Twitter username has to have. You can have a username with only one character, if you would like. There is a maximum number of characters that a username can have, though. A username cannot be longer than 15 characters.
depends on what password type you are creating. usually 4-6, but a computer password is usually 7. good luck :) be creative
32,767 characters in a standard text field.
Maximum number of characters in Diablo III is ten (10) per account.
Field size
There really isn't a such thing as a 'correct' password. A good password contains at least 7 characters, with at least one number. The password could be a jumbled mess, or an actual word. It is all up to you.