![]() ![]() Only if you enter that closing single quote and press Enter will the command run, which is almost certain to return an error. In your case, grandpa's_pen.mp4 has one unescaped single quote, so when you press Enter to run your command, the shell gives you a new prompt, in which you could type more text, and waits until you enter a closing single quote. That's because when single quotes and double quotes are used as special characters, that is when they are used without being escaped, they are expected by the shell to be in pairs. ![]() In this case that action does not take too much time. The above example would be in that case: mv "grandpa's_pen.mp4" grandpas_pen.mp4įor example, when I try to rename grandpa's_pen.mp4 to grandpas_pen.mp4, the action takes too much time. So, for example, to rename grandpa's_pen.mp4 to grandpas_pen.mp4 you should run: mv grandpa\'s_pen.mp4 grandpas_pen.mp4Īlternatively, you can use double quotes ( ") around the files that have single quotes. To escape a character you can use the escape character \ right in front of it. Ht1528 - Enabling and using the 'root' user in macOS.You need to escape ', since, as you have also mentioned, single quotes ( ') are special characters in Bash (which is most likely the shell your terminal uses). Single quotes are useful for avoiding escaping escape. It's likely you'll use double quoted strings with escape sequences to use their translated meaning, a newline or a tab. Both string types have their use cases of course. If ^D doesn't work, type 'stty -a' to see what the eof character is. In single quoted strings however, escape sequences are escaped and return their literal definition. The special parameters * and have special meaning when in double quotes.Įnd Of File is usually CTRL+D (^D) when input is from the keyboard. ![]() A double quote may be quoted within double quotes by preceding it with a backslash. In Bash scripting, one effective way to escape a single quote enclosed within a single-quoted string is to use a backslash character (). Backslashes preceding characters without a special meaning are ![]() Within double quotes, backslashes that are followed by one of these characters are removed. The backslash preceding the ! is not removed. If enabled, history expansion will be performed unless an ! appearing in double quotes is escaped using a backslash. Retains its special meaning only when followed by one of the following characters: $, `, ", \, or newline. The characters $ and ` retain their special meaning within double quotes. Double quotes escape most characters, except the double quote ' the backtick, the dollar sign, the backslash \, and the. A single quoted string of ''\' will represent exactly those characters. Single quotes escape every special character except the single quote itself. Single quotes, even when preceded by a backslash.Įnclosing characters in double quotes ( ") preserves the literal value of all characters within the quotes, with the exception of $, `, and \ and, when history expansion is enabled, !. The difference between single quotes and double quotes is important. Single QuotesĮnclosing characters in single quotes ( ') preserves the literal value of every character within the quotes. (that is, it is removed from the input stream and effectively ignored). If a \newline pair appears, and the backslash itself is not quoted, the \newline is treated as a line continuation It preserves the literal value of the next character that follows, with the exception of newline. Escape CharacterĪ non-quoted backslash \ is the Bash escape character. Whenever you pass a variable to a command, you should probably quote it.Įach of the shell metacharacters has special meaning to the shell and must be quoted if it is to represent itself. To prevent reserved words from being recognized as such, and to prevent parameter expansion. Quoting can be used to disable special treatment for special characters, Quoting is used to remove the special meaning of certain characters or words to the shell. How-to: Escape Characters, delimiters and Quotes Quoting ![]()
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