![]() ![]() (( ) creates a new quoting context, so you don't need to escape double quotes inside it at all in the first place it's only backticks that have a problem there). ![]() I could not find an application for the form $".", though. Triple quotes have no special meaning in bash: two of the quotes cancel each other out, leaving only the third making the behavior 100 identical to just using only one quote. The form $'.' can be useful to assign contents with meta-characters like \t or \n to variables. The third and fourth examples give identical results: Only the variable is expanded. The special parameters ‘’ and ‘’ have special meaning when in double quotes. 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. In the second example, the backslash examples are expanded, but not the variable. A double quote may be quoted within double quotes by preceding it with a backslash. In the first example, neither the $SHELL variable nor the backslash escapes are expanded. echo 'a aa ac b cc\tdd e\se' a aa ac b cc dd e\se In the above example, represents new line.For this Syntax 'code code1', terminal first prints the code on first line and on the next line, it prints code1. Please compare: $ echo 'I am using\t$SHELL.\n' This also means that a variable will be expanded in $".", but not in $'.'. String is translated and replaced, the replacement is double-quoted. The current locale is C or POSIX, the dollar sign is ignored. The expanded result is single-quoted, as if the dollar sign had notĪ double-quoted string preceded by a dollar sign ($"string") willĬause the string to be translated according to the current locale. Hexadecimal value HHHHHHHH (one to eight hex digits) The Unicode (ISO/IEC 10646) character whose value is the The hexadecimal value HHHH (one to four hex digits) \uHHHH the Unicode (ISO/IEC 10646) character whose value is \xHH the eight-bit character whose value is the hexadecimal \nnn the eight-bit character whose value is the octal value Here, replace dir name with the directory name you want. Instead of using double quotes we can use single quotes then also this command will work. This command is used to navigate to a directory with white spaces. Backslash escape sequences, if present, are How to Change Directory by Using cd dir name Command in Linux. The wordĮxpands to string, with backslash-escaped characters replaced as specifiedīy the ANSI C standard. This syntax is not mentioned in the answers to Differences between doublequotes " ", singlequotes ' ' and backticks ´ ´ on commandline?.ĭetails on this syntax can be found in the bash(1) manpage: Words of the form $'string' are treated specially. It looks like this syntax came from the Korn shell to Zsh and Bash, and is now in POSIX (see for example the "expand sequences" line in ). In your case, there is a special quoting syntax used, namely $'.' and $".". ![]()
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