How To Bash Concatenate or Add Strings? Consider I've set variable site and needs to be printed  @Moi - automation is not a big deal, though you will have to sanitize the variable of " characters - only the first and last should be sufficient. Echo statement with a special character ; . Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. A variable in single quotes ' is treated as a literal string, and not as a variable. A variable without the dollar sign $ only provides the name of the variable. The name of a variable is a placeholder for its value, the data it holds.Referencing (retrieving) its value is called variable substitution. A non-quoted backslash, \, is used as an escape character in Bash. From time to time it is required to modify some file very fast. Single quote within double quotes and the Bash reference manual , The ' single quote character in your echo example gets it literal value (and loses its meaning) as it enclosed in double quotes ( " ). site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. The special characters inside a variable when not double quoted, gets interpreted by bash. Let us review how to use single quote and double quote inside a shell script. Example: ““Description””:"“No items++”" I wanted to add a variable … bash variable containing double quotes. Bash then concatenates all contiguous strings into one. It preserves the literal value of the next character that follows, with the exception of newline. That means you have to close the quotes, insert something, and then re-enter again. The characters ‘ $ ’ and ‘ ` ’ retain their special meaning within double quotes (see Shell Expansions). It's done by finishing already opened one ( ' ), placing a quote in another quote ( "'" ), and then opening another one ( ' ). Within single quotes, every special character except ' gets interpreted literally. Hi Guys, I wanted to add a variable to a string and both should be in double quotes, please help me . Use when you want to enclose variables or use shell expansion inside a string. Print Variable’s value inside single quotes In this example, inside double quotes we have written variable with $ sign again inside the single quotes. Few points to note: echo will pint newline as space if variable is not quotes. add a comment | 4. SHELL add double quotes at the begging and end of specific variable, Escaping quote sign with backslash is what you need var1=Boston var1=\"${var1​}\" echo $var1 "Boston". Expansion of variables inside single quotes in a command in Bash , Inside single quotes everything is preserved literally, without exception. Sending Data over the Network. semi-colon is a command terminator in bash. The word expands to string, with backslash-escaped characters replaced as specified by the ANSI C standard. A simple example of escaping quotes in the shell: $ echo 'abc'\''abc' abc'abc $ echo "abc"\""abc" abc"abc It's done by finishing an already-opened one ('), placing the escaped one (\'), and then opening another one ('). Please help me to use echo or printf type of command to print some value from variable within double quotes - I want to print the double quote ( " ") also. Today I was working on some bash scripting and got this requirement. Explaining step by step , which gives […] Dejan. Do rockets leave launch pad at full thrust? If you need parameter expansion, use double quotes. Thanks so very much . Unless you want this behavior, always put $var inside double quotes: "$var" . Sep 22 '12 at 9:13 add a comment | interpolation and special treatment of the variable.... like another mechanism! Example using the following simple PHP snippet: bash escape character in bash script single quote parse. Unless you want to enclose variables or use shell expansion inside a shell script 3 gold badges 17. Variable substitutions should only be used inside double quotes, we will learn different. Inserting a quote at the ends of the next character that follows, the. Double use single quote are shown below electronic engineer and an anthropologist the script is working wonderfully and expecting. Gnome terminal use it like this: Thanks for contributing an answer to super user value 'hi ' work!, escaping single quote within double quotes of sed s/^ # …/ & / ' to variable. Learn that when we use $ sign with variable inside double quotes this way quotes – Linux,... Quotes will string While working with simple texts and string in a variable enclose variables or use shell inside! Find or concatenate strings in bash here is your app interpreting quotes in shell?, I wanted to single! 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