How to retrieve the variable name “apple” in "FRUIT=apple" in UNIX shell?

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When the user inputs FRUIT=apple in the Unix shell, how can I get the name FRUIT and apple from the input FRUIT=apple separately?

echo -e "\nEnter inputs here: \c"
read inputs

## user input "FRUIT=apple"

Is there any way to get a partial text from the input? Can we use the expr command to solve the problem? If so, how?

You can do it this way, for example:

$ IFS== read -r key value
FRUIT=apple
$ echo "$key"
FRUIT
$ echo "$value"
apple

How to get a variable name as a string in Python?, This isn't really something you do in Python as variables are actually name mappings to objects. The only objects in Python that have canonical  This example from the doc shows table is able to retrieve the variable names of the iput arguments list and uses them as column name:

Try using cut command and pass the delimiter as "=" . The right side of the same will be apple and left side will be FRUIT.

cat file_name | cut -d "=" -f1

How to get a variable name as a string in PHP?, To get a variable name as a string in PHP, the code is as follows−Example Live Demo. To access the variable names, you can again treat a data frame like a matrix and use the function colnames () like this: > colnames (employ.data) [1] "employee" "salary" "startdate". But, in fact, this is taking the long way around. In case of a data frame, the colnames () function lets the hard work be done internally by another function, the names () function.

Reflection, Yeah you may ask, what's the point about Get variable name in JavaScript? Well, in our daily programming work, we often need to write  How to Specify Name of a Variable in Programming? #Variable #Naming a Variable #OOP #InsightCS&IT #ICS.

How to get a variable name as a string in PHP?, It is an associative array which contains the reference of all variables which are currently defined in the global scope. Example: This example uses $GLOBAL  To access the variable Granny, you can use the dollar sign like this: > baskets.df$Granny 12 4 5 6 9 3 So you specify the data frame, followed by a dollar sign and then the name of the variable. You don’t have to surround the variable name by quotation marks (as you would when you use the indices).

get-variable-name · PyPI, GET VARIABLE NAME Returns the variable name of an object in current program​/script as a string. Usage: get_variable_name(var). return. Hi All, I have a variable X that gets assigned with a variable name How to retrieve value of the variable whose name gets assigned to 'X' Ex: I have following variables, A='I am a' B='I am b' C='I am c' Now when I assign variable 'X' as 'B', I need to get 'I am b' And on the fly when inputs comes as 'C' for 'X', I need to get 'I am c'

How can I get the name of a MATLAB variable as a string , There is no direct way to get the name of a variable as a string, but there is a function called "inputname" that will return the name of a variable that was input into  Thanks for contributing an answer to Data Science Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations.

Comments
  • You shouldn't add the solution you used to the question. The question should only contain the, well, question.
  • You also changed the question to remove any mention of expr, which makes for example my answer look strange - why would I mention expr in there. I suggest you roll back your edit.
  • Thanks for the suggestion. I have updated it.
  • Thank you for the answer, the sum-up and explanation are clear. I was using key=${str%=*} value=${str#*=} as the solution.