Defining and using a variable in batch file

Question

I m trying to define and use a variable in a batch file  It looks like it should be simple   echo off  set location    quot bob quot  echo We re working with  quot  location  quot   The output I get is the following  We re working with  quot  quot   What s going on here  Why is my variable not being echo d

User · Accepted Answer

The space before the   is interpreted as part of the name  and the space after it  as well as the quotation marks  are interpreted as part of the value   So the variable you   ve created can be referenced with  location      If that   s not what you want  remove the extra space s  in the definition

User · Answer

input location bat   echo off cls  set  p  location   bob  echo We re working with  location  pause   output  We re working with bob    mistakes u done   space and

User · Answer

The spaces are significant  You created a variable named  location   with a value of    bob    Note - enclosing single quotes were added to show location of space   If you want quotes in your value  then your code should look like  set location  bob    If you don t want quotes  then your code should look like  set location bob   Or better yet  set  location bob    The last syntax prevents inadvertent trailing spaces from getting in the value  and also protects against special characters like  amp    etc

User · Answer

Consider also using SETX - it will set variable on user or machine  available for all users  level though the variable will be usable with the next opening of the cmd exe  so often it can be used together with SET     setting variable for the current user if not defined My Var     set  quot My Var My Value quot    setx My Var My Value      setting machine defined variable if not defined Global Var     set  quot Global Var Global Value quot    SetX Global Var Global Value  m    You can also edit directly the registry values   User Variables  HKEY CURRENT USER Environment   System Variables  HKEY LOCAL MACHINE SYSTEM CurrentControlSet Control Session Manager Environment  Which will allow to avoid some restrictions of SET and SETX like the variables containing   in their names

[batch-file] Defining and using a variable in batch file

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