What happens when you declare a variable in Ksh?

What happens when you declare a variable in Ksh?

However, when you declare a variable inside a function, the variable becomes local to the function that declares it. Ksh has dynamic scoping, so the variable is also accessible in functions that are invoked by the function that declares the variable.

Which is the default scope of a variable in Ksh?

2 Answers 2. The default scope of a variable is the whole script. However, when you declare a variable inside a function, the variable becomes local to the function that declares it. Ksh has dynamic scoping, so the variable is also accessible in functions that are invoked by the function that declares the variable.

How are variables declared in at & T ksh93?

In AT ksh93, all variables declared in functions defined with the traditional syntax are global. The main way of declaring a variable is with the typeset builtin. It always makes a variable local (in AT ksh, only in functions declared with function). If you assign to a variable without having declared it with typeset, it’s global.

Is the STR variable global in Ksh 93u?

Under ksh 93u, pdksh or mksh, the variable is global and your script does print out the value. You appear to have ksh88 or an older version of ksh where the scope is local. I think that initializing str outside the function would create a global variable, but I’m not sure.

How are Ksh functions similar to external scripts?

Be warned: Functions act almost just like external scripts… except that by default, all variables are SHARED between the same ksh process! If you change a variable name inside a function…. that variable’s value will still be changed after you have left the function!! Run this script to see what I mean.

What does Ksh : command _ name : not found mean?

ksh: command_name : not found The shell restricts its search to the directories specified in the PATH variable. Sometimes when the shell is unable to find a particular command, the command may reside in a directory that has not been specified in the PATH variable.

Is the scope of Ksh 93u local or global?

Under ksh 93u, pdksh or mksh, the variable is global and your script does print out the value. You appear to have ksh88 or an older version of ksh where the scope is local.