What do the variable $! contains?

What do the variable $? contains?

Which line of code represents the correct syntax to establish a reference to a database handle?

Consider the following program code: $y = 1; $x = 2; $z = 3; do { print ($y ); } while ($y eq 2); do { print ($x ); } until ($x eq 2); print ($z ); What is the result of executing this program code?

Consider the following program code: $x = 10; LOOP: while ($x < 15) { print ($x ); if ($x >= 14 && $x <= 20) { $x += 2; redo LOOP; } else { $x++; }} What is the result of executing this program code?

Consider the following program code: @array = (10, Masami, 10..13, Niklas); for ($i = 1; $i < $#array; $i++) { print($array[$i] ); } What is the result of executing this program code?

What is the value of @list at the end of the following program? #!/usr/local/bin/perl @list=(1,2.3); &testsub(*list); Sub testsub{ Local (*sublist)[email protected]_; $sublist[1] = 5; }

Within Perl, which operator is used to change the working directory?

Which file test can be done to see if a file exists and has a nonzero size?

Which Perl function can be used to launch a child process to run a program?

Which file test can be done to see if a file is a symbolic link?

Your script has just read in a variable from the keyboard and you want to strip that variable of the newline character that came in. What operator should you use to perform this operation?

Suppose the variable $var has the value abc123abc . What is the value of $var after the following substitution?

Which function can be used to print a message to standard error, but not quit the program?

Consider the following lines of code: @array1 = ("apples", "oranges", "pears", "plums"); foreach (@array1) {print "$_\n"}; What is the result of these lines of code?

Consider the following program code @array= (“Y”,”W”,”X”); @array=sort(@array); unshift(@array , ”Z”); print($array[0]); What is the output of this code

Assume that $var has the value hello . What is the value of the following sting?q (It’s time to say $var);

You want to close the directory handle EVAN. Which of the following should you use to accomplish this?

Within a loop, which operator immediately ends execution of the loop?

Which file test can be done to see if a file has the sticky bit set on it?