Modern Language Association (MLA) style is a popular standard for formatting academic research papers, which many schools require.
Answer the following statement true (T) or false (F)
True
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would add /opt/bin to PATH only if that pathname is not already in PATH. Be sure your solution works even if the shell variable starts out empty. Also make sure you check the list elements carefully. If /usr/opt/bin is in PATH but /opt/bin is not, the example just given should still add /opt/bin to PATH. (Hint: You might find this exercise easier to complete if you first write a function locate_field that tells you whether a string is an element in the value of a variable.)
Lists are commonly stored in environment variables by putting a colon (:) between each of the list elements. (The value of the PATH variable is an example.) You can add an element to such a list by catenating the new element to the front of the list, as in PATH=/opt/bin:$PATH If the element you add is already in the list, you now have two copies of it in the list. Write a shell function named addenv that takes two arguments: (1) the name of a shell variable and (2) a string to prepend to the list that is the value of the shell variable only if that string is not already an element of the list. For example, the call addenv PATH /opt/bin
To resize an image while retaining its original proportions, press and hold ____ while dragging a corner selection handle.
A. Esc B. Alt C. Shift D. Control
Cells can contain formatting, comments, and contents
Indicate whether the statement is true or false
Many mobile websites integrate an icon commonly called the _____ icon for use as a menu button.?
A. ?hamburger B. ?pizza C. ?pasta D. ?noodle?