Small thing, but error nonetheless.
Course as noted in Subject, in section entitled "View the Contents of Files" we go through cat, using multiple arguments with cat, using head, using tail, and then, using wc.
In the section on wc the text states "The wc command counts lines, words, and characters in a file. Use the -l, -w, or -c options to display only the given number of lines, words, or characters, respectively."
While it is true that wc options can be used to output lines, words, and characters, the option for characters is m, not c. The byte count is shown when -c is specified (alternately --bytes which is much clearer).
Screencap of the text:
Screencap of the man page on serverb in the Lab Environment:
A small correction for the textbook, next round of editing, if it hasn't already been specified.
A huge thank you to the editors of this wonderful text for use of the serial (aka Oxford, aka Harvard) comma; it is greatly appreciated by this person!
