| 1 | #!/bin/sh
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| 2 |
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| 3 | # We briefly mentioned the cat command earlier. It prints out all the
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| 4 | # data of a file into the terminal. And like the animal, 2 more commands
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| 5 | # are used. Head to print out the first lines of a file and tail to
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| 6 | # print out the last lines of a file.
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| 7 | #
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| 8 | # $ cat file # prints out the entiretly of a file
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| 9 | # $ head file # prints out the first 10 lines of a file
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| 10 | # $ tail file # prints out the last 10 lines of a file
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| 11 | # $ head -n 1 # prints out only the first line of a file
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| 12 | # $ tail -n 18 # prints out only the last 18 lines of a file
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| 13 | # $ head -n -4 # prints out all lines except the last 4 lines
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| 14 | # $ tail -n +9 # prints out from line 9, onwards
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| 15 | #
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| 16 | # Fix the command below to do a word count on the last 50 lines of the
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| 17 | # LICENSE file in this repository. Don't change the new file name.
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| 18 |
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| 19 | head 50 LICENSE > 08_cat # the '>' sign is discussed later. For now
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| 20 | # know that the command should be outputting
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| 21 | # the last 50 lines into a file called 08_cat
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| 22 | wc -l 08_cat
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