How to test shell commands on the real file?

Asked Jun 21 '16 at 15:25

Active Jun 21 '16 at 15:33

Viewed 48 times

I have to test several shell commands on the real file that I create to make sure they work. I have a windows and a mac computers. Please, provide me step by step instructions on how to do it preferably on mac.

Here is a list of problems and commands that I have to test to make sure they work properly:

1) There is a huge tab-delimited file "fileGrand", it has 10 columns, the values in 6th column are integers. How to verify that all of these conditions were satisfied?

nawk 'NF != 10 {printf("[%d] has invalid [%d] number of fields\n", FNR, NF)} $6 !~ /^[0-9]+$/ {printf("[%d] 6th field is invalid [%s]\n", FNR, $6)}' fileGrand

2) The same file. Each value in column 3 is unique. How to verify that?

awk -F$'\t' '$3 in a {exit 3} {a[$3]}' fileGrand

3) Count the number of occurrences of the word "blue" in the file fileGrand.

CountOcc () { echo $(grep -o "blue" fileGrand | wc -l) ; }

4) Log the output and error message of a program into a file.

unix_command >logfilename 2>&1

edited Jun 21 '16 at 15:33

Dummy00001

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asked Jun 21 '16 at 15:25

icittar

2

Maybe post a new question for each homework question... – Robert Jun 21 '16 at 15:27
I'm asking how to test these commands to make sure they work. – icittar Jun 21 '16 at 15:30
And how you'd test each command is different. – Charles Duffy Jun 21 '16 at 15:40
BTW, `echo $(foo)` is silly; just have your function call `foo`. – Charles Duffy Jun 21 '16 at 15:40
Related: http://stackoverflow.com/questions/1339416/unit-testing-bash-scripts; http://stackoverflow.com/questions/971945/unit-testing-for-shell-scripts; http://stackoverflow.com/questions/745266/test-anything-protocol-in-shell-scripts; etc. – Charles Duffy Jun 21 '16 at 15:44
what unix emulator can I use to test this? – icittar Jun 28 '16 at 15:41

How to test shell commands on the real file?

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