Find Number of fields in a file

To find the number of fields in a TSV file just do the following:

First calculate the number of tabs:

$ head -1 /tmp/file.txt |  egrep -o -E $'\t' | wc -l
16

The number of fields is number of tabs separating the fields + 1

16 + 1 = 17

 
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Basic Monitoring for Hadoop Data Nodes

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