DevOps Linux Interview Questions grep command

This video covers the latest interview questions on DevOps & Linux. Grep command to find the number of occurrences.

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[arunprashanth]

Well
With awk => awk '/503/ {count++} END {print count } ' filename

With grep => grep -c 503 filename

[varaprasadpallamreddy]

Grep -c "503" filename | wc -l

[saurabhchandra]

What if a line contains more than one searched string?