CODEWITHSUNDEEP
bashawkdelaynetcat
Laeeq
Laeeq

Reputation: 365

How to assign awk output to netcat with delay after every element?

I want to transfer first field of a csv file, but with a certain delay e.g. 1 second after every element. I am using awk to pull the first field and then send it using netcat. I am using the following command but it has no delay.

awk -F, '{print  $1}' sample.csv | netcat -lk 9999

Any hints would be much appreciated.

Upvotes: 0

Views: 650

Answers (2)

Idriss Neumann
Idriss Neumann

Reputation: 3838

You could use bash instead of awk in this case :

while IFS="," read -ra array; do echo "${array[0]}"; sleep 1; done < sample.csv|netcat -lk 9999

Upvotes: 1

user3442743
user3442743

Reputation:

You can use system within awk to execute shell commands such as sleep.

awk -F, '{system("sleep 1");print  $1}' sample.csv | netcat -lk 9999

A word of warning though, using system can sometimes make it difficult to cancel a command half way through with ^C as it cancels the system call but not awk.

Upvotes: 4

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