CODEWITHSUNDEEP
awkshnawk
prabhakar
prabhakar

Reputation: 55

shell scripts - "nawk"

Hi i ve been trying to read records from a final_customer_total.txt which contains details like size of processed files. I used "nawk" command to read the final_customer_total.txt to calculate total size processed and then store the total sum into another file .

variable t= size of unprocessed files
for example let

t=1000

input file :

file1 100
file2 250
file3 300

expected output:

Total size needs to be processed : 1650

actual output:

file1 100
file2 250
file3 300
Total size needs to be processed : 1650

my concern content of inupt file also coming in output which i dont want!!
below is the command i tried

cat final_customer_total.txt |nawk '{total = total + $1} END{printf ("\nTotal size :"(total + t)/1024/1024/1024" GB")}'t=$t >>customer_total_size.txt

when i tried with "awk" its getting errored
Error :awk bailing out near line 1

Upvotes: 0

Views: 1665

Answers (1)

jlliagre
jlliagre

Reputation: 30843

I suspect what you want to be:

nawk -v t=$t '
{
    total = total + $1
}
END {
    printf ("Total size needs to be processed: %d GiB\n",(total+t)/1024/1024/1024)
}' final_customer_total.txt > _cts.txt
mv final_customer_total.txt final_customer_total.txt.old
mv _cts.txt final_customer_total.txt

Upvotes: 1

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