Scripts – How to Write an Awk Script to Catch Ping’s Time

awkscripts

In this line:

Reply from 10.11.12.13 time=1035ms

how to write an awk script which brings out just 1035.

Best Answer

You can use for example:

ping host | awk 'BEGIN {FS="[=]|[ ]"} {print $11}'

or, better to stop ping after sending one or more packets:

ping -c 1 host | awk 'BEGIN {FS="[=]|[ ]"} NR==2 {print $11}'

ping -c 5 host | awk 'BEGIN {FS="[=]|[ ]"} NR>=2&&NR<=6 {print $11}'

If you refer at this string: "Reply from 10.11.12.13 time=1035ms" and not at the output of ping command, you can use:

echo "Reply from 10.11.12.13 time=1035ms" | awk 'BEGIN {FS="[=]|ms"} {print $2}'

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Ubuntu – How to process multi-line records with awk in a bash script

With awk, you can change the record separator. By default it is a newline, so each line of the file is a record. If you set the RS variable to the empty string, awk will consider records to be separated by blank lines:

awk -v name="KFC" -v RS="" '$0 ~ "Restaurant: " name' example.txt

Ubuntu – Why the bash script only outputs one line on echoing awk variable

You're not using the $i variable inside the loop

for i in "${addresses[@]}"; do
# ..^
    echo $addresses, disable, , , >import.csv
# .......^^^ should be: echo $i, ...
done

For an array variable, when you print the variable without specifying an index, bash seems to give you just the first element.

$ x=( one two three )
$ echo $x
one

Best Answer

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