Hello, I have made a Linux Shell Script that downloads 6 files from the Internet and then deletes them. Now i want to use the function "/usr/bin/time" and "bc" to calculate how long the avergate run time for the shell script is. I therefore need to do it 100 times. My shell script code is below:
Code:
#!/bin/bash/
for I in {1..6}
do
echo "Downloading file number $I "
wget --user=os --password=yda http://osyda50.hive.no/0$I.html
echo "Deleting file number $I "
rm 0$I.html
done
There's no /usr/bin/time on my or most systems. 'time' is generally a shell builtin.
It also doesn't output data in a format very amenable to processing.
Since you have BASH you have the seconds variable.
Code:
START="$SECONDS"
for ((N=0; N<100; N++))
do
for I in {1..6}
do
echo "Downloading file number $I "
wget --user=os --password=yda http://osyda50.hive.no/0$I.html
echo "Deleting file number $I "
rm 0$I.html
done
done
AVGDURATION="$(( (SECONDS-START)/100 ));
echo "Avg duration is $AVGDURATION"
Also: wget can download more than one file at once, and rm can delete more than one file at once. If you use wget on several files at once it's much faster, since you don't need to disconnect and reconnect for each individual file. You can get rid of your original for-loop completely:
My task
Create a shell script for bash(1), which calculates the average turnaround for
the script. The incision should be based on one hundred runs. For measurement of sciptets turnaround use time(1). For calculating
the average turnaround use bc(1)
Quote:
The bash has a built-in command called 'time'. For the bash script you create to use gnu version, you must enter the path to this program, rather than just 'time', or the embedded version is used. Which command (1) can be used to find the path to commands.
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