Are you ready to take your data science career to the next step, or break into data science? With Springboard’s Data Science Career Track, you’ll master data science topics, have personalized career guidance, weekly calls with a data science expert, and a job guarantee.
Execute multiple curl cmds with sleep and send output to file
First off, I am, in no way a Unix/Linux expert, so please bear with me. Also, I sure hope I've selected the proper topics for this question...
I need to run a few thousand curl cmds but I'm having difficulties figuring out how to go about doing this.
1. The curl is an XPOST (e.g. JSON)
For example:
curl -XPOST -H 'name1: value1' -H 'name2: value2' -H "Content-type: application/json" -d '{ "name3": [{"blah1": "blah1","aaa1": "blah2"}]}' 'http://domain.com'
curl -XPOST -H 'name1: value1' -H 'name2: value2' -H "Content-type: application/json" -d '{ "name3": [{"blah2": "blah2","aaa2": "blah2"}]}' 'http://domain.com'
curl -XPOST -H 'name1: value1' -H 'name2: value2' -H "Content-type: application/json" -d '{ "name3": [{"blah3": "blah3","aaa3": "blah2"}]}' 'http://domain.com'
The thing is I need to run this in a script so that there is a delay between each one. Also, once 1 curl is run, I get back a result which I'd like to save.
I thought I could just load all of the curl cmds in a text file and run something like:
while read line; do $line; sleep 5; done < input_curl.txt >> output_curl.txt
The resulting curl response would be something like:
{"name2":"value2","resultn
My thought was that I'd be able to run each curl, line by line, then have it sleep for 5 seconds, and then run the next one. And, the curl result would be writen to output_curl.txt. Of course, that doesn't work.
Any help would be greatly appreciated.
Thanks,
Larry
I need to run a few thousand curl cmds but I'm having difficulties figuring out how to go about doing this.
1. The curl is an XPOST (e.g. JSON)
For example:
curl -XPOST -H 'name1: value1' -H 'name2: value2' -H "Content-type: application/json" -d '{ "name3": [{"blah1": "blah1","aaa1": "blah2"}]}' 'http://domain.com'
curl -XPOST -H 'name1: value1' -H 'name2: value2' -H "Content-type: application/json" -d '{ "name3": [{"blah2": "blah2","aaa2": "blah2"}]}' 'http://domain.com'
curl -XPOST -H 'name1: value1' -H 'name2: value2' -H "Content-type: application/json" -d '{ "name3": [{"blah3": "blah3","aaa3": "blah2"}]}' 'http://domain.com'
The thing is I need to run this in a script so that there is a delay between each one. Also, once 1 curl is run, I get back a result which I'd like to save.
I thought I could just load all of the curl cmds in a text file and run something like:
while read line; do $line; sleep 5; done < input_curl.txt >> output_curl.txt
The resulting curl response would be something like:
{"name2":"value2","resultn
My thought was that I'd be able to run each curl, line by line, then have it sleep for 5 seconds, and then run the next one. And, the curl result would be writen to output_curl.txt. Of course, that doesn't work.
Any help would be greatly appreciated.
Thanks,
Larry
Who is Participating?
Hi omarfarid,
As I wrote, there are thousands of them, so I thought it would be best to get all of the curls into a file, 1 line for each, and execute that file from the cmd line. I'm not saying that's the correct way going about doing this though.
Thanks,
Larry
As I wrote, there are thousands of them, so I thought it would be best to get all of the curls into a file, 1 line for each, and execute that file from the cmd line. I'm not saying that's the correct way going about doing this though.
Thanks,
Larry
the while loop should work
while read line
do
sh $line
sleep 5
done < input_curl.txt >> output_curl.txt
but why you want to send all output to one file?
while read line
do
sh $line
sleep 5
done < input_curl.txt >> output_curl.txt
but why you want to send all output to one file?
Not sure about the "sh". The input file is a text file. The reason why I need the curl response writen to a file is because I need to make sure there are no errors being returned. And, since I'm not running these curl cmds one at a time, I'd never see the results unless it's written to a file. That's why I used >> so that each curl response would get appended.
When I run that with the sh I get:
-bash-4.1$ while read line; do sh $line; sleep 5; done < input_curl.txt >> output_curl.txt
/usr/bin/curl: /usr/bin/curl: cannot execute binary file
-bash-4.1$ while read line; do sh $line; sleep 5; done < input_curl.txt >> output_curl.txt
/usr/bin/curl: /usr/bin/curl: cannot execute binary file
Question has a verified solution.
Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.
Have a better answer? Share it in a comment.
All Courses
From novice to tech pro — start learning today.
-
Course of the Month10 days, 17 hours left to enrollMonitoring and Operating a Private Cloud with System Center 2012 R2 273 lessons
the while loop should do what you want, but if you want to capture errors the you need to redirect stderr as well:
while read line
do
$line
sleep 5
done < input_curl.txt >> output_curl.txt 2>&1