curl stops working when used in combination with xargs

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I need to check a list of domains in parallel. So I was planning on using curl and xargs.



This is check.sh:



#!/bin/bash
domain=$1?Pass the domain as a parameter
curl -o /dev/null --silent --write-out "http://$domain/,%http_code,%redirect_urln" "http://$domain/"


Now, when used a single time it works:



$ ./check.sh example.com
http://example.com,200,


If instead I use it in combination with xargs, curl does not work properly and the output looks broken:



$ cat domains.txt | xargs -L1 -P2 ./check.sh
,000,//example.com
,000,//example.org


This happens also without -P2, so it must be related to the way lines are passed to the script. I also added an echo "$domain" in it, but everything looks ok.









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    up vote
    0
    down vote

    favorite












    I need to check a list of domains in parallel. So I was planning on using curl and xargs.



    This is check.sh:



    #!/bin/bash
    domain=$1?Pass the domain as a parameter
    curl -o /dev/null --silent --write-out "http://$domain/,%http_code,%redirect_urln" "http://$domain/"


    Now, when used a single time it works:



    $ ./check.sh example.com
    http://example.com,200,


    If instead I use it in combination with xargs, curl does not work properly and the output looks broken:



    $ cat domains.txt | xargs -L1 -P2 ./check.sh
    ,000,//example.com
    ,000,//example.org


    This happens also without -P2, so it must be related to the way lines are passed to the script. I also added an echo "$domain" in it, but everything looks ok.









    share























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I need to check a list of domains in parallel. So I was planning on using curl and xargs.



      This is check.sh:



      #!/bin/bash
      domain=$1?Pass the domain as a parameter
      curl -o /dev/null --silent --write-out "http://$domain/,%http_code,%redirect_urln" "http://$domain/"


      Now, when used a single time it works:



      $ ./check.sh example.com
      http://example.com,200,


      If instead I use it in combination with xargs, curl does not work properly and the output looks broken:



      $ cat domains.txt | xargs -L1 -P2 ./check.sh
      ,000,//example.com
      ,000,//example.org


      This happens also without -P2, so it must be related to the way lines are passed to the script. I also added an echo "$domain" in it, but everything looks ok.









      share













      I need to check a list of domains in parallel. So I was planning on using curl and xargs.



      This is check.sh:



      #!/bin/bash
      domain=$1?Pass the domain as a parameter
      curl -o /dev/null --silent --write-out "http://$domain/,%http_code,%redirect_urln" "http://$domain/"


      Now, when used a single time it works:



      $ ./check.sh example.com
      http://example.com,200,


      If instead I use it in combination with xargs, curl does not work properly and the output looks broken:



      $ cat domains.txt | xargs -L1 -P2 ./check.sh
      ,000,//example.com
      ,000,//example.org


      This happens also without -P2, so it must be related to the way lines are passed to the script. I also added an echo "$domain" in it, but everything looks ok.







      curl xargs





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      asked 6 mins ago









      rubik

      367416




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