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Top Forums UNIX for Beginners Questions & Answers Printing df -h output in json format Post 303042684 by sravani25 on Friday 3rd of January 2020 10:27:07 AM
Old 01-03-2020
Printing df -h output in json format

Hi All,


i am trying to print the df -h ouput in json format. using below script.


Code:
#!/usr/bin/env bash

df -h > /tmp/sdf
nawk '{print " "$1" "$2" "$3" "$4" "$5" "$6" "}' /tmp/sdf > /tmp/sdf1


nawk 'NR==1 {    for (i=1; i<=NF; i++) {        f[$i] = i    }}{ print $(f["file_system"]), $(f["total"]), $(f["used"]), $(f["available"]),  $(f["used_percent"]), $(f["mounted"]) }' /tmp/sdf1 > /tmp/sdf2

nawk '{if(NR>1)print}' /tmp/sdf2 >/tmp/sdf3

nawk ' { printf "\"file_system\":\"" $1  "\",\"total\":\"" $2  "\",\"used\":\"" $3  "\",\"available\":\"" $4  "\",\"used_percent\":\"" $5  "\",\"mounted\":\"" $6  "\" ||"} ' /tmp/sdf3

but i am getting below error while executing the script



Code:
ERROR : 



nawk: run time error: not enough arguments passed to printf(""file_system":"udev","total":"16G","used":"12K","available":"16G","used_percent":"1%","mounted":"/dev" ||")
        FILENAME="/tmp/sdf3" FNR=1 NR=1
"file_system":"udev","total":"16G","used":"12K","available":"16G","used_percent":"1root@controller:/var/tmp#







Can someone please let me know what is wrong in the script.
Moderator's Comments:
Mod Comment
Please use code tags when posting data and code samples!

Last edited by vgersh99; 01-03-2020 at 11:41 AM.. Reason: code tags, please!
 

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