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Full Discussion: How to convert any shell command output to JSON format?
Top Forums UNIX for Beginners Questions & Answers How to convert any shell command output to JSON format? Post 303037795 by balu1234 on Tuesday 13th of August 2019 05:11:45 PM
Old 08-13-2019
How to convert any shell command output to JSON format?
Hi All,

I am new to shell scripting, Need your help in creating a shell script which converts any unix command output to JSON format output.
example:
sample df -h command ouput :

Code:
Filesystem   size   used   avail   capacity   Mounted
/dev/dsk/c1t0d0s0   8.1G   4.0G   4.0G   50%   /
/devices   0K   0K   0K   0%   /devices
ctfs   0K   0K   0K   0%   /system/contract
proc   0K   0K   0K   0%   /proc
mnttab   0K   0K   0K   0%   /etc/mnttab
swap   3.1G   836K   3.1G   1%   /etc/svc/volatile
objfs   0K   0K   0K   0%   /system/object
sharefs   0K   0K   0K   0%   /etc/dfs/sharetab
/usr/lib/libc/libc_hwcap1.so.1   8.1G   4.0G   4.0G   50%   /lib/libc.so.1
fd   0K   0K   0K   0%   /dev/fd
swap   3.1G   84K   3.1G   1%   /tmp
swap   3.1G   32K   3.1G   1%   /var/run
/dev/dsk/c1t0d0s7   11G   11M   11G   1%   /export/home
/vol/dev/dsk/c0t0d0/sol_10_113_x86   2.1G   2.1G   0K   100%   /cdrom/sol_10_113_x86

Desired output in JSON format:

Code:
{
"Filesystem": "/dev/dsk/c1t0d0s0",
"size": "8.1G",
"used": "4.0G",
"avail": "4.0G"
"capacity": "50%",
"Mounted": "/"
}

 

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LEARN ABOUT LINUX

lufslist

lufslist(1M)															      lufslist(1M)

NAME

       lufslist - list configuration of a boot environment

SYNOPSIS

       /usr/sbin/lufslist [-l error_log] [-o outfile] BE_name [-X]

DESCRIPTION

       The  lufslist  command  is  part  of  a	suite  of commands that make up the Live Upgrade feature of the Solaris operating environment. See
       live_upgrade(5) for a description of the Live Upgrade feature.

       The lufslist command lists the configuration of a boot environment (BE). The output contains the disk  slice  (file  system),  file  system
       type, and file system size for each BE mount point.

       The following is an example of lufslist output.

       # lufslist BE_name
       Filesystem		 fstype       size(Mb) Mounted on
       ------------------------------------------------------------------
       /dev/dsk/c0t0d0s1	 swap		512.11 -
       /dev/dsk/c0t4d0s3	 ufs	       3738.29 /
       /dev/dsk/c0t4d0s4	 ufs		510.24 /opt

       File  system  type  can	be  ufs,  swap,  or vxfs, for a Veritas file system. Under the Filesystem heading can be a disk slice or a logical
       device, such as a disk metadevice used by volume management software.

       The lufslist command requires root privileges.

OPTIONS

       The lufslist command has the following options:

       -l error_log

	   Error and status messages are sent to error_log, in addition to where they are sent in your current environment.

       -o outfile

	   All command output is sent to outfile, in addition to where it is sent in your current environment.

       -X

	   Enable XML output. Characteristics of XML are defined in DTD, in /usr/share/lib/xml/dtd/lu_cli.dtd.<num>, where <num>  is  the  version
	   number of the DTD file.

OPERANDS

       BE_name

	   Name of the BE for which file systems are to be reported. You cannot specify a BE that is involved in another Live Upgrade operation.

EXIT STATUS

       The following exit values are returned:

       0	Successful completion.

       >0	An error occurred.

FILES

       /etc/lutab

	   list of BEs on the system

       /usr/share/lib/xml/dtd/lu_cli.dtd.<num>

	   Live Upgrade DTD (see -X option)

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWluu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       lu(1M),	luactivate(1M),  lucancel(1M),	lucompare(1M),	lucreate(1M), lucurr(1M), ludelete(1M), ludesc(1M), lumake(1M), lumount(1M), lure-
       name(1M), lustatus(1M), luupgrade(1M), lutab(4), attributes(5), live_upgrade(5)

SunOS 5.10							    24 Jan 2002 						      lufslist(1M)
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