How can I search case insensitive in pgrep?

[BSD only]
[FreeBSD pgrep man page]

From the man page of pgrep: man pgrep under option i

 -i          Ignore case distinctions in both the process table and the
             supplied pattern.

So, we can just use the option i like following:

pgrep -fi 'PATTERN'

i.e.:

pgrep -f 'chrome'
echo $?
1

But including -fi option works:

pgrep -fi 'ChRoMe'

Output:

If the string is not too long:

pkill -f '[Pp][Aa][Tt][Ee][Rr][Nn]'

kill `ps ax | grep -i PATTERN | awk '{ print $1 }'`

Will kill all of your process matching case insensitive process using the magical `

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