# Filter to change the field name to be more user friendly
**URL:** https://discuss.elastic.co/t/filter-to-change-the-field-name-to-be-more-user-friendly/283543
**Category:** Logstash
**Created:** [September 7, 2021, 1:53pm UTC](https://discuss.elastic.co/t/filter-to-change-the-field-name-to-be-more-user-friendly/283543 "2021-09-07T13:53:12Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Shreesh\_Narayanan](https://discuss.elastic.co/u/Shreesh_Narayanan)
#### Post date: [September 7, 2021, 1:53pm UTC](https://discuss.elastic.co/t/filter-to-change-the-field-name-to-be-more-user-friendly/283543/1 "2021-09-07T13:53:12Z")
Hello,
I have a log line for diskusage such as
```auto
disk-usage: [1]=76% [2]=26% [3]=26% [4]=24% [5]=24% [6]=28%
```
i used dissect and kv to get the values as needed .
```auto
{
"@timestamp" => 2021-09-06T08:22:46.944Z,
"4" => "24%",
"1" => "76%",
"6" => "28%",
"5" => "24%",
"3" => "26%",
"2" => "26%"
}
```
However i needed to rename the field name to something more user friendly . such as renaming [1]=\>"76%" to disk#1 =\> "76%" . I have logs from various machines that have varying number of disks on them . would mutate's rename filter help ? i tried and it doesnt seem to be working .
```auto
dissect
{
mapping => {"message" => "%{time}|%{threadID}|%{?rest}:%{DISK}"}
}
kv
{
source => "DISK"
trim_value => "="
}
mutate
{
rename => {"[0-9]" => "Disk [0-9]"}
}
}
```
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [September 7, 2021, 2:32pm UTC](https://discuss.elastic.co/t/filter-to-change-the-field-name-to-be-more-user-friendly/283543/2 "2021-09-07T14:32:46Z")
> [@Shreesh\_Narayanan](#):
>
> However i needed to rename the field name to something more user friendly . such as renaming [1]=\>"76%" to disk#1 =\> "76%"
I [explained](https://discuss.elastic.co/t/logstash-filter-for-varying-number-of-disks-info-in-the-logs/281400/2) how to do that the last time I answered this question for you.
---
### Author:  [@Shreesh\_Narayanan](https://discuss.elastic.co/u/Shreesh_Narayanan)
#### Post date: [September 8, 2021, 4:38am UTC](https://discuss.elastic.co/t/filter-to-change-the-field-name-to-be-more-user-friendly/283543/3 "2021-09-08T04:38:16Z")
Thank you @Badger🙂 . I lost track of that thread .
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 6, 2021, 4:39am UTC](https://discuss.elastic.co/t/filter-to-change-the-field-name-to-be-more-user-friendly/283543/4 "2021-10-06T04:39:00Z")
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