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bug#28316: tr -d
From: |
Eric Blake |
Subject: |
bug#28316: tr -d |
Date: |
Fri, 1 Sep 2017 12:09:08 -0500 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 |
tag 28316 notabug
thanks
On 09/01/2017 06:28 AM, John Pateman wrote:
> macOS 10.12.
>
> Problems with tr -d
> Removal of character 'd' from test string when tr invoked with -d
> incantation.
>
> Example
>
> address@hidden ~ $ echo uuid:8ddddb8d5 | tr -d 'uuid:'
That asks tr to delete all individual instances of 'd', 'i', 'u', and
':' in the input string, regardless of their context.
>
> Expected output
> 8ddddb8d5
>
> Actual output
> 8b85
The behavior you observed was correct. To get what you want, you need to
use a tool that can do substring removal, rather than individual
character removal; sed and awk are such tools:
$ echo uuid:8ddddb8d5 | sed s/uuid://
8ddddb8d5
As such, I'm tagging this as not a bug; but feel free to reply with any
further questions on the topic.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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