GNU bug report logs - #17816
bug in cut, doesn't work normally with -f

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Jim Michaels <jmichae3 <at> yahoo.com>
To: "bug-coreutils <at> gnu.org" <bug-coreutils <at> gnu.org>
Subject: bug in cut, doesn't work normally with -f
Date: Fri, 20 Jun 2014 01:23:29 -0700

[Message part 1 (text/plain, inline)]

1.run firefox (am using linux mint 17 in virtual machine vbox) version 28.0

2.start xterm
3.ps -e | grep firefox | cut -f 2
this should be the equivalent of ps -C firefox -o pid=
actual:
 2366 ?        00:02:53 firefox
expected:
 2366

 
-------------
Jim Michaels
Jmichae3 <at> yahoo.com
JimM <at> RenewalComputerServices.com
http://RenewalComputerServices.com
http://JesusnJim.com (my personal site, has software)
---
IEC Units: Computer RAM & SSD measurements, microsoft disk size measurements (note: they will say GB or MB or KB or TB when it is IEC Units!):
[KiB] [MiB] [GiB] [TiB]
[2^10B=1,024^1B=1KiB]
[2^20B=1,024^2B=1,048,576B=1MiB]
[2^30B=1,024^3B=1,073,741,824B=1GiB]
[2^40B=1,024^4B=1,099,511,627,776B=1TiB]
[2^50B=1,024^5B=1,125,899,906,842,624B=1PiB]
SI Units: Hard disk industry disk size measurements:

[kB] [MB] [GB] [TB]
[10^3B=1,000B=1kB]
[10^6B=1,000,000B=1MB]
[10^9B=1,000,000,000B=1GB]
[10^12B=1,000,000,000,000B=1TB]
[10^15B=1,000,000,000,000,000B=1PB]

[Message part 2 (text/html, inline)]

Message #8 received at 17816 <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: Jim Michaels <jmichae3 <at> yahoo.com>
Cc: 17816 <at> debbugs.gnu.org
Subject: Re: bug#17816: bug in cut, doesn't work normally with -f
Date: Fri, 20 Jun 2014 13:40:32 +0100

tag 17816 notabug
close 17816
stop

On 06/20/2014 09:23 AM, Jim Michaels wrote:
> 1.run firefox (am using linux mint 17 in virtual machine vbox) version 28.0
> 
> 2.start xterm
> 3.ps -e | grep firefox | cut -f 2
> this should be the equivalent of ps -C firefox -o pid=
> actual:
>  2366 ?        00:02:53 firefox
> expected:
>  2366

cut defaults to tab field delimiters, which you would change with -d ' '
Note the _possible_ leading space are going to be problematic there so
you'd be better with something like:

  ps - e | awk '/firefox/{print $1}'

Though your already presented command is probably most efficient/accurate:

  ps -C firefox -o pid=

thanks,
Pádraig.

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