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bug#11990: Tail does not behave as expected
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From: |
Pádraig Brady |
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Subject: |
bug#11990: Tail does not behave as expected |
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Date: |
Thu, 19 Jul 2012 17:56:38 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:6.0) Gecko/20110816 Thunderbird/6.0 |
tag 11990 + notabug
close 11990
thanks
On 07/19/2012 04:25 PM, Rodolfo Aramayo wrote:
> Version:tail (GNU coreutils) 8.17
>
> Please take a look at this output:
>
> 259$ tail supercont10r12_01_wt_-fasta.gff3
> Supercontig_10.1 protein2genome:Proteins_wt protein_match 9766147
>
> 260$ tail supercont10r12_0{1..2}_wt_-fasta.gff3
> ==> supercont10r12_01_wt_-fasta.gff3 <==
> Supercontig_10.1 protein2genome:Proteins_wt protein_match 9766147
> ==> supercont10r12_02_wt_-fasta.gff3 <==
> Supercontig_10.2 protein2genome:Proteins_wt match_part 4451411 4452067
>
> 261$ tail -1 supercont10r12_01_wt_-fasta.gff3
> Supercontig_10.1 protein2genome:Proteins_wt match_part 9771037 9771263
>
> 262$ tail -1 supercont10r12_0{1..2}_wt_-fasta.gff3
> tail: option used in invalid context -- 1
>
>
> This is not what I expected
Yes you need to use `tail -n1 ...` to get consistent results.
http://www.gnu.org/software/coreutils/faq/coreutils-faq.html#Old-tail-plus-N-syntax-now-fails
cheers,
Pádraig.