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Full Discussion: awk split
Top Forums UNIX for Dummies Questions & Answers awk split Post 302546934 by heecha on Friday 12th of August 2011 02:06:34 PM
Old 08-12-2011
awk split

Hi Folks,

I have lines that look like this:

Code:
>m110730_101608_00120_c100168052554400000315046108261127_s1_p0/7/29_426ACGTGCTATGCGG
>m110730_101608_00120_c100168052554400000315046108261127_s1_p0/7/469_894ACGTGCTATGCGG

I want to split all lines into:

Code:
>m110730_101608_00120_c100168052554400000315046108261127_s1_p0/7/29_426     ACGTGCTATGCGG
>m110730_101608_00120_c100168052554400000315046108261127_s1_p0/7/469_894 ACGTGCTATGCGG

Then I want to print:

Code:
ACGTGCTATGCGG
ACGTGCTATGCGG

Code:
awk '{split($0,a,"[A;C;G;T]");print a[1]}'

gives:

Code:
>m110730_101608_00120_c100168052554400000315046108261127_s1_p0/7/29_426
>m110730_101608_00120_c100168052554400000315046108261127_s1_p0/7/469_894

but

Code:
awk '{split($0,a,"[A;C;G;T]");print a[2]}'

gives nothing.

I can split in other ways, e.g.,

Code:
awk '{split($0,a,"/[0-9]_[0-9]");print a[2]}'

or

Code:
awk '{split($0,a,"/[0-9]_[0-9][A;C;G;T]");print a[2]}'

a[1] always prints correctly, but a[2] is always "empty".

What am I doing wrong?

Thanks for your help.
Robert

Last edited by zxmaus; 08-12-2011 at 11:44 PM..
 

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