Delete specific strings in a file Post: 302931125

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Top Forums UNIX for Dummies Questions & Answers Delete specific strings in a file Post 302931125 by senhia83 on Saturday 10th of January 2015 08:41:43 PM

01-10-2015

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Try

Code:

 
 $ cat  tmp
 >C4603985
 ATGFFGTGFAGGHTGHTAHGHATAGGTHTTHAHAGHGCHATCACCTGCGATATGGGGGCCACCATAGATAGTAAAGATGGTTCTTACCFAGATGFFGTGFAGGHTGHTAHGHATAGGTFAGATGFFGTGFAGGHTGHTAHGHATAGGTFAGATGFFGTGFAGGHTGH>C3914137
 CATCTTGFFGTGFAGGHTGHTAHGHATAGGTHTTHAHAGHGCHTTATTAGGGAAGAAACCTTCATTCTCTTTTTAATTTTCTTTTTCAAGATGCAATTGFFGTGFAGGHTGHTAHGHATAGGTHTTHAHAGHGCHCTGTATCACCAGTTATATATAGATTGCATCTTGATATAGATATAGTG
 >stt4468869
 SQAERTYUVSAASSFFAGATGFFGTGFAGGHTGHTAHGHATAGGTHTTHAHAGHGCHAHAHGHACTHTGHTGGHCAHAANGGGATATAACCAGGTGGAAGGTAGACTACTTTGATAGTTTTTCTCCAGTNGNGCANAAGTTAGTAACAGTGAGAATTTTCTTAGCAATCGCAG
 >C4913369
 GTERTYUVSAASSFFAGATGFFGTGFAGGHTGHTAHGHATAGGTTGCVTCABGCGBATBAAGATBTBTHYHBHHTAGCGCCCTACGTACGATGCAGTAAATTCCGTAACGTAGTGGTTGAGATATCTCAGTAAGCTTCACGTTGACGTTAGTTBTBTAATCGCCCGTGATGDDDGTGTTAGAATGTTTAAAGGATATACAT
 >stt4688097
 GCDDDDCJJJJAWDDDDFFFFFCTCATATCGCAGGTGATTCCAACAGATCGCATGAGAGGTATGTCCGAGAGGCAAATCATTCTTTTCGGCTCTATGGATCCGAAGGACCTGCGAAAAGGGCAAAACCGACCTCGGACGAGATTGTGTTTACGGACGAGCATGAGAGGTATGTCCGAGAGGCAAATCATTCTTTTCGGCTCTATGGATCCGAAG
 　
 $ awk '{ if ( $0~/>st/ ) {
 > a=1
 > }
 > if ( $0 ~/>C/ ) {
 > a=0}
 > if ( a==1)
 > print $0
 > }' tmp
 >stt4468869
 SQAERTYUVSAASSFFAGATGFFGTGFAGGHTGHTAHGHATAGGTHTTHAHAGHGCHAHAHGHACTHTGHTGGHCAHAANGGGATATAACCAGGTGGAAGGTAGACTACTTTGATAGTTTTTCTCCAGTNGNGCANAAGTTAGTAACAGTGAGAATTTTCTTAGCAATCGCAG
 >stt4688097
 GCDDDDCJJJJAWDDDDFFFFFCTCATATCGCAGGTGATTCCAACAGATCGCATGAGAGGTATGTCCGAGAGGCAAATCATTCTTTTCGGCTCTATGGATCCGAAGGACCTGCGAAAAGGGCAAAACCGACCTCGGACGAGATTGTGTTTACGGACGAGCATGAGAGGTATGTCCGAGAGGCAAATCATTCTTTTCGGCTCTATGGATCCGAAG

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LEARN ABOUT LINUX

split

SPLIT(1)							   User Commands							  SPLIT(1)

NAME

       split - split a file into pieces

SYNOPSIS

       split [OPTION]... [INPUT [PREFIX]]

DESCRIPTION

       Output  fixed-size  pieces  of  INPUT to PREFIXaa, PREFIXab, ...; default size is 1000 lines, and default PREFIX is `x'.  With no INPUT, or
       when INPUT is -, read standard input.

       Mandatory arguments to long options are mandatory for short options too.

       -a, --suffix-length=N
	      use suffixes of length N (default 2)

       -b, --bytes=SIZE
	      put SIZE bytes per output file

       -C, --line-bytes=SIZE
	      put at most SIZE bytes of lines per output file

       -d, --numeric-suffixes
	      use numeric suffixes instead of alphabetic

       -l, --lines=NUMBER
	      put NUMBER lines per output file

       --verbose
	      print a diagnostic just before each output file is opened

       --help display this help and exit

       --version
	      output version information and exit

       SIZE may be (or may be an integer optionally followed by) one of following: KB 1000, K 1024, MB 1000*1000, M 1024*1024, and so on for G, T,
       P, E, Z, Y.

AUTHOR

       Written by Torbjorn Granlund and Richard M. Stallman.

REPORTING BUGS

       Report split bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report split translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2010 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       The  full  documentation  for split is maintained as a Texinfo manual.  If the info and split programs are properly installed at your site,
       the command

	      info coreutils 'split invocation'

       should give you access to the complete manual.

GNU coreutils 8.5						   February 2011							  SPLIT(1)

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