get part of file with unique & non-unique string Post: 302354199

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Top Forums Shell Programming and Scripting get part of file with unique & non-unique string Post 302354199 by durden_tyler on Thursday 17th of September 2009 12:04:20 PM

09-17-2009

Registered User

Quote:

Originally Posted by andrewsc

...
Or is there a way to get what I need with one command?
...

Yes, here's one way to do it with Perl:

Code:

$
$ cat -n f1
     1  456789
     2  stm1 - line 1
     3  stm1 - line 2
     4  stm1 - line 3
     5  ENDSTM
     6
     7  123456
     8  stm2 - line 1
     9  stm2 - line 2
    10  stm2 - line 3
    11  stm2 - line 4
    12  ENDSTM
    13
    14  345678
    15  stm3 - line 1
    16  stm3 - line 2
    17  ENDSTM
    18
    19  567890
    20  stm4 - line 1
    21  stm4 - line 2
    22  stm4 - line 3
    23  stm4 - line 4
    24  ENDSTM
    25
$
$ perl -ne 'BEGIN{undef $/} {/.*123456.(.*?)ENDSTM/s && print $1}' f1
stm2 - line 1
stm2 - line 2
stm2 - line 3
stm2 - line 4
$
$

You can also use awk on that data file:

Code:

$
$ ##
$ awk 'BEGIN{x=0}
>      /123456/ {x=1; getline}
>      /ENDSTM/ && x==1 {x=0}
>      x==1 {print}' f1
stm2 - line 1
stm2 - line 2
stm2 - line 3
stm2 - line 4
$
$

HTH,
tyler_durden

Last edited by durden_tyler; 09-17-2009 at 01:21 PM..

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LEARN ABOUT X11R4

line

line(1)                                                            User Commands                                                           line(1)

NAME

       line - read one line

SYNOPSIS

       line

DESCRIPTION

       The  line utility copies one line (up to and including a new-line) from the standard input and writes it on the standard output. It returns
       an exit status of 1 on EOF and always prints at least a new-line. It is often used within shell files to read from the user's terminal.

EXIT STATUS

       Exit status is:

       0        Successful completion

       >0       End-of-file on input.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       sh(1), read(2), attributes(5)

SunOS 5.10                                                          1 Feb 1995                                                             line(1)

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