I think I understand now
you want the text between the first Start and first Exit
you can throw in a last to exit the loop when matching Exit
open (DATA,"<xxx.txt") || die "Can't open xxx.txt: $!\n";
while(<DATA>) {
    if (/Start context/ .. /\* Exit context \*/)  {
         print unless /(Start context|\* Exit context \*)/;
         last if /\* Exit context \*/;
    }
}

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In reply to Re: I still can't get only the necessary lines from the file. by ercparker
in thread I still can't get only the necessary lines from the file. by sashac88

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