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For 2023 (and 2024 ...) - we are now fully retired from IT training.
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reading particular lines of a file

Posted by Indrasen (Indrasen), 13 September 2007
Hi all,

I am new to this forum and I have a small problem while reading a file...

i want to avoid read some lines in a file and ignore the rest like say..

P0>  0x0 0x00022597 : * 31 C0 : 2
      XOR EAX, EAX

     P0>RAX: 0x00000000
     P0>EIP: 0x00022599

i dont want to read line starting with P0> but want to read line after that...how can this be done ? some one please help me

Posted by admin (Graham Ellis), 13 September 2007
Unless you know exactly where you want to read from in the file (in terms of the number of bytes of data in), you cannot avoid reading the PO> lines.   What you should do is to read all the lines in a loop, and use an if command within the loop to skip over the lines you want to ignore.

Posted by Indrasen (Indrasen), 20 September 2007
Hi Graham,

Thanks for your reply, I was able to do that using the folowing command....

if {[regexp "P0>(.*)\$" $line] == 0} {
.....
.....
}

to skip multiple lines i am using multiple if statements...




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