Hi
I wrote shell script to do the flowing count from 5 and down but doesn’t work please see my program
these the output
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Reading through the comments that have been posted in this thread, it seems clear to me that hadinetcat doesn't understand what the command:
does. Putting it in a loop is adding to the confusion, but the output found in the file file4.txt looks perfectly reasonable except that there should not be any blank lines in the output and there should be three more occurrences of the sequence:
If we look at the commands that will be executed by this loop that produce output, they are:
The man page for grep says the command:
will print the each line in the file numbers that contains the character 5 and print the 1st x lines from numbers that follow the line that contained the 5. So if the contents of the file numbers is:
the 1st command in the list above will print:
the 2nd command will add:
the 3rd command will add:
the 4th command will add:
and each of the remaining six commands will add:
I suspect that the output you're showing here is a subset of the contents of file4.txt and that the output is exactly what I described above as the expected output from your script.
I'm suspecting that English is not your first language, but if what you mean by:
Quote:
I wrote shell script to do the flowing count from 5 and down
is that you want a script to produce the output:
then the easy way to do this (either with bash or with ksh) is:
If this is the output you want, but you insist on using grep -A on the file numbers with the contents shown before, a way to do this roughly following the format of your script would be:
If what you wanted is the output:
and you want to use grep -A to get it, as has been shown above, no loop is required. The single command:
is sufficient.
This User Gave Thanks to Don Cragun For This Post:
Here iw what I want simple and easy
Grep Colombia from file called usa.
Stop at break point .
But doesn’t work it keep repeating the same line ---------- Post updated at 01:38 AM ---------- Previous update was at 12:46 AM ----------
Usa file format
But the problem here it keep repeating the lines
Last edited by Scrutinizer; 01-06-2013 at 04:42 PM..
Reason: code tags, removed font definitions; again for the 2nd part
In message #12 in this thread, I explained (in detail) why grep -A is not an appropriate tool to do what you seem to be trying to do. (It provides multiple copies of some lines because you have a loop and each time through the loop provides a copy of some of the data you want, but apparently not all of what you want.)
If what you want in the example you gave in your message #13 in this thread is the output that you have shown with the heading "Usa file format", there are several easy ways to get it; none of them involve using grep -A (although I could use two invocations of grep -n, some arithmetic in ksh, and then an invocation of grep -A to print what you want). Two much more efficient ways to get what you want (assuming that the data you want to extract is in a file named usa) are:
and
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