Taking your first .txt file as an example, let us see what your code is doing (remember that set -xv is your friend when trying to debug a shell script).
The for loop sets file to:
Then you use the assignment:
which sets file1 to:
and then your if statement correctly determines that there is no file with that name and skips the awk statement.
So maybe you would have more luck finding files to process (and therefore producing output), if you would change:
to:
I haven't even tried to figure out what your one-line awk script does, but I do note that with your sample directory listings you will be running this awk code three times and each time you run it, the output produced by the previous run will be destroyed. (Did you perhaps want >> instead of > as the redirection at the end of that script? Or maybe you want to redirect the output from the for loop to that file instead of repeatedly redirecting the output from the awk script. Which you want depends on whether you want to add to output from previous runs of your script or have each run of your script save only the results from that run.)
And, despite what greet_sed said, the if statements: (with or without the $) should have exactly the same effect when using the double square bracket conditional expressions. greet_sed was correct in saying that you need to use:
instead of:
If you had been using one of the test commands:
instead of conditional expressions, then not only would the $ be required, but also double-quotes should be added to protect against filenames containing field separation characters.
These 2 Users Gave Thanks to Don Cragun For This Post:
Basically first redirecting the *.txt s and *.beds in 2 different files and taking out the values before *.txt s in 3rd file removing *.txt from each line.
Later making 3rd file as the primary file and comparing its each line (using for loop) with each line of 2nd files values i.e *.beds(using for loop),by line starting with primary file's each lines .
Once the criteria meet, check the exit status is 0 then go for checking the 2nd condition "$10>30 && $11>49" and if both are met then display primary file's each lines else mention "No Match found".At last removing the temporary files created.
Thanks,
Sanghamitra
Last edited by Sanghamitra C.; 10-16-2016 at 02:26 AM..
Reason: Added explanation of my code
This User Gave Thanks to Sanghamitra C. For This Post:
Please try out this :
Code :
Basically first redirecting the *.txt s and *.beds in 2 different files and taking out the values before *.txt s in 3rd file removing *.txt from each line.
Later making 3rd file as the primary file and comparing its each line (using for loop) with each line of 2nd files values i.e *.beds(using for loop),by line starting with primary file's each lines .
Once the criteria meet, check the exit status is 0 then go for checking the 2nd condition "$10>30 && $11>49" and if both are met then display primary file's each lines else mention "No Match found".At last removing the temporary files created.
Thanks,
Sanghamitra
Hello Sanghamitra C.,
Welcome to forums, hope you will enjoy learning/shraing knowledge here. Not sure if you have tested above code or not. There could be few points which we could to make above code better.
i- echo "$j" | grep "^$i", could be changed to if [[ "$j" == "$j" ]]. Because we need to check either file names are equal or not.
ii- if[ "$10" > "30" && "$11" > "49" ], for this code in shell $10 or $11 fields are not considered like that, they work in this format in awk. You could use cutto take the 10th and 11th field's values.
iii-for i in `cat /mydir/file2` and for j in `cat /mydir/file3`codes could be done by whileloops for an example.
Thanks,
R. Singh
These 2 Users Gave Thanks to RavinderSingh13 For This Post:
[..]and, despite what greet_sed said, the if statements:
(with or without the $) should have exactly the same effect when using the double square bracket conditional expressions. If you had been using test commands:
instead of conditional expressions, then the $ would be required and double-quotes should be added to protect against filenames containing field separation characters.
Hi Don, that does not seem to be an accurate statement.
The $ is still required for variable expansions within double bracket expressions (as well as within single brackets (test commands); a difference would be the double quote protection that would be needed in the case of single brackets)
A situation where $-signs are not required for basic variable expansions are within arithmetic expressions, but that is not the case here.
So IMO greet_sed was right after all.
Last edited by Scrutinizer; 10-16-2016 at 05:44 AM..
These 3 Users Gave Thanks to Scrutinizer For This Post:
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