topic Re: Compare : many and a big .txt files in SAS Programming

Compare : many and a big .txt files

LineMoon — Sun, 10 Apr 2016 16:33:07 GMT

Hello,

I have a so many and big text files .txt.

I want to compare them quickly by using sas and unix commands.

Like this:

R/R1/ab.txt

...

R/R1/wa.txt

==================

R/R2/ab.txt

...

R/R2/wa.txt

I want to compare the R1 and R2 files one by one R1/ab.txt with R2/ab.txt

Thank you for your answer

Re: Compare : many and a big .txt files

Reeza — Sun, 10 Apr 2016 16:34:48 GMT

Your question as it stands is vague.

1. What do you have to start off with?

2. Which part of this are you having difficulty with?

3. What do you want your output to look like?

Re: Compare : many and a big .txt files

LineMoon — Sun, 10 Apr 2016 16:55:14 GMT

So, if i was not clear

I have a folders :R/R1 and R/R2

In R1 and R2, I have a text files : a.ext, b.txt, .... in R1 and R2

Every file in R1, I will be in R2, I want to compare R1/a.txt with R2/a.txt

In the output, I want to get the name of the files with a diff and the difference lines in new file : R/dif/a_dif

Thank you

Re: Compare : many and a big .txt files

Reeza — Sun, 10 Apr 2016 18:35:02 GMT

1. Create a listing of files from directory R1- this is relatively straightforward in a unix environment. (ls filepath or see previous posts)

2. If you're sure that you have the same in each folder you don't need to list the folders

3. Build your compare command

4. Execute compare command and store into a file or dataset

What have tried so far?

Re: Compare : many and a big .txt files

LinusH — Sun, 10 Apr 2016 19:38:01 GMT

Sounds like this is best performed by UNIX she'll programming - so in that sense this is not a SAS question.
What is the use case?

Re: Compare : many and a big .txt files

Kurt_Bremser — Mon, 11 Apr 2016 06:16:00 GMT

The UNIX command for comparing text files is diff. If files A and B are identical, diff A B will produce no output and return with exit code 0; differences will produce output and exit code 1, all other exit codes signal an error like file not found.