do you have idea what is the limit to zip the file.
+ tar -cvf - today.txt
tar: Size of today.txt >= 8GB. Not dumped.
See if your version of tar supports an -E option to handle large files. It may be a different letter option -. You want "extended" or "largefile" support.
But.
Why are you trying to tar a gigantic file to the screen? And tar is NOT zip or gzip. If you want to compess a file use gzip (or zip or 7zip or compress or whatever compression tool your system has that meets your needs).
/usr/local/bin/zip
Do you have any idea how much the files can be zipped maximum if I am using the above utiltity.
How well it compresses depends more on the data than the compressor. ASCII text can compress very well, binary data rather less so, especially if the data is fairly compact already.
Older versions of zip may not support files larger than 4 gigabytes.