gzip problem

Shell Programming and Scripting
1

Hi All,

I am zipping a file using
gzip -cq XYZ.txt > XYZ.txt.gz command.

file got created with name XYZ.txt.gz

but when i execute the following command i am getting errors,

$ gzip -t XYZ.txt.gz
gzip: XYZ.txt.gz: invalid compressed data--crc error
gzip: XYZ.txt.gz: invalid compressed data--length error

What could be problem, where i am doing wrong. Please help me out.

Regards,
Ravi Kumar Garlapati

2

-q option of gzip supresses all warnings. You may have missed some important message there. Try running the command without -q option.

3

i did not get any warnings,

i tried this by gzip -c XYZ.txt > XYZ.txt.gz command aswell.

still the same errors are encountered.

i am unable to unzip the file.

4

Can i know reason of getting these errors.

$ gzip -t XYZ.txt.gz
gzip: XYZ.txt.gz: invalid compressed data--crc error
gzip: XYZ.txt.gz: invalid compressed data--length error

5

These errors mean that your gz file is corrupt. There could have been an error while writing the file while running gzip -cq. As Yogesh has said before, try running the gzip -c command again without the -q option.

6

gzip automatically stores the zipped file in XYZ.txt.gz, you do not need to do a redirect. What you are doing with the redirect is storing any gzip messages in XYZ.txt.gz, instead of the actual zipped data.

Just try "gzip XYZ.txt"

7

Sorry, but that's plain wrong. The OP is using 'gzip -c'. Check the gzip man page to see what the '-c' switch does. What he is doing is fine, just removing the -q could let him see if any error is being thrown.