Currently I am in this directory-
/data/real/test
When I do ls -lt
at the command prompt. I get like below something-
REALTIME_235000.dat.gz
REALTIME_234800.dat.gz
REALTIME_234600.dat.gz
REALTIME_234400.dat.gz
REALTIME_234200.dat.gz
How can I consolidate the above five dat.gz files
into one dat.gz file
in Unix without any data loss. I am new to Unix and I am not sure on this. Can anyone help me on this?
Update:-
I am not sure which is the best way whether I should unzip each of the five file then combine into one? Or
combine all those five dat.gz
into one dat.gz
?
In Word, click Tools in the top menu and select the Compare and Merge Documents option, as shown below. Find the document you want to merge. You have the option of merging the selected document into the currently open document or merging the two documents into a new document.
Open Acrobat to combine files: Open the Tools tab and select "Combine files." Add files: Click "Add Files" and select the files you want to include in your PDF. You can merge PDFs or a mix of PDF documents and other files.
Select the files you want to merge using the Acrobat PDF combiner tool. Reorder the files if needed. Click Merge files. Sign in to download or share the merged file.
Simply visit the Acrobat Online website and upload the files you want to merge. Reorder the files however you like and then click Merge files. After that, just download the merged PDF. This will combine all the JPGs-turned-PDFs into a single PDF you can easily share or view.
If it's OK to concatenate files content in random order, then following command will do the trick:
zcat REALTIME*.dat.gz | gzip > out.dat.gz
Update
This should solve order problem:
zcat $(ls -t REALTIME*.dat.gz) | gzip > out.dat.gz
What do you want to happen when you gunzip the result? If you want the five files to reappear, then you need to use something other than the gzip (.gz) format. You would need to either use tar (.tar.gz) or zip (.zip).
If you want the result of the gunzip to be the concatenation of the gunzip of the original files, then you can simply cat (not zcat or gzcat) the files together. gunzip will then decompress them to a single file.
cat [files in whatever order you like] > combined.gz
Then:
gunzip combined.gz
will produce an output that is the concatenation of the gunzip of the original files.
The suggestion to decompress them all and then recompress them as one stream is completely unnecessary.
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