Just a quick question: How does gzip behave under linux if it's source is a file that is currently being written to by a different process? Basically, in my below code I want to make sure that there is ultimately no loss of data; ie. the gzip command runs until it "catches up" to the end of the file while the file is expanding, and then the cat /dev/null clears the file immediately, therefore the next write to the file happens when it is empty, and all prior data in the file is safely preserved in the archived gzip file. How does my code look?
I know in some OS's that when a file handle is locked for reading you get the file contents up to the EOF at the time of lock, not up to the EOF at the current time.
I guess another way to put my question would be is there a way to "atomize" these commands:
...such that I can be guaranteed that no other process gets a chance to write data to $CAPDIR/$FILE in between the call to gzip and the call to cat /dev/null?
Hello Everyone,
Here is what I am trying to do. I have four text files, I want to gzip them under unix and mail the zipped file via outlook. I am able to do this easily enough, but using winzip or pkunzip to unzip the file, there is only one file. (In essence, all four files were... (2 Replies)
The windows version of gzip supports pretty much unlimited file sizes while the one we have in solaris only goes up to a set size, one or two gigs I think.
Is there a new version of gzip I can put on our systems that supports massive file sizes? (2 Replies)
Hi,
There are multiple files in a directory with different names.How can they be gzipped such that the timestamp of the files is not changed. (2 Replies)
Hello experts,
I run Solaris 9. I have a below script which is used for gunzip the thousand files from a directory.
----
#!/usr/bin/sh
cd /home/thousands/gzipfiles/
for i in `ls -1`
do
gunzip -c $i > /path/to/file/$i
done
----
In my SAME directory there thousand of GZIP file and also... (4 Replies)
Hello. I have a scripting query that I am stumped on which I hope you can help with.
Basically, I have a ksh script that calls a process to create n number of binary files. These files have a maximum size of 1Gb. The process can write n number of files at once (parallel operation) based on the... (4 Replies)
Is there any way to compress only the files with .xml extension within a folder which in turn has many sub folders?
gzip -r9 path/name/*.xml is not working
This compression is done in the Windows server using Batch script. (2 Replies)
Hi,
I have 1000 of files in a folder with the file extension as .csv
In this some of the files are already zipped and its looks like filename.csv.gz
Now i need to zip all the files in the folder to free some disk space. When i give gzip *.csv
It prompts me to overwrite filename.csv.gz... (5 Replies)
Hi All,
I have a random test file: test.txt, size: 146
$ ll test.txt
$ 146 test.txt
Take 1:
$ cat test.txt | gzip > test.txt.gz
$ ll test.txt.gz
$ 124 test.txt.gz
Take 2:
$ gzip test.txt
$ ll test.txt.gz
$ 133 test.txt.gz
As you can see, gzipping a file and piping into gzip... (1 Reply)
Hi
Please can you help me in writing a script to find files on a specific directory, and of extension "tap" but only of the month of september, gzip and move them to another directory.
Your help will be appreciated. (4 Replies)
Hi Guys,
I am using RHEL5 and Solaris 9 & 10.
I want to tar and gzip my files then remove them after a successful tar command...
Lets say I have files with extension .arc then I want to tar and gzip these files.
After successful tar command I want to remove all these files (i.e .arc).
... (3 Replies)
Discussion started by: Phuti
3 Replies
LEARN ABOUT OPENSOLARIS
gzforce
GZFORCE(1) General Commands Manual GZFORCE(1)NAME
gzforce - force a '.gz' extension on all gzip files
SYNOPSIS
gzforce [ name ... ]
DESCRIPTION
gzforce forces a .gz extension on all gzip files so that gzip will not compress them twice. This can be useful for files with names trun-
cated after a file transfer. On systems with a 14 char limitation on file names, the original name is truncated to make room for the .gz
suffix. For example, 12345678901234 is renamed to 12345678901.gz. A file name such as foo.tgz is left intact.
SEE ALSO gzip(1), gznew(1), gzmore(1), gzgrep(1), gzdiff(1), gzexe(1)ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWgzip |
+--------------------+-----------------+
|Interface Stability | Committed |
+--------------------+-----------------+
NOTES
Source for gzip is available on http://opensolaris.org.
GZFORCE(1)