Ok, this is the situation before the script starts from crontab:
The last bold/red file is in use by tcpdump, but the script just gzip all the file even the one in use:
And this is the debug file:
Maybe tcpdump open a new file, but I've to test it. BTW, I don't understand why the script in root crontab doesn't work!
I want to be able to lock a file for 60 minutes so that an automated monitoring program will not execute the script more that once an hour. I have never used a lock file but have heard that is what I need to use. Does anyone have any examples of how I would use this?
lock 60 filename.ksh ---?... (6 Replies)
Hi,
I want to do the foll steps:
1. Check if someone has a lock on my file1.
2. if file1 is locked by any other user
wait in a loop till another user releases lock
3. when lock released, lock file1.
4. do procesing (write) on file1.
5. processing complete. release lock on file1.
... (2 Replies)
hi Guys,
I just wondering how I can check and ensure a file is not locked by another process. I need to modify a file using sed but I need to ensure that is not being modified by another process at the same time. Thanks.
Harby. (2 Replies)
Hi,
I want to list out all files which are lock by some process.
ex- ~/critical
I want to list all files in critical directory which has been locked.
I need this very badly. Any suggestion highly appriciated.
Regards,
Ashok (1 Reply)
using OS X and the Terminal, I'd like to find all locked files in a specified directory, unlock them, and print a list of those files that were unlocked
how can I do this?
I'm familiar with chflags nouchg for unlocking one file but not familiar with unix enough to do what I'd like.
Thanks! (0 Replies)
I want to gzip a file and append the creation date to the end of the file. How can I accomplish this task. Basically they are log files which need a creation date stamp appended to make sure they do not overwrite other log files.
-jack (3 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)
I was trying to read the file to create a table in SAS and I got error as follows while I read.
Resource is write-locked by another user. File
=/usr/sas/sas_config/Lev1/SASApp/StoredProcessServer/Logs/SASApp_STPServer_2015-09-29_tmp_18208.log. System Error Code =
0.
ERROR: File is in... (10 Replies)
Hi Experts,
I am beginner to shell scripting, I have a archive script which will connect to the FTP server and archive the files from FTP source location to FTP archive location.
Now the problem here is, the script working for few files and not working for few.I am facing the below error... (1 Reply)
Discussion started by: spidy
1 Replies
LEARN ABOUT MOJAVE
znew
ZNEW(1) BSD General Commands Manual ZNEW(1)NAME
znew -- convert compressed files to gzipped files
SYNOPSIS
znew [-ftv9K] file ...
DESCRIPTION
The znew utility uncompresses files compressed by compress(1) and recompresses them with gzip(1).
The options are as follows:
-f Overwrite existing '.gz' files. Unless this option is specified, znew refuses to overwrite existing files.
-t Test integrity of the gzipped file before deleting the original file. If the integrity check fails, the original '.Z' file is not
removed.
-v Print a report specifying the achieved compression ratios.
-9 Use the -9 mode of gzip(1), achieving better compression at the cost of slower execution.
-K Keep the original '.Z' file if it uses less disk blocks than the gzipped one. A disk block is 1024 bytes.
SEE ALSO gzip(1)CAVEATS
The znew utility tries to maintain the file mode of the original file. If the original file is not writable, it is not able to do that and
znew will print a warning.
BSD January 26, 2007 BSD