Shell Programming and Scripting

thats fine I'll google it. I have some question here, with same code we were using, can we add something to do this..

1, I need to get the .txt files which are greater than 10mb in size from all servers.(i dont need every .txt file)
2, can we point output to file?
3, if we can point to the file, can we send this file to my mail?

basically this is my final requirement.

Thanks once again.

Code:

for host in foo bar baz quux; do
  ssh $host 'ls -l /some/path/*.txt' | awk '$5 > 10000000 { print "'"$host"': $0 }'
done  >file.out

test -s file.out && mailx -s "Files bigger than 10M" you@example.com <file.out

You could try to avoid using a temporary file, but just add "rm file.out" at the end if you don't want to keep it.

Thanks for your reply,

I'm getting the output, but I can't tell which file belongs to which server. Can we get output like this..

servername: abc
-rw-r--r-- 1 root root 789222 Aug 14 11:03 big.txt
-rw-r--r-- 1 root root 789342 Aug 14 11:03 big.txt
-rw-r--r-- 1 root root 7823252 Aug 14 11:03 big.txt
servername: xyz
-rw-r--r-- 1 root root 789222 Aug 14 11:03 big.txt
-rw-r--r-- 1 root root 789342 Aug 14 11:03 big.txt
-rw-r--r-- 1 root root 7823252 Aug 14 11:03 big.txt
servername: mnc
-rw-r--r-- 1 root root 789222 Aug 14 11:03 big.txt
-rw-r--r-- 1 root root 789342 Aug 14 11:03 big.txt
-rw-r--r-- 1 root root 7823252 Aug 14 11:03 big.txt


Thanks

The awk snippet adds a host: prefix to each line precisely for this reason. I had it the way you describe it at first, but having the information on each line makes the processing somewhat simpler to code. You can post-process it to "lift up" the host before the lines it describes, of course. Are you not seeing the host name at the beginning of every line of ls output?

(Maybe you have an earlier version of the script; I edited it a couple of times after initially posting it. Sorry for the mess.)

No I dont see the server name at the begining of ls output. its giving all together and I dont see any server name.

Thanks

And the script above is the one you are running, with the $host with the complicated quoting in the awk part? Actually the quoting isn't even right, there's a double-quote missing after the colon. I've edited it into the quoted script above.

You could add echo servername: $host before the ssh but then the logic for finding out whether or not an email should be sent needs to be changed, too; and there will be a servername: header for all servers, regardless of whether they had any files larger than 10M or not. Maybe that would be acceptable, though.

I just tried with the code...initially it gave me some syntax errors and I could resolve it. but I'm getting only ipaddress.
Here is the code again...

for host in 111.111.111.1111 222.222.222.222; do
ssh $host 'ls -l /some/path/*.txt' | awk '$5 > 40959 { print "'"$host"'";$0 }'
done >file.txt

Thanks again.