topic Re: Shell script help in Operating System - HP-UX

Shell script help

Andy Koumi_1 — Tue, 13 Jul 2004 03:04:49 GMT

Hi,

I've been tasked with creating a unix shell script that will select the latest created file and ftp it to another i.e. the file is currently generated every 12 hours (at 00:00 & 12:00) and 7 days worth are kept at any one time. Therefore the files in the directory are as follows:

-rw-rw-rw- 1 nortel nortel 12423 Jul 5 00:03 GSIT20040705000002.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 5 12:03 GSIT20040705120004.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 6 00:03 GSIT20040706000002.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 6 12:03 GSIT20040706120004.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 7 00:03 GSIT20040707000003.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 7 12:03 GSIT20040707120005.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 8 00:03 GSIT20040708000003.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 8 12:03 GSIT20040708120005.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 9 00:03 GSIT20040709000003.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 9 12:03 GSIT20040709120002.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 10 00:03 GSIT20040710000002.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 10 12:03 GSIT20040710120005.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 11 00:03 GSIT20040711000002.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 11 12:03 GSIT20040711120005.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 12 00:03 GSIT20040712000002.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 12 12:03 GSIT20040712120005.drf
-rw-rw-rw- 1 nortel nortel 12423 Jul 13 00:03 GSIT20040713000003.drf

Therefore what I need to do is at midnight after the file has been created I will need to select the latest file and ftp it to another server and at mid-day again I will have to perform the same task but with the latest file generated at midday etc, etc. As can be seen above the files are generated automatically and contain the date & time in the filename.

I'm a beginner at shell scripting and would greatly appreciate any help that can be provided.

Cheers

AK

Re: Shell script help

Steve Steel — Tue, 13 Jul 2004 03:23:59 GMT

Hi

Use the system commands to find the newest file such as

dir=/home/steves/tmp
ls -1tr $dir|tail -n 1|while read line
do
file=$(find $dir -name $line)
echo $file
done

Put your dir where mine is and file is the newest one

http://www.shelldorado.com/

Is a good place for a learner

Steve Steel

Re: Shell script help

Victor BERRIDGE — Tue, 13 Jul 2004 03:24:44 GMT

Hi,
Since I dont know how you want your ftp, all I can do here is how to select your file:
ll -ltÂ¦grep GSIT Â¦ head -n 1

Good luck
Vi

Re: Shell script help

Franky_1 — Tue, 13 Jul 2004 03:26:44 GMT

Hi Andy,

you could find out the latest file by using "tail -1" command

For example :

for i in `ls /|tail -1`
do
ftp $i ...
done

HTH

Franky

Re: Shell script help

Victor BERRIDGE — Tue, 13 Jul 2004 03:27:23 GMT

Sorry for the strange char, dont know where they come from...
You should read "pipe" I will give a try with another char | and se if it displays correctly

All the best
Victor

Re: Shell script help

Victor BERRIDGE — Tue, 13 Jul 2004 03:30:43 GMT

Better so:
Start again:
You wanted 1 file - the latest...

ll -lt | grep GSIT | head -n 1

There you are

All the best
Victor

Re: Shell script help

Sanjay Kumar Suri — Tue, 13 Jul 2004 03:39:55 GMT

Check this

for i in `ls -t`
do
echo $i
# Other commands...
exit
done

sks

Re: Shell script help

Andy Koumi_1 — Tue, 13 Jul 2004 03:41:36 GMT

Thanks guys!!

Cheers

Andy

Re: Shell script help

Indira Aramandla — Tue, 13 Jul 2004 03:49:38 GMT

Hi AK,

YOu can schedule the script to run twice a day through cron job. i.e

00 00,12 * * * /path/script_name > output_log

and the script_name can contain the following line.
Initiall touch a temp_file. Then find the GSIT file that was newer than the touched file as.

find /path -name *GSIT* -newer touched_temp_file |cpio...........
and after the copy to thebother server
remove the touch_temp_file
touch temp_file again.

So that next time the GSIT* file generated will be newer than the touched file. And you have this files generated only twice a day at 00:00 and 12:00. So when the cron job copies the file and touched the temp file, next GSIT file will be newer than the touched file.

I hope this helps You.

Indira A

Re: Shell script help

Bharat Katkar — Tue, 13 Jul 2004 04:10:46 GMT

Hi,
Just to participate,
Similar to Victor but this one will only return the Filename:

# ls -t | head -n 1

You can even assign the name to an variable and write a script to FTP the file using that varible.

# var1=`ls -t | head -n 1`
(remember these are back quotes)

Hope that helps.
Regards,

Re: Shell script help

Muthukumar_5 — Tue, 13 Jul 2004 04:28:08 GMT

hai,

Get the recent created file with a line script as,

#script.ksh
# usage:

filename=$(ls -l | grep -v '^total*' | sort -r | head -1)

username=$1
passwd=$2
location=$3

ftp -i -n $server <<-EOF 2>/dev/null
user $usename $passwd
put $filename $location
bye
EOF

# total message will come if we use ll or ls -l

You can use rcp too instead of ftp for this. make "+" entry in $HOME/.rhosts file on two server

Simulate this in a cron job at your required time (at 00:00 & 12:00)

Regards,
Muthukumar.
Muthukumar.