File checking using shell script

[charmingcann]

I have this shell script that gets a file from a particular server :

HOST_IP=111.111.111.11
E_DEST=$SAMPLE_TOP/in
E_USERID='mis'
cd $E_DEST
ftp -n -v -i << EOF
open $FTP_HOST_IP
user $FTP_USERID
ascii
lcd $E_DEST
get file1
bye
EOF

I need to check whether the file is existing or not. If not, a message will be printed &quot;file not found&quot; and then exit from the script.

Thanks

 

[Themuppeteer]

if [ -e yourfile ] blablabla Greetz,

NOSPAM_themuppeteer@hotmail.com (for mails, remove the NOSPAM_)

http://www.themuppeteer.tk

Don't eat yellow snow...and don't mess with your fstab!

 

[Themuppeteer]

perhaps a bit more specific is:

if [ ! -e &quot;/home/me/myfile&quot; ]; then
echo &quot;file not found&quot; Greetz,

NOSPAM_themuppeteer@hotmail.com (for mails, remove the NOSPAM_)

http://www.themuppeteer.tk

Don't eat yellow snow...and don't mess with your fstab!

 

[charmingcann]

Hi, im getting error &quot;invalid command&quot; . the host_ip is a HP3K server and from that i will be getting a file and tranfer to an oracle server.

im not sure if the code and the place to put this code is correct :

HOST_IP=111.111.111.11
E_DEST=$SAMPLE_TOP/in
E_USERID='mis'
cd $E_DEST
ftp -n -v -i << EOF
open $FTP_HOST_IP
user $FTP_USERID
if [ ! -e file1]; then
echo 'file not found'
else
echo 'file found'
fi;
bye
EOF

 

[Themuppeteer]

its just aplain script ?

try putting

#!/bin/sh

in the beginning of the file. Greetz,

NOSPAM_themuppeteer@hotmail.com (for mails, remove the NOSPAM_)

http://www.themuppeteer.tk

Don't eat yellow snow...and don't mess with your fstab!

 

[KenCunningham]

Unfortunately, I don't think the if construct can be used within an ftp session. If your file, isn't found, you should get an error to that effect - perhaps you could use that in some way by redirecting the error to a log file, something like:

ftp -n IP_Address <<! > grotfile

HTH.

 

[charmingcann]

still the same invalid command and there should be a message saying file exists

 

[Themuppeteer]

Thats what I use in a normal script. But I'm no expert in scripts. So I'd better leave it to KenCunningham.
Good luck. Greetz,

NOSPAM_themuppeteer@hotmail.com (for mails, remove the NOSPAM_)

http://www.themuppeteer.tk

Don't eat yellow snow...and don't mess with your fstab!

 

[charmingcann]

thanks Themuppeteer.

Hi Ken,
Im not sure how to do this in my script? can you help me to include this code using the shell script above?


Thanks..

 

[KenCunningham]

This might work (I use a similar arrangement in one of my scripts):

HOST_IP=111.111.111.11
E_DEST=$SAMPLE_TOP/in
E_USERID='mis'
cd $E_DEST
ftp -n -v -i << EOF > ftp.log
open $FTP_HOST_IP
user $FTP_USERID
bye
EOF

Then take a look at what's written to ftp.log when the file is found and when it isn't - there should be some kind of distinct message which will indicate either case. You can then write a grep for this like:

grep <success_text_in_ftp.log> ftp.log
if [ $? = 0 ]
then
echo 'File found'
else
echo 'File not found'
fi

Hope this helps - sorry if it's a little confusing.

 

[KenCunningham]

Sorry mistype above, ignore the spurious ; in the grep line. Cheers.

 

[KenCunningham]

Hello again. Don't know how I missed this, but it is possible to run commands on the remote machine from within ftp by preceding them with a !

Thus, you could do an ls for your file and test for it's existence using the if [ $? = 0 ] construct above, then echo the result to your log file.

I've never used the ! within ftp myself, but I might well start now! Cheers.

 

[Annihilannic]

! is for running commands on the local host so won't do what you require. Annihilannic.

 

[AHinMaine]

wget might be a better solution.

wget &quot;ftp://userassword@hostname.example.com/filename&quot;

If the file doesn't exist, it returns with an exit status of 1, otherwise it grabs the file.

 

[jamisar]

you cannot use test in a ftp script
use ls|dir in ftp cmd pipe the output to grep|sed or
what ever you want, then re-do a ftp

ftp .....<<QQ >output
user ...
cd ..
ls..
quit
QQ
grep -s XXX output >/dev/null || exit
ftp .....<<QQ
user ...
cd ..
get XXX
quit
QQ
don't use the '-i' option


-----------
when they don't ask you anymore, where they are come from, and they don't tell you anymore, where they go ... you'r getting older !

 

[charmingcann]

Ok guys,thanks for the help.

 

[art15t]

Jamisar got it right!

I used to use a similar method to generate subsequent generation numbers for my outgoing filenames

get the listing first....

FILE=/tmp/RESFILE$$

echo &quot;
cd $DIR
ls -l $FILE
bye&quot;|ftp IP

if [ -z &quot;`grep filename $FILE`&quot; ]
then
echo &quot;file not found on remote server!&quot;
else
# go get it
echo &quot;
cd $DIR
get filename
bye&quot;|ftp IP
fi

The above was using netrc entries, so you'll need to modify if not using this method! i.e. username and password with ftp -i -n

ART