Exiting from the script abruptly

Shell Programming and Scripting
1

Hi Team,

Need your help for the below code snippet. I wrote a module to read the file names remote server using file name convention.

Issue : My script is coming out from while loop without reading complete file.

 test1()
{
while read line
do
echo $line
file_nm_convention=`echo $line | awk -F${CFG_DELIMETER} '{print $1}'`
uid=`echo $line | awk -F${CFG_DELIMETER} '{print $2}'`
svr=`echo $line | awk -F${CFG_DELIMETER} '{print $3}'`
dir=`echo $line | awk -F${CFG_DELIMETER} '{print $4}'`
ssh  $uid@$svr "cd $dir;ls -lrt $file_nm_convention"  1>${LST_FILE_NM}
cat $LST_FILE_NM 
done  < ${CFG_FILE}
exit
}

cat cfg_file
test*.ack|kittuad|svr_abc|/home/kittuad
s_test*.ack|kittuad|svr_abc|/home/kittuad

I am getting output only for test*.ack but not for s_test*.ack

2

How about:

CF=cfg_file

cat > $CF << EOF
test*.ack|kittuad|svr_abc|/home/kittuad
s_test*.ack|kittuad|svr_abc|/home/kittuad
EOF


oIFS="$IFS"
IFS="|"
while read file user svr home;do
	printf '%s\n' \
		"" \
		"File: $file" \
		"User: $user" \
		"SVR: $svr" \
		"Home: $home"
	ssh $user@$svr << EOF
echo "Tasks on the remote"
cd $home
ls $file
EOF

done<$CF
IFS="$oIFS""

Produces this for me: (added the ssh line later)

File: test*.ack
User: kittuad
SVR: svr_abc
Home: /home/kittuad

File: s_test*.ack
User: kittuad
SVR: svr_abc
Home: /home/kittuad

Hope this helps

EDIT:
Dont know where LST_FILE_NM is, but its not really required... unless you do another access somewhen later.
But since you just cat the regular ls output, you can loose cat

3

thanks for your reply. I got the solution

made below changes to the code and it is working

 test1()
{
while read line
do
echo $line
file_nm_convention=`echo $line | awk -F${CFG_DELIMETER} '{print $1}'`
uid=`echo $line | awk -F${CFG_DELIMETER} '{print $2}'`
svr=`echo $line | awk -F${CFG_DELIMETER} '{print $3}'`
dir=`echo $line | awk -F${CFG_DELIMETER} '{print $4}'`
ssh  $uid@$svr "cd $dir;ls -lrt $file_nm_convention"  1>${LST_FILE_NM} </dev/null
cat $LST_FILE_NM 
done  < ${CFG_FILE}
exit
}
4

Yes ssh was eating your standard input redirect from /dev/null will fix it for you.

It's worth looking at sea's solution as there are some nice techniques for extracting the uid, svr, etc without spawning 3 sub-shells and 3 awks.