need to edit file from script

[cp2000]

I need to be able to edit a file from my script. I think I have all the pieces togather except.....How do I pass a variable to the ex editor. Right now I am trying --

ex $FILENAME <<EOF
1
/$OLD_DATE
.s/$NEW_DATE/$NEW_DATE/
wq
EOF


If I have the wrong forum I would appreciate a redirect...

 

[vgersh99]

what variable are you trying to pass?
It seems like you already have variable in theside the here-doc for the 'ex'.

vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[cp2000]

$OLD_DATE and $NEW_DATE are defined earlier in the script. I need to pass them to the ex commandline. The above is how I am trying (unsuccessfully) to do it.

I see your confusion though. I got my example wrong. Try this:

ex $FILENAME <<EOF
1
/$OLD_DATE
.s/$OLD_DATE_DATE/$NEW_DATE/
wq
EOF

 

[vgersh99]

you're ALREADY passing the variable into the herein-doc portion of 'ex'. The 'herein-doc' supplied variables are evaluated by the surrounding shell _prior_ to the execution [as for any other shell command].

I think the problem is with your 'ex' content. HOW are you trying to edit your file - what's the goal here?

You could try similar sequence of command with 'vi' to iron out the details FIRST and then try it out on with the ex's herein-doc.

vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[PHV]

.s/$OLD_DATE_DATE/$NEW_DATE/
            ^^^^^

Typo ?

Hope This Help
PH.

 

[cp2000]

OK, Let me try again...One of these days my typing will impprove!!!
Yes, PHV, that is a typo. Unfortunately it's in the sumbission not the code.

THE BIG PICTURE
I am running a Bash shellscript on a RH8 system to backup a remote Solaris 8 system. The actual backup works fine. (tar over SSH). The final touch though is for the script to update the data file (dumpdates) on the remote system. I realize that the dumpdates file is used by the ufs* commands. They all a part of my backup process.

I am using a commandline script to feed the ex edit the information to edit the file. It works fine when I plug the values directly in. But when I try to pass variables to it the script goes no-op....

 

[PHV]

Are the variables exported ?

Hope This Help
PH.

 

[cp2000]

I didn't think they needed to be when they were using within the script. But I will try it...

 

[PHV]

So, post the script.

Hope This Help
PH.

 

[cp2000]

#!/bin/bash
# This script allows for backup of remote *UX machines
# It does,however, assume the remote machine has
# a RSA trust with this machine
# usage: backup 'remote host (FQN)' 'Remote directory to backup' 'Local directory copy to'
# Example: backup /usr /data

# check that the user is root

if [ $(id -un) != &quot;root&quot; ]; then
echo &quot;You need to be root to backup everything.&quot;
exit
fi

# Define variables
LOCALDIRECTORY=$3
REMOTEDIRECTORY=$2
REMOTELOGIN=root
REMOTEHOST=$1
REMOTEHOSTNAME=`echo $REMOTEHOST |gawk -F. '{print $1}'`
REMOTEDIRECTORYNAME=`echo $REMOTEDIRECTORY |gawk -F/ '{print $NF}'`
#TARFILENAME=&quot;$REMOTEDIRECTORYNAME-$(date +%Y%m%d).tar&quot;
TARFILENAME=&quot;$REMOTEDIRECTORYNAME.tar&quot;


# Run backup
echo &quot;Preparing to backup $1 to $2&quot;

rm -f $LOCALDIRECTORY/$REMOTEHOSTNAME/$TARFILENAME{,.gz}
ssh $REMOTELOGIN@$REMOTEHOST tar -cf - $REMOTEDIRECTORY |cat >$LOCALDIRECTORY/$REMOTEHOSTNAME/$TARFILENAME
echo &quot;...Done&quot;
rm $TEMPFILE

# Compress results
echo -n &quot;Compressing $LOCALDIRECTORY/$REMOTEHOSTNAME/$TARFILENAME&quot;
gzip $LOCALDIRECTORY/$REMOTEHOSTNAME/$TARFILENAME
echo &quot;...Done&quot;
date

exit 0

 

[PHV]

??
I'm confused: where are the ex problem in this script ?

Hope This Help
PH.

 

[cp2000]

Oooppps wrong script...
#!/bin/bash
# This script edits a file
# usage: myedit filename

# check that the user is root

if [ $(id -un) != &quot;root&quot; ]; then
echo &quot;You need to be root to backup everything.&quot;
exit
fi

# Define variables
FILENAME=&quot;dumpdates&quot;
RDSK=&quot;c0t2d0s5&quot;
RDSK=&quot;c0t2d0s0 0&quot;

# Get old Information
ALL_OLD=`awk -F&quot; &quot; &quot;/$RDSK/&quot;'{print $3,$4,$5,$6,$7}' dumpdates `;echo $ALL_OLD
#DAY_OLD=`awk -F&quot; &quot; &quot;/$RDSK/&quot;'{print $3}' dumpdates`;echo $DAY_OLD
#MONTH_OLD=`awk -F&quot; &quot; &quot;/$RDSK/&quot;'{print $4}' dumpdates`;echo $MONTH_OLD
#DATE_OLD=`awk -F&quot; &quot; &quot;/$RDSK/&quot;'{print $5}' dumpdates`;echo $DATE_OLD
#TIME_OLD=`awk -F&quot; &quot; &quot;/$RDSK/&quot;'{print $6}' dumpdates`;echo $TIME_OLD
#YEAR_OLD=`awk -F&quot; &quot; &quot;$RDSK/&quot;'{print $7}' dumpdates`;echo $YEAR_OLD

#Get New Date
MONTH_NEW=`date`

# check the variables
echo &quot;New date is $MONTH_NEW&quot;
echo &quot;Old date is $ALL_OLD&quot;

# Do actual edit
echo -n &quot;Preparing to edit $FILENAME &quot;
ex $FILENAME <<EOF
1
/c0t2d0s0*0
.s/$MONTH_NEW/$ALL_OLD/
wq
EOF

echo &quot;...Done&quot;


exit 0

 

[vgersh99]

ex $FILENAME <<EOF
/c0t2d0s0.*0/s/${MONTH_NEW}/${ALL_OLD}/
wq
EOF

vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[PHV]

Try this:

.s/$ALL_OLD/$MONTH_NEW/

Hope This Help
PH.

 

[cp2000]

Thanks...Not exactly right but close enough for me to get it to work.

/${RDSK}/s/${ALL_OLD}/${MONTH_NEW}/

Now on to the next step....try it on the remote system.

THANKS PEOPLES