[SOLVED] Expect script

edwardcode · 08-19-2011, 12:34 PM

I am writing an expect backup script to log in to a lot of systems and run a large tar command and send it to the backupserver. the problem is I am getting this error:

Code:

extra characters after close-quote
    while executing
 "send "sudo tar -zcvf - /dir/dir/dir..."

I am totaly stuck and I have no idea how to fix this.

Below you will find my script I am writing that is getting this error. Assume that all of the variables are correct.

Code:

#!/bin/bash
for server in ${servers}; do
   /usr/bin/expect  << EOF
        spawn ssh -t ${username}@${server}
        expect "*?assword: "
        send "${PASSWD}\n"
        expect "*]$ "
        send "sudo su -\n"
        expect "*?assword*${username}: "
        send "$( echo -n "$PASSWD" | od -An -vtx1 | tr -d '\n' | sed 's/ /\\x/g' )\n"
        expect "*]# "
        send "sudo tar -zcvf - $(find /long/list/of/diffrent/directories/and/files -mtime -90 -mtime +1 -type f) | ssh -t $username@$backupserver "cat > /backup/directory/$(hostname -s)/$(hostname -s)_$(date +%Y%m%d).tgz""
        send "\n"
        expect { "*(yes/no)? " { send "yes\n" } "*?assword*${username}: " { send "$( echo -n "$PASSWD" | od -An -vtx1 | tr -d '\n' | sed 's/ /\\x/g' )\n" } }
        send "\r"
        expect "*]# "

EOF
done

ta0kira · 08-19-2011, 01:08 PM

Quote:

Originally Posted by edwardcode

I am writing an expect backup script to log in to a lot of systems and run a large tar command and send it to the backupserver. the problem is I am getting this error:

Code:

extra characters after close-quote
    while executing
 "send "sudo tar -zcvf - /dir/dir/dir..."

I am totaly stuck and I have no idea how to fix this.

Below you will find my script I am writing that is getting this error. Assume that all of the variables are correct.

Code:

#!/bin/bash
for server in ${servers}; do
   /usr/bin/expect  << EOF
        spawn ssh -t ${username}@${server}
        expect "*?assword: "
        send "${PASSWD}\n"
        expect "*]$ "
        send "sudo su -\n"
        expect "*?assword*${username}: "
        send "$( echo -n "$PASSWD" | od -An -vtx1 | tr -d '\n' | sed 's/ /\\x/g' )\n"
        expect "*]# "
        send "sudo tar -zcvf - $(find /long/list/of/diffrent/directories/and/files -mtime -90 -mtime +1 -type f) | ssh -t $username@$backupserver "cat > /backup/directory/$(hostname -s)/$(hostname -s)_$(date +%Y%m%d).tgz""
        send "\n"
        expect { "*(yes/no)? " { send "yes\n" } "*?assword*${username}: " { send "$( echo -n "$PASSWD" | od -An -vtx1 | tr -d '\n' | sed 's/ /\\x/g' )\n" } }
        send "\r"
        expect "*]# "

EOF
done

You need to escape the nested ", or use ':

Code:

send "sudo tar -zcvf - $(find /long/list/of/diffrent/directories/and/files -mtime -90 -mtime +1 -type f) | ssh -t $username@$backupserver \"cat > /backup/directory/$(hostname -s)/$(hostname -s)_$(date +%Y%m%d).tgz\""

You should use public-key authentication with ssh instead of expect. It will allow you to log in non-interactively, which will let you pass the commands directly.
Kevin Barry

edwardcode · 08-19-2011, 01:33 PM

Thanks. That did bring an other problem up though. When I ran the script it showed me this output(found below). One of the problems is it looks like it is trying to run each directory found by the "find" portion of the tar command, as its own command. I have no idea why? I have run the tar command as its own script an it works fine but when I put it in this script it craps out on me.

Code:

[root@hostname ~]# sudo tar -zcvf - /one/of/the/directories/or/files
tar: Removing leading `/' from member names
/var/log/httpd/error_log
Â¥NÃ¨ÂÂÃÃÂ}í§ÃIkÃJÂª^ÂÃB
af#m$ÂÂµ+Ã¶Ã*ÃÃÂ¤$lÇ Â¸Â´Ãw#Â¤Ã½Ã¿ÃAÂ«5ÃÃ¾JÃ¥~amÂÂ
 ÂKeÃT,Â*RÙ²ÃÃBÃnÂ´à¶9\ÂÆÃ¸vÃ¥Â¬Ã
Ü
Ã°ÂÂoÂ¡Ã*Ã                                                                                                                                                                                                                                  \Ã*2ÂhÃ>Â´Â¾ÂoÃÃ×Æ´ÂµZfÂ¥Â©UzÂ¾Â*jÃ¨Â¤5Â©yHÂ|,sÂ§qÂ£ÂÂÂ*Â
qUÂ£+ÂÂ®Ã¸
T-4fÂ§Â¤ÃÃ¯ÂxÒÂÂ±$ÂÂpÃ´Â¢Ã~%
                            Ã_Â¯Â
FÂF9Â)ÃÞ¬J!Â*ÃÃè¢±3eÃÃ±Â²MÃÃ¢ÂÃ³_(Ðº]ZÂ£Â Ã¶3Â}Ã»Ã²ÃµÃ¾Ú¥Â¢\ÂÃÂX+ÂªÂºÃ*ÂUM28ÃÃ¶ÂVxÂÂÃ¶Ã´=ÃÃZÂ½;ÃºZÃ³SÂ°ÃeO3Ã¥./lSÃªÂ»ÛÃ
                                         Â                                                                             0Â
kÃÃN
Â³Ã¯Â¥tX+Âµ*ÃV"Ã»
                                                                                                ;hÃµÂ*Ã±ÃÃ¾AAAAAAAÃ
                                 ÃÃÂ§HOÃ©ÃÃ¿Ã¸ÂªnÃ1Â¯Â«Â³ÂLÃÃ#Ã³ÂVÃ¿CÂ*pOÂÃ/cxpÂ°tÃ¾,ÂµÃYjÃÃÃ·dÂ                  ÃoÃ¿ÃdS([root@hostname ~]#
[root@hostname ~]# /var/log/audit/audit.log.3
PuTTY-bash: /var/log/audit/audit.log.3: No such file or directory
PuTTY[root@hostname ~]# /var/log/audit/audit.log.1
-bash: /var/log/audit/audit.log.1: No such file or directory
[root@hostname ~]# /var/log/audit/audit.log.2
-bash: /var/log/audit/audit.log.2: No such file or directory
[root@hostname ~]# /var/log/audit/audit.log.4
-bash: /var/log/audit/audit.log.4: No such file or directory

This is the out put it should have

Code:

 sudo tar -zcvf - /var/log/audit/audit.log.3 /var/log/audit/audit.log.4 /var/log/audit/audit.log.2
tar: Removing leading `/' from member names
/list/a/lot/of/files
then ssh to the backup server for "tar"ing

ta0kira · 08-19-2011, 02:03 PM

Quote:

Originally Posted by edwardcode

Thanks. That did bring an other problem up though. When I ran the script it showed me this output(found below). One of the problems is it looks like it is trying to run each directory found by the "find" portion of the tar command, as its own command. I have no idea why? I have run the tar command as its own script an it works fine but when I put it in this script it craps out on me.

I still think you should use passwordless ssh login to avoid having to use expect. Regardless, what happens if you change this:

Code:

sudo tar -zcvf - $(find /long/list/of/diffrent/directories/and/files -mtime -90 -mtime +1 -type f)

to this:

Code:

find /long/list/of/diffrent/directories/and/files -mtime -90 -mtime +1 -type f | sudo tar -zcvf - -T -

Kevin Barry

edwardcode · 08-24-2011, 11:23 AM

I figured out what was causing the error. you need to escape a lot of characters. see below

Code:

send "sudo tar -zcvf - `$`(find /long/list/of/diffrent/directories/and/files -mtime -90 -mtime +1 -type f\) | ssh -t $username@$backupserver \"cat > /backup/directory/\`hostname -s\`/\`hostname -s\`_\$(\date +%Y%m%d\).tgz\""