various ramblings

-- justin kelly

shell script to check if ExLibris Aleph is running OK

If you have to admin Aleph from ExLibris you may be wondering why there is minimal tools to help you make sure its all running ok

Below is a simple shell script that checks various 'ue_' process (PC server, publishing, etc..) and emails if they are down

Add this to your crontab to run each 15 minutes or so

Note:
- replace the email address with your email address
- replace LIB with your 3 character library code
- add/remove ue_ sections as you need

#!/bin/bash

SUBJECT='Aleph: alert'
TO='youremailaddress@you.com'

if [[ $ps =~ "ue_21_a_LIB30" ]]
then
        echo LIB30 ue_21 all OK
else
        message="LIB30 ue_21 is not running
"
fi

if [[ $ps =~ "ue_21_a_LIB01" ]]
then
        echo LIB01 ue_21 all OK
else
        message="${message}
LIB01 ue_21 is not running"
fi


if [[ $ps =~ "ue_08_a_LIB01" ]]
then
        echo LIB01 ue_08 all OK
else
        message="${message}
LIB01 ue_08 is not running"
fi

if [[ $ps =~ "ue_08_a_LIB10" ]]
then
        echo LIB10 ue_08  all OK
else
        message="${message}
LIB10 ue_08 is not running"
fi

if [[ $ps =~ "ue_06_a_LIB50" ]]
then
        echo LIB50 ue_06  all OK
else
        message="${message}
LIB50 ue_06 is not running"
fi

if [[ $ps =~ "-d_/exlibris/aleph/u20_1/alephe/apache" ]]
then
        echo Apache looks OK
else
        message="${message}
Apache doesn't look to be running"
fi

if [[ $ps =~ "-f_/exlibris/aleph/a20_1/aleph/proc/pc_server" ]]
then
        echo PC_Server looks  all OK
else
        message="${message}
PC_Server doen't look to be running"
fi

if [[ $ps =~ "-f_/exlibris/aleph/a20_1/aleph/proc/www_server" ]]
then
        echo www_server looks all OK
else
        message="${message}
wwww_server doens't look to be running"
fi

if [[ $ps =~ "-f_/exlibris/aleph/a20_1/aleph/proc/sip2_server" ]]
then
        echo SIP2 looks OK
else
        message="${message}
SIP2 doesn't look to be running"
fi

if [[ $ps =~ "-f_/exlibris/aleph/a20_1/aleph/proc/oclc_server" ]]
then
        echo OCLC server looks OK
else
        message="${message}
OCLC server doesn't look to be running"
fi

if [[ $ps =~ "-f_/exlibris/aleph/a20_1/aleph/proc/ncip_server" ]]
then
        echo NCIP server looks OK
else
        message="${message}
NCIP server doesn't look to be running"
fi

if [[ $ps =~ "-f_/exlibris/aleph/a20_1/aleph/proc/sru_server" ]]
then
        echo SRU server looks OK
else
        message="${message}
SRU server doesn't look to be running"
fi

if [[ $ps =~ "-f_/exlibris/aleph/a20_1/aleph/proc/z39_server" ]]
then
        echo Z39 server looks OK
else
        message="${message}
Z39 server doesn't look to be running"
fi

if [[ $ps =~ "ue_01_a_LIB01.a20_1" ]]
then
        echo LIB01 indexing looks OK
else
        message="${message}
LIB01 indexing doesn't look to be running"
fi

if [[ $ps =~ "ue_01_a_LIB10.a20_1" ]]
then
        echo LIB10 indexing looks OK
else
        message="${message}
LIB10 indexing doesn't look to be running"
fi

if [[ $ps =~ "ue_01_a_LIB30.a20_1" ]]
then
        echo LIB30 indexing looks OK
else
        message="${message}
LIB30 indexing doesn't look to be running"
fi

if [[ -n $message ]]
then
        echo $message
        /bin/mail -s "$SUBJECT" "$TO" <<EOM
        $message
EOM
else
        echo "No email needs to be sent - all working OK"
fi

simple bash regex example

since versions 3 bash has included a simple regular expression operation "=~"
below is a simple example of it in action

######### example code #########
#search for a process and print specific section
ps=`ps aux | grep stuff | awk '{print $12 "_" $13}' `
...
#do some stuff
if [[ $ps =~ "something im looking for" ]]; then
       #do what you want
fi
##############################

simple gpg password protected file encryption example

Creating the file:

vi passwords.txt

Encrypt the file:

gpg -c -a passwords.txt

and enter a password when prompted

now delete the original plain text file

rm passwords.txt

Viewing the file:

to view the file with less
gpg -d passwords.txt.asc | less

and enter the password when prompted

Editing the file:

To edit the password file decrypt the file to plain txt
gpg passwords.txt.asc

this will place a plain text file call passwords.txt in the current directory