MondoRescue HOWTO: Utilisation and Configuration of Mondo and Mindi under Linux (Version 2.2.2-rRRR)
| Chapter 7. HOWTO run mondo interactively using cron |

# 7.5. The Solution

## 7.5.1. Briefly

- Use 'at' to run your usual mondoarchive command

- Grab the script generated by 'at' and make a copy of it

- Edit that script to use 'screen -m -d <your mondoarchive command>'

- Run that script from your crontab

- Use 'screen -r' to attach to the mondo screen to change CDs

- Use '<CTRL>-a d' to detach the screen again

## 7.5.2. In Detail

### 7.5.2.1. at

Use the 'at' command to submit your usual mondoarchive command. My mondoarchive command is:

# mondoarchive -D -Ow 10 -S /home/mondo/ -T /home/mondo/ -g \ -E "\"/home/cdaly/GIS/W2K /home/mondo/\"" -9

To submit the mondoarchive command with 'at' do:

# at now + 5 min mondoarchive -D -Ow 10 -S /home/mondo/ -T /home/mondo/ -g \ -E "\"/home/cdaly/GIS/W2K /home/mondo/\"" -9 <CTRL>-d

This generates a script in /var/spool/at/ which sets up your environment and runs your command. Grab this script to become your cron job.

### 7.5.2.2. Grab the 'at' script

Make a copy of the script generated by the 'at' command to use as the basis for your cron job.

grep mondo /var/spool/at/*
cp /var/spool/at/<file-from-grep> /root/mondo-cronscript

You'll need to edit this.

### 7.5.2.3. Edit mondo-cronscript

To use screen, you'll need to edit the cronscript and add the screen command. My mondo-cronscript looks like:

    #!/bin/sh
    # atrun uid=0 gid=0
    # mail    cdaly 0 umask 22
    PWD=/root; export PWD
    XAUTHORITY=/root/.xauthyOrD4f; export XAUTHORITY
    HOSTNAME=bofh.irmet.ie; export HOSTNAME
    PVM_RSH=/usr/bin/rsh; export PVM_RSH
    QTDIR=/usr/lib/qt-2.3.1; export QTDIR
    LESSOPEN=\|/usr/bin/lesspipe.sh\ %s; export LESSOPEN
    XPVM_ROOT=/usr/share/pvm3/xpvm; export XPVM_ROOT
    KDEDIR=/usr; export KDEDIR
    USER=root; export USER
    LS_COLORS=no=00:fi=00:di=01\;34:ln=01\;36:pi=40\;33:so=01\;35:bd=40\;33\;01:cd=40\;33\;01:or=01\;05\;37\;41:mi=01\;05\;37\;41:ex=01\;32:\*.cmd=01\;32:\*.exe=01\;32:\*.com=01\;32:\*.btm=01\;32:\*.bat=01\;32:\*.sh=01\;32:\*.csh=01\;32:\*.tar=01\;31:\*.tgz=01\;31:\*.arj=01\;31:\*.taz=01\;31:\*.lzh=01\;31:\*.zip=01\;31:\*.z=01\;31:\*.Z=01\;31:\*.gz=01\;31:\*.bz2=01\;31:\*.bz=01\;31:\*.tz=01\;31:\*.rpm=01\;31:\*.cpio=01\;31:\*.jpg=01\;35:\*.gif=01\;35:\*.bmp=01\;35:\*.xbm=01\;35:\*.xpm=01\;35:\*.png=01\;35:\*.tif=01\;35:; export LS_COLORS
    MACHTYPE=i386-redhat-linux-gnu; export MACHTYPE
    MAIL=/var/spool/mail/root; export MAIL
    INPUTRC=/etc/inputrc; export INPUTRC
    BASH_ENV=/root/.bashrc; export BASH_ENV
    LANG=en_US; export LANG
    LOGNAME=root; export LOGNAME
    SHLVL=1; export SHLVL
    II_SYSTEM=/usr/local/ingres; export II_SYSTEM
    USERNAME=root; export USERNAME
    HOSTTYPE=i386; export HOSTTYPE
    OSTYPE=linux-gnu; export OSTYPE
    HISTSIZE=1000; export HISTSIZE
    LAMHELPFILE=/etc/lam/lam-helpfile; export LAMHELPFILE
    PVM_ROOT=/usr/share/pvm3; export PVM_ROOT
    HOME=/root; export HOME
    SSH_ASKPASS=/usr/libexec/openssh/gnome-ssh-askpass;
    export SSH_ASKPASS
    PATH=/usr/local/ingres/ingres/bin:/usr/local/ingres/ingres/utility:/usr/kerberos/sbin:/usr/kerberos/bin:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/usr/bin/X11:/usr/X11R6/bin:/root/bin; export PATH
    cd /root || {
    echo 'Execution directory inaccessible' >&2
    exit 1
    }
    screen -m -d mondoarchive -D -Ow 10 -S /home/mondo/ \
    -T /home/mondo/ -g -E "\"/home/cdaly/GIS/W2K /home/mondo/\"" -9
    #done

The crucial line is this one:

screen -m -d mondoarchive -D -Ow 10 -S /home/mondo/ -T /home/mondo/ -g -E "\"/home/cdaly/GIS/W2K /home/mondo/\"" -9

This uses 'screen -m -d' to "-m -d Start screen in "detached" mode. This creates a new session but doesn't attach to it. This is useful for system startup scripts. (From 'man screen')"

When screen starts, it will be in the background and "detached".

### 7.5.2.4. Run the thing with cron

To get the whole thing running, do:

crontab -e

and add the following lines:

# run mondoarchive at 23:59 weekdays
59 23 * * 1-5 /root/mondo-cronscript

Your mondoarchive job will run at 23:59 monday-friday.

DON'T FORGET TO CHANGE TAPES!

### 7.5.2.5. Getting at it...

Once your cron job is running regularly, you'll want to get to it to change tapes and check status etc.

screen -r

attaches to the running screen where you can change CDs etc

<CTRL>-a d

detaches the running screen again.

### 7.5.2.6. Caveat

The script generated by 'at' is unique to the user/machine combination. You MUST regenerate it on each machine where it will be used. Using the one above will NOT work for you. MAKE YOUR OWN!

The Problem |  | Compare