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16.4.4. Shell Scripting with guestfish
Once you are familiar with using guestfish interactively, according to your needs, writing shell scripts with it may be useful. The following is a simple shell script to add a new MOTD (message of the day) to a guest:
#!/bin/bash - set -e guestname="$1" guestfish -d "$guestname" -i <<'EOF' write /etc/motd "Welcome to Acme Incorporated." chmod 0644 /etc/motd EOF
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