31 lines
898 B
Bash
31 lines
898 B
Bash
state_set default-before "$(systemctl get-default)"
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cat /proc/sys/kernel/random/boot_id >"$LAB_STATE/setup-boot"
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mkdir -p /usr/local/lib/le-lab
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cat >/usr/local/lib/le-lab/watch.sh <<'X'
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#!/bin/bash
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# Notes each change of what snap prints, with the boot it happened in.
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log=$1 prev=''
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boot=$(cat /proc/sys/kernel/random/boot_id)
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snap() { echo "$(readlink -f /etc/systemd/system/default.target)"; }
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while :; do
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cur=$(snap)
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[ "$cur" = "$prev" ] || { printf '%s %s\n' "$boot" "$cur" >>"$log"; prev=$cur; }
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sleep 1
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done
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X
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cat >/etc/systemd/system/le-lab-watch.service <<X
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[Unit]
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Description=LINUXexpert practice lab: note the default target
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DefaultDependencies=no
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After=local-fs.target
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[Service]
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ExecStart=/bin/bash /usr/local/lib/le-lab/watch.sh $LAB_STATE/watch.log
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Restart=always
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[Install]
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WantedBy=multi-user.target
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X
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systemctl daemon-reload
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systemctl enable --now --quiet le-lab-watch.service
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