36 lines
1.1 KiB
Bash
36 lines
1.1 KiB
Bash
for u in svcbak carol; do
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id "$u" >/dev/null 2>&1 && refuse "user $u already exists; remove it and start again"
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done
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getent passwd 2001 >/dev/null && refuse "UID 2001 is already in use"
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getent group 2001 >/dev/null && refuse "GID 2001 is already in use"
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for d in /home/svcbak /home/carol /home/carol2; do
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[ -e "$d" ] && refuse "$d already exists; remove it and start again"
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done
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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.
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log=$1 prev=''
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snap() {
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echo "$(grep -E '^(svcbak|carol):' /etc/passwd | tr '\n' '|') carol2=$(ls -A /home/carol2 2>/dev/null | tr '\n' ,)"
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}
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while :; do
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cur=$(snap)
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[ "$cur" = "$prev" ] || { printf '%s\n' "$cur" >>"$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 lab users
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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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