PPA Launchpad smart feature#156
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1. Availability check – CHECK_LAUNCHPAD
bash
function CHECK_LAUNCHPAD {
if curl -4 -s --max-time 8 --connect-timeout 5 --head --fail \
"https://ppa.launchpad.net" >/dev/null 2>&1; then
return 0
fi
return 1
}
It verifies whether ppa.launchpad.net is reachable before attempting apt update.
2. Disable / Restore functions
DISABLE_LAUNCHPAD_SOURCES – Finds all .list and .sources files in /etc/apt/sources.list.d that reference ppa.launchpad.net and renames them to *.ucare_disabled. It also comments out any ppa.launchpad.net lines in /etc/apt/sources.list with a marker.
RESTORE_LAUNCHPAD_SOURCES – Reverses both operations, restoring the original files and commenting.
3. Usage in the maintenance flow
Inside the MAINTENANCE function:
bash
echo -e "${YELLOW} • Checking ppa.launchpad.net availability...${ENDCOLOR}"
if ! CHECK_LAUNCHPAD; then
echo -e "${YELLOW}⚠ ppa.launchpad.net appears to be unreachable ...${ENDCOLOR}"
DISABLE_LAUNCHPAD_SOURCES
_UCARE_PPA_EXCLUDED=1
else
echo -e "${CYAN} ✓ ppa.launchpad.net is reachable ...${ENDCOLOR}"
fi
# ... then apt update runs ...
# After the update, sources are restored unconditionally:
if [ "$_UCARE_PPA_EXCLUDED" -eq 1 ]; then
echo -e "${GREEN}▸ Restoring temporarily disabled PPA sources${ENDCOLOR}"
RESTORE_LAUNCHPAD_SOURCES
echo -e "${YELLOW}⚠ Note: PPA packages were not updated this run.${ENDCOLOR}"
fi
Therefore, the script fully validates and implements a “skip/disable Launchpad PPA when unreachable” mechanism, and automatically restores them after the update run.
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Availability check – CHECK_LAUNCHPAD bash
function CHECK_LAUNCHPAD {
if curl -4 -s --max-time 8 --connect-timeout 5 --head --fail
"https://ppa.launchpad.net" >/dev/null 2>&1; then
return 0
fi
return 1
}
It verifies whether ppa.launchpad.net is reachable before attempting apt update.
Disable / Restore functions DISABLE_LAUNCHPAD_SOURCES – Finds all .list and .sources files in /etc/apt/sources.list.d that reference ppa.launchpad.net and renames them to *.ucare_disabled. It also comments out any ppa.launchpad.net lines in /etc/apt/sources.list with a marker.
RESTORE_LAUNCHPAD_SOURCES – Reverses both operations, restoring the original files and commenting.
bash
echo -e "${YELLOW} • Checking ppa.launchpad.net availability...${ENDCOLOR}" if ! CHECK_LAUNCHPAD; then
echo -e "${YELLOW}⚠ ppa.launchpad.net appears to be unreachable ...${ENDCOLOR}"
DISABLE_LAUNCHPAD_SOURCES
_UCARE_PPA_EXCLUDED=1
else
echo -e "${CYAN} ✓ ppa.launchpad.net is reachable ...${ENDCOLOR}"
fi
... then apt update runs ...
After the update, sources are restored unconditionally: if [ "$_UCARE_PPA_EXCLUDED" -eq 1 ]; then
fi
Therefore, the script fully validates and implements a “skip/disable Launchpad PPA when unreachable” mechanism, and automatically restores them after the update run.