If $USER is not set when running checkupdates, the temporary directory's name will be "checkup-db-". This will cause issues if multiple users run checkupdates. A common situation where $USER is not set is when a command is executed with systemd-run, e.g. from a systemd unit. See https://github.com/systemd/systemd/pull/8227 for details. Replace the usage of $USER with $UID since it is guaranteed to exist and so that the temporary directory is isolated per-user. Signed-off-by: nl6720 <nl6720@gmail.com> --- src/checkupdates.sh.in | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/checkupdates.sh.in b/src/checkupdates.sh.in index 52f8899..ba9b960 100644 --- a/src/checkupdates.sh.in +++ b/src/checkupdates.sh.in @@ -85,7 +85,7 @@ if ! type -P fakeroot >/dev/null; then fi if [[ -z $CHECKUPDATES_DB ]]; then - CHECKUPDATES_DB="${TMPDIR:-/tmp}/checkup-db-${USER}/" + CHECKUPDATES_DB="${TMPDIR:-/tmp}/checkup-db-${UID}/" fi trap 'rm -f $CHECKUPDATES_DB/db.lck' INT TERM EXIT -- 2.24.0