/etc/X11/Xsession.d/05debian-edu-truncate-xerrorlog is in debian-edu-config 1.702.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | # This is a -*- shell-script -*- fragment called by /etc/X11/Xsession
trim=true
trimlimit=1048576
if [ true = "$trim" ] ; then
size=$(stat -c%s "$HOME/.xsession-errors")
if [ "$size" -ge $trimlimit ] ; then
# Only trim on each login for now, to see if that is enough.
cat > "$HOME/.xsession-errors" <<EOF
info: Truncated this file because it was more than $trimlimit bytes
EOF
fi
else
# Redirect all errors to /dev/null instead of $ERRFILE
# (~/.xsession-errors by default), to avoid filling up users home
# directory with error messages. Allow the user to disable this by
# creating ~/.xsession-errors-enable
if [ ! -f "$HOME/.xsession-errors-enable" ] ; then
# Report the change to the log file before disabling output to the file
echo "info: Redirecting xsession messages to /dev/null."
echo "info: touch '$HOME/.xsession-errors-enable' to disable this."
exec >> /dev/null 2>&1
fi
fi
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