+ attendance=()
+ for att in attendance attendance{0..100}; do
+ [ -n "${_POST[$att]}" ] && attendance+=("${_POST[$att]}")
+ done
+ sed -rn 's:^'$course'\t(.+)$:\1:p' "$attfile" |while read card; do
+ touch "$_DATA/vcard/$card"
+ done
+ sed -i -r '/^'$course'\t(.+)$/d' "$attfile"
+ for each in $attendance; do
+ echo "$course\t$each"
+ done >>"$attfile"
+ sed -rn 's:^'$course'\t(.+)$:\1:p' "$attfile" |while read card; do
+ touch "$_DATA/vcard/$card"
+ done
+