check, rcheck: Propagate exit status better; capture lines more precisely.

[rcheck] / check

#! /bin/sh
###
### Run a collection of everyday health checks.

set -e

exec 4>&1
rc=0
for check in check.d/[!#]*[!~]; do
  nrc=$(
    exec 5>&1
    { { { set +e; "$check"; rc=$?; set -e
	  echo $rc >&5
	  case $rc in 0) ;; *) echo >&2 "failed (rc = $rc)" ;; esac
      } >&3; } 2>&1 |
      sed 's/^/E: /'
    } 3>&1 | {
      if IFS= read -r line; then
	echo "## ${check##*/}"
	echo "$line"
	cat
	echo
      fi
    } >&4
  )
  if [ $nrc -gt $rc ]; then rc=$nrc; fi
done

exit $rc