In /usr/bin/dpigs line 91:
    grep-status -nsInstalled-size,Package -F Status ' installed' $STATUS \
                                                                 ^-----^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
    grep-status -nsInstalled-size,Package -F Status ' installed' "$STATUS" \


In /usr/bin/dpigs line 94:
        | head --lines=$LINES
                       ^----^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
        | head --lines="$LINES"


In /usr/bin/dpigs line 97:
    grep-status -nsInstalled-size,Source:Package -F Status ' installed' $STATUS \
                                                                        ^-----^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
    grep-status -nsInstalled-size,Source:Package -F Status ' installed' "$STATUS" \


In /usr/bin/dpigs line 100:
        | head --lines=$LINES
                       ^----^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
        | head --lines="$LINES"

For more information:
  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...