Re: 20050420: LDM scour issue and computer lock-up

Gabe,

>Date: Wed, 20 Apr 2005 16:31:29 -0400 (EDT)
>From: Gabe Langbauer <address@hidden>
>Organization: Ohio State University
>To: Steve Emmerson <address@hidden>
>Subject: Re: 20050420: LDM scour issue and computer lock-up 
>Keywords: 200504191903.j3JJ3u4n010376

The above message contained the following:

> >     dayOffsetName=scour_test
> >     touch /tmp/$dayOffsetName
> >     sleep 2
> >     cd /tmp
> >     if find . \! -name . -prune -mtime 0 -name $dayOffsetName | grep 
> > $dayOffsetName >/dev/null; then
> >         echo DAY_OFFSET=1
> >     elif find . \! -name . -prune -mtime 1 -name $dayOffsetName | grep 
> > $dayOffsetName >/dev/null; then
> >         echo DAY_OFFSET=0
> >     else
> >         echo "Couldn't discover meaning of '-mtime' argument of find(1)"
> >         exit 1
> >     fi
> The answer is:
> DAY_OFFSET=1

Hmm...  The significant modifications in the above script are the
name of the test-file and the elimination of continuation lines.

What does this script do?

    dayOffsetName=scour_$$
    touch /tmp/$dayOffsetName
    sleep 2
    cd /tmp
    if find . \! -name . -prune -mtime 0 -name $dayOffsetName | grep 
$dayOffsetName >/dev/null; then
        echo DAY_OFFSET=1
    elif find . \! -name . -prune -mtime 1 -name $dayOffsetName | grep 
$dayOffsetName >/dev/null; then
        echo DAY_OFFSET=0
    else
        echo "Couldn't discover meaning of '-mtime' argument of find(1)"
        exit 1
    fi

and this script:

    dayOffsetName=scour_$$
    touch /tmp/$dayOffsetName
    sleep 2
    cd /tmp
    if find . \! -name . -prune -mtime 0 -name $dayOffsetName |
            grep $dayOffsetName >/dev/null; then
        echo DAY_OFFSET=1
    elif find . \! -name . -prune -mtime 1 -name $dayOffsetName |
            grep $dayOffsetName >/dev/null; then
        echo DAY_OFFSET=0
    else
        echo "Couldn't discover meaning of '-mtime' argument of find(1)"
        exit 1
    fi

Regards,
Steve Emmerson