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Perl Interpretation Help

Would someone tell me what these perl lines are doing.  There is a query called standby_check.sh being executed.  If i execute it standalone, i get rows returned, but for some reason it seems here it comes back empty.


open(DBQ, "/var/sysadm/oracle/bin/standby_check.sh|")
  or die("Failed to run standby_check.sh\n!$\n");

while (<DBQ>) {
  if (/^(.+?\.arc)\s*$/) {
    $fileName = $1;
0
xoxomos
Asked:
xoxomos
1 Solution
 
wilcoxonCommented:
# run /var/sysadm/oracle/bin/standby_check.sh and pipe the output to the DBQ filehandle
open(DBQ, "/var/sysadm/oracle/bin/standby_check.sh|")
  or die("Failed to run standby_check.sh\n!$\n");

# loop over lines from the output referenced by DBQ
while (<DBQ>) {
  # if the line ends with .arc
  if (/^(.+?\.arc)\s*$/) {
    # then assign the line (minus any trailing whitespace) to the variable $fileName
    $fileName = $1;

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xoxomosAuthor Commented:
Thanx

The standby_check.sh returns:
.....
.....
.
.
.
.
/archlog2/BB60/1_291803_786457154.arc
/archlog2/BB60/1_291804_786457154.arc
/archlog2/BB60/1_291805_786457154.arc
/archlog2/BB60/1_291806_786457154.arc
/archlog2/BB60/1_291807_786457154.arc
/archlog2/BB60/1_291808_786457154.arc
/archlog2/BB60/1_291809_786457154.arc
/archlog2/BB60/1_291810_786457154.arc
/archlog2/BB60/1_291811_786457154.arc
/archlog2/BB60/1_291812_786457154.arc

92 rows selected.
What are some possible reasons perl dies at the open or die stage
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TintinCommented:
What are some possible reasons perl dies at the open or die stage

1.  The script doesn't exist
2.  The script doesn't have execute permission
3.  The Perl script doesn't have sufficient privilege to run the script
4.  The script exits with a non-zero status.
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xoxomosAuthor Commented:
Never mind.  I was root then did a crontab oracle.cron and got things mucked up.
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ozoCommented:
die("Failed to run standby_check.sh\n$!\n");
instead of
die("Failed to run standby_check.sh\n!$\n");
may give some indication of possible reasons
0
 
xoxomosAuthor Commented:
OZO!!!!  Long time :-)
0

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