I have a PERL command line embedded in a UNIX script. The script doesn't handle errors coming out of this command. I'm processing large files and occassionally I run out of disk space and end up with half a file.
How do I handle errors coming out of this type of command?
Last edited by radoulov; 08-31-2011 at 11:05 AM..
Reason: Code tags.
Guys,
I'm doing signal handling in Perl. I'm trying to catch ^C signal inside the script.
There two scripts : one shell script and one perl script.
The shell script calls the perl script.
For e.g. shell script a.sh and perl scipt sig.pl.
Shell script a.sh looks something like this :... (6 Replies)
Hi there,
I'm newby in perl and XML. I can read and parse Xml with XML-Node upper XML::Parser, but how can I create XML tags and pack my individual data in it then send through socket. PLZ lead me :)
Thanks in Advance. (1 Reply)
Hi,
Here is my piece of code--
sub per_user_qna_detail
{
for($index=0;$index<@records;$index++)
{
if($records =~ m/^(.*)\s*Morocco.*Entering\s*Module::authenticate/)
{
printf "INSIDE per_user_qna_detail on LINE NO $index\n";
$Time_Stamp = $1;... (0 Replies)
Hello all,
I have created a Perl script that tries to open connections to various systems on different ports in order to see if the machines are reachable, the ports are open, etc.
There appears to be a difference between Solaris (10) and Linux (RH/Oracle and Ubuntu) in the status or error it... (4 Replies)
Hi All,
I'm pretty new to the forum and also to UNIX. I have a requirement for which I need some help. I have a script (example.script) where I get user inputs using the read command. I would need to pass the read-fetched input to a perl command (explained below) in my script. The part which... (3 Replies)
I can get this working, but if something is down I get an error and the script does not move on. I can not get the "else" function working. What might I be doing wrong?
use SNMP::Simple
my %ios = ();
$list="list.list";
open(DAT, $list) || die("Can't Open List");
@raw_data=<DAT>;... (4 Replies)
$# some text
$$ some text
$@ some text
$$. some text
Mg1 some text
Mg2 some text
.
.
.
Mg10 some text
The above 10 lines are to be extracted except the lines starting from $#,$$.,... (4 Replies)
Hi
Am making connection to oracle using ISQL as shown in the code.
This code is just a minor part of a big code.
I want to capture the error if the password/login is wrong or if connection is not made.
I need to capture the error code also.
Also, If such an error occurs, i need to exit out... (4 Replies)
Hi,
I am reading and file and writting each word to other file.
where I have used array to store the data.
I am getting below error as
"Use of uninitialized value in concatenation (.) or string at customize_split_raw.pl line 51, <IN_FILE> "
Where my line 51 code is
50 foreach... (8 Replies)
Hi,
I have a perl script which is just reading from the file but what I would like to understand is how the counter is moving without using the loop in the script.
Below are the details:
$ more /tmp/abc.txt
This is 0
This is 1
This is 2
This is 3
This is 4
This is 5
This is 6
This... (2 Replies)
Discussion started by: siddharthjindal
2 Replies
LEARN ABOUT OPENDARWIN
catch
catch(n) Tcl Built-In Commands catch(n)
__________________________________________________________________________________________________________________________________________________NAME
catch - Evaluate script and trap exceptional returns
SYNOPSIS
catch script ?varName?
_________________________________________________________________DESCRIPTION
The catch command may be used to prevent errors from aborting command interpretation. Catch calls the Tcl interpreter recursively to exe-
cute script, and always returns without raising an error, regardless of any errors that might occur while executing script.
If script raises an error, catch will return a non-zero integer value corresponding to one of the exceptional return codes (see tcl.h for
the definitions of code values). If the varName argument is given, then the variable it names is set to the error message from interpret-
ing script.
If script does not raise an error, catch will return 0 (TCL_OK) and set the variable to the value returned from script.
Note that catch catches all exceptions, including those generated by break and continue as well as errors. The only errors that are not
caught are syntax errors found when the script is compiled. This is because the catch command only catches errors during runtime. When
the catch statement is compiled, the script is compiled as well and any syntax errors will generate a Tcl error.
EXAMPLES
The catch command may be used in an if to branch based on the success of a script.
if { [catch {open $someFile w} fid] } {
puts stderr "Could not open $someFile for writing
$fid"
exit 1
}
The catch command will not catch compiled syntax errors. The first time proc foo is called, the body will be compiled and a Tcl error will
be generated.
proc foo {} {
catch {expr {1 +- }}
}
SEE ALSO
error(n), break(n), continue(n)
KEYWORDS
catch, error
Tcl 8.0 catch(n)