12-12-2011
As always, I'm thankful for you answer
10 More Discussions You Might Find Interesting
1. Programming
hi there,
i was reading about the exec() function. and if i m not wrong, exec() kills your present process and starts a new process in its place. the process id remains the same.
then it says if exec is successful the text data and stack are overlayed by new file! -
i dont get this part "only... (2 Replies)
Discussion started by: a25khan
2 Replies
2. UNIX for Advanced & Expert Users
Hi,
Ho do I differentiate system call from library call?
for example if I am using chmod , how do I find out if it is a system call or library call?
Thanks
Muru (2 Replies)
Discussion started by: muru
2 Replies
3. Programming
Hi ,
Can anybody name any System Function in C/C++ for Sun-Solaris (unix) platform which can serve the alternative of execl() system function.
Actually I am calling a fork-execl() pair and then making an interprocess communication between these two(parent-child process). But the problem is... (3 Replies)
Discussion started by: Raj Kumar Arora
3 Replies
4. UNIX for Advanced & Expert Users
I would like to call a particular function in a C program using execl(). Is this possible using execl or anyother function ?
Thanks (2 Replies)
Discussion started by: vpraveen84
2 Replies
5. Shell Programming and Scripting
Hi All,
I want to execute a piped command like 'ls /opt | grep xml' using array as parameters list. How can I do that? (2 Replies)
Discussion started by: bharadiaam
2 Replies
6. Shell Programming and Scripting
Hi,
How to write a system calls in a script ?
> cd $HOME
> ls -ltr
thanks in advance.. (10 Replies)
Discussion started by: hegdeshashi
10 Replies
7. Shell Programming and Scripting
I am new in Perl.
I am working in simple script and the varibles are working well outside the exec or system command.
but they don't work as parameters to exec or system command.
The script is attached.
please help. (8 Replies)
Discussion started by: ahmed_zaher
8 Replies
8. UNIX for Dummies Questions & Answers
Hi,
I have to run two commands one after another from a c program. How can i do this with exec system calls. i tried giving them as argument to execv but it is not working.please help
thanks (3 Replies)
Discussion started by: suryashikha
3 Replies
9. Programming
I have a cgi script which is called after certain time interval, which has this:
system ("ls -l /tmp/cgic* | grep -v \"cgicsave.env\" | awk '{print $5}'");
During the execution of this script,the output is 0 sometimes. But due to this the system call is not working at all and doesnt o/p... (2 Replies)
Discussion started by: xs2punit
2 Replies
10. Programming
hi everyone
i wrote a system call and compiled the kernel succesfully...
my system call is in a file in the kernel folder named my_syscall1.c (kernel/my_syscall1.c)
the header file for this system call i added it in the folder include like this include/my_syscall1/my_syscall1.h
my problem is... (2 Replies)
Discussion started by: demis87
2 Replies
LEARN ABOUT FREEBSD
unbound
unbound(8) unbound 1.5.1 unbound(8)
NAME
unbound - Unbound DNS validating resolver 1.5.1.
SYNOPSIS
unbound [-h] [-d] [-v] [-c cfgfile]
DESCRIPTION
Unbound is a caching DNS resolver.
It uses a built in list of authoritative nameservers for the root zone (.), the so called root hints. On receiving a DNS query it will ask
the root nameservers for an answer and will in almost all cases receive a delegation to a top level domain (TLD) authoritative nameserver.
It will then ask that nameserver for an answer. It will recursively continue until an answer is found or no answer is available (NXDO-
MAIN). For performance and efficiency reasons that answer is cached for a certain time (the answer's time-to-live or TTL). A second query
for the same name will then be answered from the cache. Unbound can also do DNSSEC validation.
To use a locally running Unbound for resolving put
nameserver 127.0.0.1
into resolv.conf(5).
If authoritative DNS is needed as well using nsd(8), careful setup is required because authoritative nameservers and resolvers are using
the same port number (53).
The available options are:
-h Show the version and commandline option help.
-c cfgfile
Set the config file with settings for unbound to read instead of reading the file at the default location,
/var/unbound/unbound.conf. The syntax is described in unbound.conf(5).
-d Debug flag: do not fork into the background, but stay attached to the console. This flag will also delay writing to the log file
until the thread-spawn time, so that most config and setup errors appear on stderr. If given twice or more, logging does not switch
to the log file or to syslog, but the log messages are printed to stderr all the time.
-v Increase verbosity. If given multiple times, more information is logged. This is in addition to the verbosity (if any) from the
config file.
SEE ALSO
unbound.conf(5), unbound-checkconf(8), nsd(8).
AUTHORS
Unbound developers are mentioned in the CREDITS file in the distribution.
NLnet Labs Dec 8, 2014 unbound(8)