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the command not :work as

-bash-3.00$ sed -ri '1/s/(.*)/"my text"\1/' myfile
sed: illegal option -- r

hello,
how can I add one text line string at the line number one of a file.

thankx,

hi,
how can I add a new value to crontab file using a script not using the command " crontab -e " .
ex:

echo " 10 10 * * * " >> /var/spoll/cron/crontabs/<username>

how can I do that in a...

how can I make options to my script as:
myscript.sh -s abc -f filename -v value
if there is an easy way and efficient to do that issue ?
plz advice.

dear friends ,
how can I use the SNMP protocol to monitor the network and send notification alerts to the clients which have windows machines.
I found the utility snmp_trapsend at the directory...

thanks for your help

-----Post Update-----

thanks for your help

I think the problem in this part of code : if ( FAILURE == updateDP( lupdatestruct,localstruct)) {
return FAILURE;
}


because if the if statement not satisfied ,the excusion
will not end due...

how can I make interfacing with the SCSI controller on linux system using C language to send or recieve data via this SCSI port like I made with serial port and socket ???:confused:
how can I deal...

I have AIX OS but this OS not has the " cu " command which allow me to connect to serial port .??
how can I get this command for " AIX 3 " OS,or is there are any equivalent command do the same...

the server's IP address should be in the hosts file .
check it in /etc/hosts or /usr/hosts .

thank you Gautamdheeraj I appreciate your help .
Is this book available and free on the internet ???

please I want a help to how can I get C++ compiler to AIX OS.

you can go to CodeProject. Free source code and programming help (http://www.codeproject.com) you will find your answer.

you can use fork or exec as posted by Pludi

you can use this working code :

void etherSetup(char *strIP,int nPort)
{
unsigned long ip;

if((*strIP <= '9') && (*strIP >= '0'))
{
if( (int)(ip = inet_addr(strIP)) == -1 )
{...

how can I use the functions setsockopt() and ioctl() in my code ???!!

hi all,
i meet a problem when opening a socket, is that when the remote host not available or its port hanged ,my program still suspending untill i cancel the operation...
but when the host is ok...