writing a pipe with a c telnet Post: 302182825

10 More Discussions You Might Find Interesting

1. Programming

pipe help

i made a lot of processes. here is the code: main() { printf("\nEnter K="); scanf("%d",&k); printf("Enter L="); scanf("%d",&l); printf("\nFather id=%d\n",getpid()); x=0; makechild(); sleep(2); return 1; } int makechild() { for(q=1;q<=k;q++) { if(f=fork()) { ...

2. UNIX for Dummies Questions & Answers

broken pipe?

Hi there, I try to use: > find * | ls but it just gave me one level of ' ls '. and it said: > find * | ls dir1 dir2 f1 f2 f3 Broken Pipe > what is broken pipe? how can i fix it? thks Gusla

3. Shell Programming and Scripting

Webpage to Telnet via Perl and Expect: Telnet problem?

Somewhat long story: I have a simple Perl CGI script that uses Expect to Telnet to a device and grab some data, and then spits it back to Perl for display on the Webpage. This works for many devices I've tried, but one device just fails, it keeps rejecting the password on this device, only...

4. Shell Programming and Scripting

How can I use pipe

Hi, guys: I am working on my shell using c. How can I use pipe to implement the following? ls -l 1>> | grep hellp 1<< 2>> | less 2<< (the output of ls goes to grep, and the output of grep goes to less) Thanks Please use and tags when posting code, data or logs etc. to preserve...

5. Shell Programming and Scripting

Replace pipe with Broken Pipe

Hi All , Is there any way to replace the pipe ( | ) with the broken pipe (0xA6) in unix

6. UNIX for Dummies Questions & Answers

Automatically login in the telnet from present telnet

Hi, I was writing one script which includes to switch to the another telnet automatically from the present telnet server. I was using rlogin but firstly it takes the same user name of the present telnet and secondly it is prompting for the password. But i want to switch to the another telnet...

7. UNIX for Dummies Questions & Answers

xargs vs. pipe

I have been using unix on and off for a number of years. I am not a sys admin. I use what I need. I have googled this, but I really can't figure out what is the difference between using xarg and just using a regular pipe? Why do I need to include xarg sometimes and how do I know when I need it?

8. UNIX for Dummies Questions & Answers

pipe > output

I can use pipe output to a file. For example ./somescript.sh > output.txt But for example if the output from ./somescript.sh is slow. like if it prints one line every minute then output.txt is not updated every minute. Lines are written to output.txt in one go, hence have to wait for the whole...

9. UNIX for Dummies Questions & Answers

Difference Between Krb5-telnet And Ekrb5-telnet

Hi, I want to know the difference between these two services. Both are under xinetd. Both are used for enabling and disabling Telnet service. So, can somebody please explain me the difference between the two ? Thanks in advance :)

10. Shell Programming and Scripting

How to ignore Pipe in Pipe delimited file?

Hi guys, I need to know how i can ignore Pipe '|' if Pipe is coming as a column in Pipe delimited file for eg: file 1: xx|yy|"xyz|zzz"|zzz|12... using below awk command awk 'BEGIN {FS=OFS="|" } print $3 i would get xyz But i want as : xyz|zzz to consider as whole column...

LEARN ABOUT ULTRIX

telnetd

telnetd(8c) telnetd(8c)

Name
telnetd - DARPA TELNET protocol server

Syntax
/etc/telnetd

Description
The server supports the DARPA standard TELNET virtual terminal protocol. The TELNET server is invoked when receives a connection request
on the port indicated in the TELNET service description.

The server operates by allocating a pseudo-terminal device for a client, then creating a login process which has the slave side of the
pseudo-terminal as stdin, stdout, and stderr. The server manipulates the master side of the pseudo terminal, implementing the TELNET pro-
tocol and passing characters between the client and login process.

When a TELNET session is started up, sends a TELNET option to the client side indicating a willingness to do remote echo of characters, to
suppress go ahead, and to receive terminal type information from the remote client. If the remote client is willing, the remote terminal
type is propagated in the environment of the created login process. The pseudo terminal allocated to the client is configured to operate
in cooked mode and with XTABS and CRMOD enabled.

Aside from this initial setup, the only mode changes will carry out are those required for echoing characters at the client side of the
connection.

The server supports binary mode, suppress go ahead, echo, and timing mark. It also allows a remote client to do binary, terminal type, and
suppress go ahead.

Restrictions
Some TELNET commands are only partially implemented.

The TELNET protocol allows the exchange of the number of lines and columns on the user's terminal, but does not make use of them.

The terminal type name received from the remote client is converted to lower case.

The server never sends TELNET go ahead commands.

See Also
telnet(1c), pty(4), tty(4), services(5), inetd(8c)

telnetd(8c)

10 More Discussions You Might Find Interesting

1. Programming

pipe help

Discussion started by: bb666

2. UNIX for Dummies Questions & Answers

broken pipe?

Discussion started by: gusla

3. Shell Programming and Scripting

Webpage to Telnet via Perl and Expect: Telnet problem?

Discussion started by: jondo

4. Shell Programming and Scripting

How can I use pipe

Discussion started by: tomlee