I Found solution atleast for telnet .. something is better than nothing .
Trick was to define a prompt so that it does not get printed on your screen and to get rid of banner "waitfor" worked. I donno how .. but it worked may be someone can explain.
Following is output for this basic script.
Last edited by pludi; 11-09-2010 at 04:35 AM..
Reason: code tags, please...
I have been using the following code for sending out an email from a AIX UNIX platform.
cat filename | telnet mailhost 25 >/dev/null
Time to time I get a message
loopback: A specified file does not support the ioctl system call.
Can anyone tell me what this means? I need this function... (1 Reply)
Hi all,
I need few information as follows:
1. I am acessing one the machine uismg putty at port no 12023 using telnet service.
My question is i heard by defalult the port for telnet is 23. Why it is 12023 in my case. Also where can i change it.
2. i install new debian server. And then... (1 Reply)
I amn't advance but i want to learn some commands where here you can help me. i don't learn easy commands but i learn if its good experience and interesting. I want to learn about ssh, telnet and how i can be miff ( i don't speek good english but i hope to understant me) thanks for any help... (1 Reply)
dear all,
I know that this question has been asked before frequently, but I really don't get it. My question is composed of several ones.
First:To telnet through a script, I was told to use the way described below, and it works for me, but i don't understand the syntax here.... (3 Replies)
I would like to use the WWW::Mechanize module to access a webpage that is password-protected. I was wondering if there was a way to make the input silent when asked from the script. For example:
What is your password: <password>
Where <password> is where you put your password, but is silent... (2 Replies)
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... (1 Reply)
Hi All,
I was implementing a change of TELNET to SSH connectivity, and finding it tough at a point where I was connecting to another unix server through TELNET.
( ps -ef |grep abcd) | TELNET x.xx.xxx.xx
now I when I tried to replace TELNET with SSH, i am not able to connect.
( ps -ef... (1 Reply)
Hey,
I have upgraded 3 servers from SSH Tectia 4.0.3 to SSH Tectia 6.0.2. 2 of them are working fine but one server suddenly began to have troubles after about 2 hours. Now it is impossible to login to this server using SSH and even telnet. When SSH is running on this particular server, the CPU... (20 Replies)
Hello Experts,
I am learning perl. I know ksh/bash/csh...
In ksh I use to do this way... to read user input in silent mode so that nothing returns on the screen.
stty -echo
read -r pswd
stty echo
Please let me know the way in perl how to do it.
Here are my OS and Perl Details...
... (3 Replies)
Discussion started by: explorer007
3 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS --debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.16.3 2010-06-11 SHELL-QUOTE(1)