is it possible for me to have a shell script log me in to a telnet session? i have in mind something along the lines of
% telnet host < script, where the first two lines of script will be username and pass followed by a list of commands to execute on the remote host.
this doesn t work as... (4 Replies)
Hello all,
I would like to login from one unix-system with a (tcsh)-script to an other unix-system.The login-procedure and the transmission of username, resp. password runs via ssh.
The problem is after logging onto the remote server once "Enter" has to be pressed, before one gets to the... (1 Reply)
Hello Everyone,
I am a newbie in unix. I was practicing shell scripts on hp unix machine.
I changed my current login shell (Korn) to Bourne shell giving the following command.
$ chsh username /usr/bash
I am using secure shell client for accessing the hp ux server.
After which i... (4 Replies)
Any help on this ..... its a bit urgent !!!!
Hi
Can anybody provide info about the following???
i want to issue su (switch user) command from within a shell script
how to take the password without user intervention from the shell script only???? i.e using apssword which is already... (2 Replies)
Dear All,
I need to create a shell script which will login to a unix system with user root. I also need to supply the password for root through script only instead of entering it manually.
After i am logged in to the system i need to excute all the necessary commands.
so far i have done... (7 Replies)
Hi All ,
I need to call a script runscript_B.sh on server A, the runscript_B.sh script locating in server B.
The runscript_B.sh in calls another script runscript_A on server A itself.
it seend, i need to be connect from Server A to Server B using ssh.
I have tryed like this in... (3 Replies)
Hi,
I am a complete Unix novice and need some help with creating a login shell script. I have created a file with user details i.e. PIN, name etc and require help in recalling the specified details from the file and being prompted for a password on login. Any help would be very much appreciated.... (0 Replies)
Hi,
How i can pass the login details to the URL which is password protected with the htaccess using command line or script (perl,or shell,or php).
Any help or hint appreciated.
Thanks,
SJ (4 Replies)
hi,
i want to login as a different user inside a shell script and then call another shell script from that script.
how to do that?
original script : script_A.sh
so when the script_A.sh is called , i want to login as a different user and then call another shell script(script_B.sh) from... (3 Replies)
Guys please help me I have a linux class and I want to write a shell script who shows which user loged in and show the process that are active in his/her shell in another text file and email that file to root just when the user loged out
Thanks every bod (1 Reply)
Discussion started by: hamedk1122
1 Replies
LEARN ABOUT DEBIAN
subst
subst(3tcl) Tcl Built-In Commands subst(3tcl)__________________________________________________________________________________________________________________________________________________NAME
subst - Perform backslash, command, and variable substitutions
SYNOPSIS
subst ?-nobackslashes? ?-nocommands? ?-novariables? string
_________________________________________________________________DESCRIPTION
This command performs variable substitutions, command substitutions, and backslash substitutions on its string argument and returns the
fully-substituted result. The substitutions are performed in exactly the same way as for Tcl commands. As a result, the string argument
is actually substituted twice, once by the Tcl parser in the usual fashion for Tcl commands, and again by the subst command.
If any of the -nobackslashes, -nocommands, or -novariables are specified, then the corresponding substitutions are not performed. For
example, if -nocommands is specified, command substitution is not performed: open and close brackets are treated as ordinary characters
with no special interpretation.
Note that the substitution of one kind can include substitution of other kinds. For example, even when the -novariables option is speci-
fied, command substitution is performed without restriction. This means that any variable substitution necessary to complete the command
substitution will still take place. Likewise, any command substitution necessary to complete a variable substitution will take place, even
when -nocommands is specified. See the EXAMPLES below.
If an error occurs during substitution, then subst will return that error. If a break exception occurs during command or variable substi-
tution, the result of the whole substitution will be the string (as substituted) up to the start of the substitution that raised the excep-
tion. If a continue exception occurs during the evaluation of a command or variable substitution, an empty string will be substituted for
that entire command or variable substitution (as long as it is well-formed Tcl.) If a return exception occurs, or any other return code is
returned during command or variable substitution, then the returned value is substituted for that substitution. See the EXAMPLES below.
In this way, all exceptional return codes are "caught" by subst. The subst command itself will either return an error, or will complete
successfully.
EXAMPLES
When it performs its substitutions, subst does not give any special treatment to double quotes or curly braces (except within command sub-
stitutions) so the script
set a 44
subst {xyz {$a}}
returns "xyz {44}", not "xyz {$a}" and the script
set a "p} q {r"
subst {xyz {$a}}
returns "xyz {p} q {r}", not "xyz {p} q {r}".
When command substitution is performed, it includes any variable substitution necessary to evaluate the script.
set a 44
subst -novariables {$a [format $a]}
returns "$a 44", not "$a $a". Similarly, when variable substitution is performed, it includes any command substitution necessary to
retrieve the value of the variable.
proc b {} {return c}
array set a {c c [b] tricky}
subst -nocommands {[b] $a([b])}
returns "[b] c", not "[b] tricky".
The continue and break exceptions allow command substitutions to prevent substitution of the rest of the command substitution and the rest
of string respectively, giving script authors more options when processing text using subst. For example, the script
subst {abc,[break],def}
returns "abc,", not "abc,,def" and the script
subst {abc,[continue;expr {1+2}],def}
returns "abc,,def", not "abc,3,def".
Other exceptional return codes substitute the returned value
subst {abc,[return foo;expr {1+2}],def}
returns "abc,foo,def", not "abc,3,def" and
subst {abc,[return -code 10 foo;expr {1+2}],def}
also returns "abc,foo,def", not "abc,3,def".
SEE ALSO Tcl(3tcl), eval(3tcl), break(3tcl), continue(3tcl)KEYWORDS
backslash substitution, command substitution, variable substitution
Tcl 7.4 subst(3tcl)