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Full Discussion: Non-integer argument in expr
Top Forums Shell Programming and Scripting Non-integer argument in expr Post 302520538 by niasha on Sunday 8th of May 2011 02:08:57 AM
Old 05-08-2011
Quote:
Originally Posted by ahamed101
How did you execute this? Arguments are 12 and 23 I guess, seems fine.

Try this, its all the same though
Code:
#!/bin/bash 
read  N1; read  N2
((sum=N1+N2))
echo $sum

regards,
Ahamed
thanks but i got this with this script

Code:
ehsan@debian:~$ telnet 192.168.1.4 1234
Trying 192.168.1.4...
Connected to 192.168.1.4.
Escape character is '^]'.
12 
23
")syntax error: invalid arithmetic operator (error token is "

Connection closed by foreign host.

both of this scripts work on my machine fine but when i want to use in on network with telnet they wont work , is there any config for telnet or is telnet change the argument to something else from integer ?
 

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ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
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