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Top Forums UNIX for Dummies Questions & Answers how to check if a string consist of any space? Post 302219683 by yang on Tuesday 29th of July 2008 10:22:25 PM
Old 07-29-2008
sorry..i tried using all these code..but it dun work
i have the following code

while test -z $username
do
echo -n "enter username: " ;read username
done

this code gives me an error if i enter something like this
a b
test: a: binary operator expected

thanks a lot
 

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ftphosts(4)							   File Formats 						       ftphosts(4)

NAME
ftphosts - FTP Server individual user host access file SYNOPSIS
/etc/ftpd/ftphosts DESCRIPTION
The ftphosts file is used to allow or deny access to accounts from specified hosts. The following access capabilities are supported: allow username addrglob [addrglob...] Only allow users to login as username from host(s) that match addrglob. deny username addrglob [addrglob...] Do not allow users to login as username from host(s) that match addrglob. A username of * matches all users. A username of anonymous or ftp specifies the anonymous user. addrglob is a regular expression that is matched against hostnames or IP addresses. addrglob may also be in the form address:netmask or address/CIDR, or be the name of a file that starts with a slash ('/') and contains additional address globs. An exclamation mark (`!') placed before the addrglob negates the test. The first allow or deny entry in the ftphosts file that matches a username and host is used. If no entry exists for a username, then access is allowed. Otherwise, a matching allow entry is required to permit access. EXAMPLES
You can use the following ftphosts file to allow anonymous access from any host except those on the class A network 10, with the exception of 10.0.0.* IP addresses, which are allowed access: allow ftp 10.0.0.* deny ftp 10.*.*.* allow ftp * 10.0.0.* can be written as 10.0.0.0:255.255.255.0 or 10.0.0.0/24. FILES
/etc/ftpd/ftphosts ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWftpr | +-----------------------------+-----------------------------+ |Interface Stability |External | +-----------------------------+-----------------------------+ SEE ALSO
in.ftpd(1M), ftpaccess(4), attributes(5) SunOS 5.10 1 May 2003 ftphosts(4)
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