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Full Discussion: Help With FTP Shell Script
Top Forums Shell Programming and Scripting Help With FTP Shell Script Post 302545490 by Corona688 on Monday 8th of August 2011 01:01:26 PM
Old 08-08-2011
1) That is a useless use of cat
2) That is a useless use of backticks as $() are modern equivalents of the backtick. If your input file ever becomes too large for a shell variable to handle, the end of it could be silently ignored.
3) If you're running this code as root, that's dangerous and unnecessary.

This is safer and more efficient:
Code:
 while read LINE
do
        stuff
done < filename

As for the timeout, that's simple enough:

Code:
while read ip
do
        HOST=$ip
        USER='bob'
        PASS='bob'
        timeout 300 ftp -n $HOST <<EOF && echo "$ip"
user bob bob
EOF
        echo "$ip"
done < /root/Desktop/ftp.txt

The 300 is in seconds. If ftp takes longer than that, it will be killed and 'echo "$ip"' will be skipped. If FTP connects but fails to login, it will return nonzero and echo "$ip" will still be skipped.
 

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LEARN ABOUT LINUX

ftpconfig

ftpconfig(1M)                                             System Administration Commands                                             ftpconfig(1M)

NAME

       ftpconfig - set up anonymous FTP

SYNOPSIS

       ftpconfig [ftpdir]

       ftpconfig -d ftpdir

DESCRIPTION

       The ftpconfig script is executed by the super user to set up anonymous FTP. Anonymous FTP allows users to remotely log on to the FTP server
       by specifying the user name  ftp or anonymous and the user's email  address as password. The anonymous users  are  logged  on  to  the  FTP
       Server  and  given  access to a restricted file area with its own file system root. See chroot(2). The FTP area has  its own minimal system
       files.

       This command will copy and set up all the components needed to operate an anonymous FTP server, including creating the  ftp  user  account,
       creating  device  nodes,  copying  /usr/lib files, and copying timezone data.  The passwd and group files set up have been stripped down to
       prevent malicious users from finding login names on the server.  The anonymous file area will be placed  under  ftpdir.  If  the  ftp  user
       account already exists, then the current FTP area is used, and the system files in it are updated. All other files are left untouched. This
       command should be run to update the anonymous FTP area's configuration whenever a system patch is installed, or the system is upgraded.

OPTIONS

       -d       Create a new or update an existing ftpdir without creating or updating the ftp user account. Use this option when  creating  guest
                FTP user accounts.

OPERANDS

       The following operands are supported:

       ftpdir   The absolute pathname of the directory under which the anonymous FTP area is set up.

EXIT STATUS

       The following exit values are returned:

       0        Successful completion

       1        Improper usage of the command

       2        Command failed

ATTRIBUTES

       See attributes(5)  for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWftpu                     |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Evolving                     |
       +-----------------------------+-----------------------------+

SEE ALSO

       ftpaddhost(1M), in.ftpd(1M), useradd(1M), chroot(2), attributes(5)

SunOS 5.10                                                          1 May 2003                                                       ftpconfig(1M)
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