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Full Discussion: Unix script (sh): state of ftp process
Top Forums Shell Programming and Scripting Unix script (sh): state of ftp process Post 302320111 by egiz81 on Wednesday 27th of May 2009 04:51:39 AM
Old 05-27-2009
Unix script (sh): state of ftp process
Hi guys,
I'm writing a script in which I have to get file from a remote host by ftp. The problem is that the remote machine could be very slow, not connected or ok. To resolve this problem, I write this:

[......]
echo "verbose on" > ftprap.cmd
echo "prompt " >> ftprap.cmd
echo "ascii" >> ftprap.cmd
echo "passive off" >> ftprap.cmd
echo "mget * " >> ftprap.cmd
echo "quit" >> ftprap.cmd

ftp %IP < ./ftprap.cmd > ftp.log 2>&1 &
PID_FTP=`echo $!`
sleep 60
ps -o pid,tty,time,cmd,state|grep -E "$PID_FTP%S" >/dev/null 2>/dev/null

if [ $? = 0 ]
then
kill -9 $PID_FTP >> ftp.log 2>&1
fi
[......]

To kill ftp only if it is blocked.

It happens that even if ftp runs, ps shows me with state = S, that is sleeping!!! I try to run the script with “sleep 1”, while it's transferring a lot of file, and I'm sure of this: ps shows ftp is sleeping and then the script kills it.
I'm not so very expert about unix scripting, so I don't' know where I make mistakes.

Would you help me? Thanks in advanced.
 

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LEARN ABOUT SUNOS

ftp

ftp(4)								   File Formats 							    ftp(4)

NAME

       ftp - FTP client configuration file

SYNOPSIS

       /etc/default/ftp

DESCRIPTION

       Use  the ftp file to configure the behavior of the FTP client. Lines that begin with a hash symbol ("# ") are treated as comment  lines and
       are ignored.

   Behavior Directives
       The ftp file supports the following behavior directives:

       FTP_LS_SENDS_NLST=yes | no

	   The ls command of the ftp client sends an NLST to the FTP Server by default. Several non-Solaris clients send LIST instead. In order to
	   make the Solaris ftp client send LIST when the ls command is issued, set FTP_LS_SENDS_NLST to no. The value of FTP_LS_SENDS_NLST is yes
	   by default.

       If the user sets a value for FTP_LS_SENDS_NLST in the user's environment, this value will override any FTP_LS_SENDS_NLST directive that	is
       specified in /etc/default/ftp.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWbipr			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ftp(1), attributes(5)

SunOS 5.10							    22 Oct 2002 							    ftp(4)
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