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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 CENTOS

trace-cmd-check-events

TRACE-CMD-CHECK_EV(1)													     TRACE-CMD-CHECK_EV(1)

NAME

       trace-cmd-check-events - parse the event formats on local system

SYNOPSIS

       trace-cmd check-events [OPTIONS]

DESCRIPTION

       The trace-cmd(1) check-events parses format strings for all the events on the local system. It returns whether all the format strings can
       be parsed correctly. It will load plugins unless specified otherwise.

       This is useful to check for any trace event format strings which may contain some internal kernel function references which cannot be
       decoded outside of the kernel. This may mean that either the unparsed format strings of the trace events need to be changed or that a
       plugin needs to be created to parse them.

OPTIONS

       -N - Don't load plugins

SEE ALSO

       trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1),
       trace-cmd-list(1), trace-cmd-listen(1), trace-cmd-start(1)

AUTHOR

       Written by Vaibhav Nagarnaik, <vnagarnaik@google.com[1]>

RESOURCES

       git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git

COPYING

       Copyright (C) 2011 Google, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL).

NOTES

	1. vnagarnaik@google.com
	   mailto:vnagarnaik@google.com

								    06/11/2014						     TRACE-CMD-CHECK_EV(1)
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