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Top Forums UNIX for Advanced & Expert Users how to use trap command in shell script Post 302178394 by adderek on Tuesday 25th of March 2008 10:49:28 AM
Old 03-25-2008
I am not sure if I understood this correctly: You want to initialize SFTP transfer and detect when it fails or is running more than 5-10 minutes?
If so, then you could use multiple threads where one is watching the other one, or you could just wait until the SFTP session finishes.

Example code (I give no guarantee that it will work):
#!/bin/ksh
sftp -b batch_script login@server &
sleep 600
if [[ -n $(jobs) ]] ;then
typeset mypsid=$(jobs -l|awk '{print $3}')
if [[ -n "$mypsid" ]] && [[ "$mypsid" == [0-9]+ ]] ;then
kill -9 $mypsid
fi
repeat_sftp_sending
fi
 

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SFTP-SERVER(8)						    BSD System Manager's Manual 					    SFTP-SERVER(8)

NAME
sftp-server -- SFTP server subsystem SYNOPSIS
sftp-server [-ehR] [-f log_facility] [-l log_level] [-u umask] DESCRIPTION
sftp-server is a program that speaks the server side of SFTP protocol to stdout and expects client requests from stdin. sftp-server is not intended to be called directly, but from sshd(8) using the Subsystem option. Command-line flags to sftp-server should be specified in the Subsystem declaration. See sshd_config(5) for more information. Valid options are: -e Causes sftp-server to print logging information to stderr instead of syslog for debugging. -f log_facility Specifies the facility code that is used when logging messages from sftp-server. The possible values are: DAEMON, USER, AUTH, LOCAL0, LOCAL1, LOCAL2, LOCAL3, LOCAL4, LOCAL5, LOCAL6, LOCAL7. The default is AUTH. -h Displays sftp-server usage information. -l log_level Specifies which messages will be logged by sftp-server. The possible values are: QUIET, FATAL, ERROR, INFO, VERBOSE, DEBUG, DEBUG1, DEBUG2, and DEBUG3. INFO and VERBOSE log transactions that sftp-server performs on behalf of the client. DEBUG and DEBUG1 are equivalent. DEBUG2 and DEBUG3 each specify higher levels of debugging output. The default is ERROR. -R Places this instance of sftp-server into a read-only mode. Attempts to open files for writing, as well as other operations that change the state of the filesystem, will be denied. -u umask Sets an explicit umask(2) to be applied to newly-created files and directories, instead of the user's default mask. For logging to work, sftp-server must be able to access /dev/log. Use of sftp-server in a chroot configuration therefore requires that syslogd(8) establish a logging socket inside the chroot directory. SEE ALSO
sftp(1), ssh(1), sshd_config(5), sshd(8) T. Ylonen and S. Lehtinen, SSH File Transfer Protocol, draft-ietf-secsh-filexfer-00.txt, January 2001, work in progress material. HISTORY
sftp-server first appeared in OpenBSD 2.8. AUTHORS
Markus Friedl <markus@openbsd.org> BSD
January 9, 2010 BSD
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