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Pls HELP: Redirecting input to SFTP connection

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Top Forums Shell Programming and Scripting Pls HELP: Redirecting input to SFTP connection
# 1  
Old 04-11-2016
Pls HELP: Redirecting input to SFTP connection
Hi,

Can somebody please let me know if we can redirect variable value to the sftp connection. I am trying to run the attached snippet but facing an error.

Code:
dev@UAT.com> export USER1=ftp
dev@UAT> export HOST1=XX.XX.XX.XX
dev@UAT> export INPUTDATA2='lcd /Z02/apps/output/UAT/CMUP/incoming cd apl/apl001/download get UPLOAD.DAT bye'
dev@UAT> sftp -oProxyCommand='/usr/bin/nc -v -X 5 -x proxy:99 %h %p' -oPort=22 ${USER1}@${TARGETHOST1} < ${INPUTDATA2}
ksh: lcd /Z02/apps/output/UAT/CMUP/incoming cd apl/apl001/download get UPLOAD.DAT bye: cannot open [No such file or directory]

Please note that the operations which needs to be done after sftp connection is stored in
Code:
INPUTDATA2

Could someone suggest a better way to do that or identify the mistake I am making?

Regards,
# 2  
Old 04-12-2016
The redirection command < pathname feeds the contents of the file whose name is pathname into the standard of the command specified by command.

It would seem that you want something more like:
Code:
USER1=ftp
TARGETHOST1=XX.XX.XX.XX
printf '%s\n' 'lcd /Z02/apps/output/UAT/CMUP/incoming' \
	'cd apl/apl001/download' \
	'get UPLOAD.DAT' \
	'bye' |
    sftp -oProxyCommand='/usr/bin/nc -v -X 5 -x proxy:99 %h %p' -oPort=22 ${USER1}@${TARGETHOST1}

This User Gave Thanks to Don Cragun For This Post:
Khan28
# 3  
Old 04-12-2016
Thanks Don !! I will check and update.

---------- Post updated 04-12-16 at 04:03 AM ---------- Previous update was 04-11-16 at 10:26 PM ----------

Thanks it did worked.

Just out of curiosity can the same be achieved by using
Code:
<

The script I am changing was using
Code:
< ${INPUTDATA2}

while making a FTP connection and I am changing it to use SFTP connection.

Regards,
# 4  
Old 04-12-2016
sftp reads its commands from stdin, no matter if this is filled from the terminal, a pipe that forwards another program's output, or a redirection ("<") that opens a file to read from. But - it has to be a file! Your sample above offers the commands in a shell variable, which is interpreted as a filename and thus leads to the error message posted.
This User Gave Thanks to RudiC For This Post:
Khan28
# 5  
Old 04-12-2016
If working in a recent shell, you may want to lookup "Here Documents" that offer another way to redirect stdin.
This User Gave Thanks to RudiC For This Post:
Khan28
# 6  
Old 04-12-2016
Thanks Rudic for the elaboration.

The link was not functional. Could you please paste it again?

Regards,
# 7  
Old 04-12-2016
No link. man bash or man ksh.
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