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Problem with ssh and checking if file exists

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# 1  
Old 01-09-2014
Problem with ssh and checking if file exists
Hi All,

I am facing a problem while checking for existence of file over ssh !

Basically, i want to ssh and check if file exists.. If file exists return 1. If file does not exits return 0 (or any value)

I am using the below code

Code:
file_avail=`ssh username@host "if [[ -f directory/structure/Daily Report.xls ]]; then exit 1; else echo exit 0; fi"`

Please note that the file name here has spaces in it !

But i am not able to retrieve the status from ssh.

Please help !!
# 2  
Old 01-09-2014
Try:
Code:
file_avail=`ssh username@host 'if [[ -f "directory/structure/Daily Report.xls" ]]; then exit 1; else echo exit 0; fi'`

# 3  
Old 01-09-2014
Hi Klashxx,

I tried ur option.

Code:
file_avail=`ssh username@host 'if [[ -f "directory/structure/Daily Report.xls" ]]; then exit 1; else exit 0; fi'`

Still i am getting the output for file_avail as NULL

Code:
+ file_avail=''

Pls let me know what i am missing here!
# 4  
Old 01-09-2014
ok , use:
Code:
file_avail=`ssh username@host 'if [[ -f "directory/structure/Daily Report.xls" ]]; then echo 1; else echo 0; fi'`

Personally , i prefer:
Code:
ssh username@host 'if [[ -f "Daily Report.xls" ]]; then exit 1; else exit 0; fi'
file_avail=$?

This User Gave Thanks to Klashxx For This Post:
galaxy_rocky
# 5  
Old 01-09-2014
Thanks a lot for helping out on this Klashxx !

It worked !!!
# 6  
Old 01-09-2014
That code is rather redundant, this would do:

Code:
ssh username@host '[ -f "directory/structure/Daily Report.xls" ]'
file_avail=$?

These 2 Users Gave Thanks to Corona688 For This Post:
galaxy_rocky rbatte1
# 7  
Old 01-09-2014
So are we saying that SSH returns the exit code of the remote command? Remote-shell never did. You got the return code for "Did remote shell connect" pretty much, so we ended up with a fudge such that we run the remote shell commands with
Code:
rsh ${REMOTEHOST} "$COMMAND $ARGS ; echo \\"Final_RC=\\\$?\\"\""> logfile 2>&1

We then extract the one line with "Final_RC" and work out if the remote command ran okay.

It seems much better with SSH, thanks goodness! Roll on the upgrades here that make SSH available.

It's a shame we still have so much AIX 4.3.3, 5.1 and HP-UX 11.11 !! Smilie



Robin
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