[NTLUG:Discuss] Bash related question

[Vaidya, Harshal (Cognizant)]

Hi,

  Consider this snippet of a bash script i am writing.
  
1  retvalue = $(sftp2 -B ftpcommands db2admin at cq7092)
2  if [$retvalue -ne 0 ]
3   then
4  echo "file transfer failed"
5   else
6  echo "file transfer was successful"
7  fi

 When i run this script, the transfer actually completes successfully but i get an error at line 2 saying that 
    " [: too many arguments"

Moreover, the statement 6 is printed sometimes before the transfer starts and other times after the transfer  completes. Basically, it dosent run sequentially like a normal C program.

One thing which comes to my mind is that when bash runs the sftp2 command it runs it as a parallel command in a subshell. May be thats why the statement 6 is printed with no sequence in particular.

I want to ask you guys whether what I am thinking is correct or is there a different theory to this?

If this is really true then how do I detect whether the sftp2 command ran successfully or not?

Thanks,
- Harshal.


  
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