I am trying to read a file line-by-line in a while loop, and perform some tasks which involves non-interactive SSH to a remote server. The code looks something like this --
The problem is after executing the 1st run of the loop perfectly, the read of the while is just not able to read from the file that I've provided as an input to it. Is it happening because of the
part or the here-doc in the ftp part? Is there an alternate way to do this?
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I running this script using KSH in a Solaris box. When I run it using set -x option, the output that I get is
There is no '0< next.line.from.myFile' before the last 'read line'. This prompts me to conclude that ${myFile} is no longer attached to STDIN, and hence the read fails.
Thanks Chubler_XL! I could finally solve the problem. The issue was not with the indent of the EOF in the here-doc, but the 'ssh-add < /dev/null'. What this did was attach /dev/null to the STDIN and spawn a child-shell as soon as the script ssh-ed to the remoteHost. To avoid this, I altered the script as below --
The file '/home/subu/SSHInstructions.ksh' contained --
How does this help? This actually spawns a child-shell first and then attaches /dev/null to the STDIN of the child-shell, thereby leaving the STDIN of the parent shell as it was.
P.S. - the reason for lack of indentation in the SSH instructions is that it has a tendency to collapse all the indentations (tabs, blank-lines etc.) into white-spaces, leading the shell to interpret the whole thing as a single command-line.
Greetings.
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+ exec
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