Shell Programming and Scripting

I'm having problems with this example:

Code:

#!/bin/bash

for i in server1 server2 server3
do
    ssh $i <<EOF >> logfile.txt
      dat1=`date '+%m/%d/%y'`
      hst=`hostname`
      df -Ph | awk -v OFS=',' -v dat="$dat1,$hst" ' {print dat,$1,$6,$3,$4 } '
      exit
    EOF
done

I'm trying to get the disk information and output it to logfile.txt.

I'm getting the error:

./disk_check.sh: line 12: syntax error: unexpected end of file

I've tried many different permutations, but no luck.

The terminating EOF needs to appear at the very beginning of the line. If you want to indent it, you must the <<- redirection operator, which strips all leading tabs (not spaces) from all of the lines.

Regards,
Alister

---------- Post updated at 12:53 AM ---------- Previous update was at 12:46 AM ----------

You'll also need to backslash escape the dollar symbols in the awk script. The quotes are not special to the here-document, so they do not prevent the shell expansion of $1,$6,$3,$4.

Or, if you don't want any of the expansions (including the command substitutions) to occur locally, in the redirection operation you'll want to quote EOF, <<'EOF' (or <<-'EOF' if you want to strip leading tabs).

Regards,
Alister