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Top Forums Shell Programming and Scripting Please help to debug a small shell script (maybe AWK problem)? Post 302247283 by Perderabo on Wednesday 15th of October 2008 10:16:44 AM
Old 10-15-2008
While I agree with the double quotes as a good general practice, it won't solve your problem:

mail -s "High load on procede02" $mail_to < `uptime`

You can't do that. You are trying to use the output of uptime as a file to be opened. You don't have a file by that name, so you get the "can not open".

And [43] means the shell was at line 43 on the script when it decided it had a problem. Sometimes the error is earlier in the file, but never later.
 

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RUPTIME(1)						    BSD General Commands Manual 						RUPTIME(1)

NAME
ruptime -- show host status of local machines SYNOPSIS
ruptime [-alrtu] DESCRIPTION
ruptime gives a status line like uptime(1) for each machine on the local network; these are formed from packets broadcast by each host on the network via the rwhod(8) daemon. The default broadcast time by the hosts is every three minutes. Machines for which no status report has been received for 11 minutes are shown as being down. The options are as follows: -a Users idle an hour or more are not counted unless the -a flag is given. -l Sort by load average. -r Reverses the sort order. -t Sort by uptime. -u Sort by number of users. The default listing is sorted by host name. FILES
/var/rwho/whod.* data files SEE ALSO
rup(1), rwho(1), uptime(1), rwhod(8) HISTORY
ruptime appeared in 4.2BSD. BSD
August 9, 2005 BSD
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