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Full Discussion: Regarding functions
Top Forums Shell Programming and Scripting Regarding functions Post 302069294 by Perderabo on Friday 24th of March 2006 03:40:42 AM
Old 03-24-2006
Quote:
Originally Posted by sendhilmani
show()
{
echo "Hi"
} | tee -a log
show
This creates a logfile and prints Hi in it.
I can't recreate that result. What shell are you using?

show() { echo "Hi" ; }
will define a function but does not run it. No output occurs.

show() { echo "Hi" ; } | tee -a log
The pipeline forces creation of a subshell. The subshell defines a function then exits producing no output. The empty output is piped to tee. With the -a option, tee appends nothing to the file. Maybe the file had Hi from a previous run?. The pipeline exits. Now when the parent shell next encounters "show", it will have no idea what that is supposed to be.

show() { echo "Hi" ; }
show | tee -a log
is maybe what you are trying to do.

Or
show () { echo "Hi" | tee -a log ; }
show
 

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LEARN ABOUT DEBIAN

isdnbill

isdnbill(1)						       Linux System Commands						       isdnbill(1)

NAME

       isdnbill - report isdn costs

DESCRIPTION

       isdnbill is a simple and imperfect utility to show the bill for ISDN calls.  Note that it is only for indicative purposes! It works best in
       Germany, and even then there are no guarantees.	Consider its use for educational purposes only...

       For better results, use isdnrep.

OPTIONS

       -V     show version

       -a     show all connections

       -e     show incomplete calls

       -f     recalculate costs _always_

       -i     show incoming calls

       -m     prices without VAT

       -n     do _not_ replace numbers with aliases

       -o     show outgoing calls

       -t     show only current connections

       -vn    verbose level n

       -Nnnn  show only calls with the specified number

       -I     show only calls on the internal S0 bus

       -E     show only calls on the external S0 bus

FILES

       /var/lib/isdn/calls or /var/lib/isdn/calls
	      isdnlog log file with information about all calls.

       /etc/isdn/isdn.conf
	      general configuration

       /etc/isdn/callerid.conf
	      aliases for telephone numbers

SEE ALSO

       isdnlog(5) isdnlog(8) isdnrep(1)

AUTHOR

       This manual page was written by Paul Slootman <paul@debian.org>, for Debian GNU/Linux.

ISDN 4 Linux 3.25						    2003-10-14							       isdnbill(1)
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