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Full Discussion: Shell Script to launch C program
Top Forums Shell Programming and Scripting Shell Script to launch C program Post 302408262 by redhead on Monday 29th of March 2010 03:46:08 AM
Old 03-29-2010
$fname is your read directory, it is not the filename to monitor, the filename to monitor will be stored in $i within your for loop.
SO it should be:
Code:
echo "please enter the file you wish to monitor";
read fname;
while true; do
read -p "are you sure you want to monitor the file: $fname?" yn

case $yn in
      [Yy]*) if [ -d $fname ]; then 
           for i in $fname/*; do
               ./desktop/monitor $i &
           done
       fi;;

[Nn]* ) exit;;

But if it's only one filename, then theres no need for the directory check ie:
Code:
echo "please enter the file you wish to monitor";
read fname;
while true; do
read -p "are you sure you want to monitor the file: $fname?" yn

case $yn in
      [Yy]*) if [ -f $fname ]; then 
               ./desktop/monitor $fname &
           fi;;

[Nn]* ) exit;;

 

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LEARN ABOUT CENTOS

pmloadderivedconfig

PMLOADDERIVEDCONFIG(3)					     Library Functions Manual					    PMLOADDERIVEDCONFIG(3)

NAME

       pmLoadDerivedConfig - load derived metric definitions from a file

C SYNOPSIS

       #include <pcp/pmapi.h>

       int pmLoadDerivedConfig(char *fname);

       cc ... -lpcp

DESCRIPTION

       Each  line of the file fname is either a comment line (with a ``#'' in the first position of the line) or the declaration of a derived per-
       formance metric, specified as:

       * the name of the derived metric, using the same ``dot notation'' syntax that is used for PCP  performance  metrics,  see  PCPIntro(1)  and
	 pmns(5).

       * an equals sign (``='')

       * a valid expression for a derived metric, as described in pmRegisterDerived(3).

       White space is ignored in the lines.

       For each line containing a derived metric definition, pmRegisterDerived(3) is called to register the new derived metric.

       The  result  from pmLoadDerivedConfig will be the number of derived metrics loaded from fname else a value less than zero in the case of an
       error.

EXAMPLE

       # sample derived metric definitions
       bad_in_pkts = network.interface.in.errors + network.interface.in.drops
       # note the following would need to be on a single line ...
       disk.dev.read_pct = 100 * delta(disk.dev.read) /
		   (delta(disk.dev.read) + delta(disk.dev.write))

SEE ALSO

       PCPIntro(1), PMAPI(3) and pmRegisterDerived(3).

Performance Co-Pilot													    PMLOADDERIVEDCONFIG(3)
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