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loop
Post 8760 by rwb1959 on Wednesday 17th of October 2001 11:54:59 AM
10-17-2001
Well... I know Neo is going to bust my chops for this
but you did try somthing and you need a little
direction so here goes...
OK. The first thing you should do in all shell scripts is to
set up the execution environment. You do this by inserting
the following line as the very first line in your script
(without the comments)...
#!/bin/sh <- Bourne Shell (normally)
...or
#!/bin/ksh <- Korn Shell
...or
#!/bin/csh <- C Shell
...remember that $* expands to ALL the positional parameters.
You need to read each one into a variable...
for prog in $*
do
... now, each time through the loop, $prog contains the next
positional parameter. Next, you want to check $prog for
"ordinary file" AND "executable file"...
if [ -f $prog -a -x $prog ]
then
...
else
...
fi
...then end your "do/done" loop and exit
done
exit 0
...just FYI, it's good programming practice to return some
sort of value (0 = AOK, 255 = Error) although this is a personal
preference.
You can then run this script in the background...
myscript /bin/ls /usr/bin/stat /bin/df ./myprog &
...you get the picture.
but you did try somthing and you need a little
direction so here goes...
OK. The first thing you should do in all shell scripts is to
set up the execution environment. You do this by inserting
the following line as the very first line in your script
(without the comments)...
#!/bin/sh <- Bourne Shell (normally)
...or
#!/bin/ksh <- Korn Shell
...or
#!/bin/csh <- C Shell
...remember that $* expands to ALL the positional parameters.
You need to read each one into a variable...
for prog in $*
do
... now, each time through the loop, $prog contains the next
positional parameter. Next, you want to check $prog for
"ordinary file" AND "executable file"...
if [ -f $prog -a -x $prog ]
then
...
else
...
fi
...then end your "do/done" loop and exit
done
exit 0
...just FYI, it's good programming practice to return some
sort of value (0 = AOK, 255 = Error) although this is a personal
preference.
You can then run this script in the background...
myscript /bin/ls /usr/bin/stat /bin/df ./myprog &
...you get the picture.
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LEARN ABOUT DEBIAN
vm
VM(1) mgetty VM(1) NAME
vm - VoiceModem is the program for handling the voice modem functionality from shell scripts ACTIONS
beep options [<frequency [<length in 0.001sec>]]> diagnostics options device name (e.g. ttyS2 dial options phone number help play options [<file names]+> record options file name shell options [<shell script [shell options]]> wait options [<time in seconds]> devicetest OPTIONS
-c n use compression type n -d n set i/o device -t, -m, -i, -e, -s, -H equals to -d <2,3,4,5,6,7> -l s set device string (e.g. -l ttyS2:ttyC0) -v verbose output -w use off / on hook signal from local handset to start and stop recording -x n set debug level -L n set maximum recording length in sec -P print first DTMF tone on stdout and exit -R read and print DTMF string on stdout and exit -S s set default shell for shell scripts (e.g. -S /bin/sh) -T n set silence timeout in 0.1sec -V n set silence threshold to <n> (0-100%%) SEE ALSO
vgetty(1) POD ERRORS
Hey! The above document had some coding errors, which are explained below: Around line 30: You forgot a '=back' before '=head1' Around line 32: '=item' outside of any '=over' Around line 71: You forgot a '=back' before '=head1' perl v5.10.1 2010-04-04 VM(1)