You should not use scanf to read lines, scanf has a list of problems that are too long to get into. (sscanf is safer.)
In general, if you want to use scanf, you should use fgets to get a whole line, then use sscanf to scan the string rather than the file to avoid buffering problems.
Hi,
Wish if could provide some clues.
How do I dump all the C program variables(global) into say a file with their names and the values. So that when I restart the application again I could use this same file for reinitializing.Is this possible?
Thanks,
Reji (1 Reply)
I'm writing a simple program in unix and was wondering how mid switch I can run a program and get someone to enter variables for it i.e.:
#!/bin/csh -f
echo "If you wish to do v press v"
echo "If you wish to compile press c"
echo "If you wish to add an entry press a"
echo "If you wish to... (1 Reply)
Hi
i used the following code to copy a directory from a source location to dest.
argv contains the source loc i/p by the user.
strcpy(source,argv);
strcpy(dest,"/home/MainServer/Job_dir/");
system("cp -r $source $dest");
it complies properly but during execution of the program it... (2 Replies)
hi
I wanted to access the C program variables in shell script.
This script is called from the same C program.
What are the ways in which i can access variables
thankx (3 Replies)
Hi,
i want to write a script that executes a program (exec?) .
this program then requires a filename as input.
how do i give it this input in the script so the program will be complete run and close by the script.
e.g.
exec prog.exe
program then asks for filename
"enter filename:"... (1 Reply)
Hello Geniuses of the unix world. please help, stupid chemist. I have the following script that I need to create a file. Doesnt make sense unless i explain this way: I need to create a file called summary.in I would like all these lines to be inserted however in the command line I would like the... (1 Reply)
So I need some help with this. Pardon me if I'm posting in the wrong forum, after some googling for my answer and finding nothing I found this forum. It seemed appropriate for what I was seeking. I just didnt find a forum that concerned the use of GDB. I'm learning to use the C language and GDB.... (2 Replies)
Hi there,
I need urgent help with a small program that is run via shell script. Unfortunately I only understand the bare basics of shell scripting and can't figure out how to do this.
We have a program that tests the connection between 3 servers. I have a script that lets the program run on... (15 Replies)
Discussion started by: Pherdinand
15 Replies
LEARN ABOUT NETBSD
audioctl
AUDIOCTL(1) BSD General Commands Manual AUDIOCTL(1)NAME
audioctl -- control audio device
SYNOPSIS
audioctl [-d device] [-n] -a
audioctl [-d device] [-n] name ...
audioctl [-d device] [-n] -w name=value ...
DESCRIPTION
The audioctl command displays or sets various audio system driver variables. If a list of variables is present on the command line, then
audioctl prints the current value of those variables for the specified device. If the -a flag is specified, all variables for the device are
printed. If the -w flag is specified audioctl attempts to set the specified variables to the given values.
The -d flag can be used to give an alternative audio control device, the default is /dev/audioctl0.
The -n flag suppresses printing of the variable name.
ENVIRONMENT
AUDIOCTLDEVICE the audio control device to use.
FILES
/dev/audio0 audio I/O device (resets on open)
/dev/audioctl0 audio control device
/dev/sound0 audio I/O device (does not reset on open)
EXAMPLES
To set the playing sampling rate to 11025, you can use
audioctl -w play.sample_rate=11025
To set all of the play parameters for CD-quality audio, you can use
audioctl -w play=44100,2,16,slinear_le
Note that many of the variables that can be inspected and changed with audioctl are reset when /dev/audio0 is opened. This can be circum-
vented by using /dev/sound0 instead.
COMPATIBILITY
The old -f flag is still supported. This support will be removed eventually.
SEE ALSO audioplay(1), audiorecord(1), mixerctl(1), audio(4), sysctl(8)HISTORY
The audioctl command first appeared in NetBSD 1.3.
BSD January 27, 2002 BSD