Sponsored Content
Full Discussion: C terminal commands
Top Forums Programming C terminal commands Post 302759165 by milestails on Monday 21st of January 2013 04:29:35 PM
Old 01-21-2013
In the file I have it does it about the same way as you said.
Code:
void getValues() {
 char line[100];
 
  remove("/tmp/value.txt");
  system(leftCmd);
  system(rightCmd);
  system(ledCmd);
 lv1=lv2;
 rv1=rv2;
 lev1=lev2;
 
 fr = fopen ("/tmp/value.txt", "r");
 fgets(line, 80, fr) ;
 sscanf (line, "%llu", &lv2);
 fgets(line, 80, fr) ;
 sscanf (line, "%llu", &rv2);
 fgets(line, 80, fr) ;
 sscanf (line, "%llu", &lev2);
 fclose(fr);
}
 
 
void getConfig ()
{
 FILE *fc;
  char key[100];
  char value[200];
  char row[1024];
 
 char *p;
  fc=fopen("current.cfg","r");
  while (!feof(fc) ){
    fgets(row,200,fc);
 
   if (strlen(row)<4) continue;
    if( sscanf(row,"%[^=]=%[^=\n]",key,value)==2 ) {
        if (strlen(key)<4) continue;
 if (strcmp (key,"sleepTime")==0) sleepTime=strtol(value,&p, 10);
 if (strcmp(key,"leftComunity")==0) strcpy(leftComunity,value);
 if (strcmp(key,"leftIP")==0) strcpy(leftIP,value);
 if (strcmp(key,"leftMIB")==0) strcpy(leftMIB,value);
 if (strcmp(key,"rightComunity")==0) strcpy(rightComunity,value);
 if (strcmp(key,"rightIP")==0) strcpy(rightIP,value);
 if (strcmp(key,"rightMIB")==0) strcpy(rightMIB,value);
 if (strcmp(key,"ledComunity")==0) strcpy(ledComunity,value);
 if (strcmp(key,"ledIP")==0) strcpy(ledIP,value);
 if (strcmp(key,"ledMIB")==0) strcpy(ledMIB,value);
 if (strcmp(key,"leftMax")==0) leftMax=strtol (value, &p, 10);
 if (strcmp(key,"rightMax")==0) rightMax=strtol (value, &p, 10);
 if (strcmp(key,"ledMax")==0) ledMax=strtol (value, &p, 10);
   }
}   
 fclose(fc);
 
 sprintf(leftCmd,"snmpget -v 1 -c \"%s\"  %s %s   | awk '{print $4 >> \"/tmp/value.txt\" }'",    leftComunity,leftIP,leftMIB);
 sprintf(rightCmd,"snmpget -v 1 -c \"%s\"  %s %s   | awk '{print $4 >> \"/tmp/value.txt\" }'",   rightComunity,rightIP,rightMIB);
 sprintf(ledCmd,"snmpget -v 1 -c \"%s\"  %s %s   | awk '{print $4 >> \"/tmp/value.txt\" }'", ledComunity,ledIP,ledMIB);
 }
 
int main(int argc, char ** argv)
{
 int difference;
 //struct ntptimeval start, elapsed;
 
 
 struct usb_dev_handle * perf_fs_usb = usb_perf_fs_usb_open();
 getConfig();
 
 printf("Starting monitoring:\n");
 ntp_gettime(&start);
 getValues();
while(1) {
usleep(sleepTime);
 getValues();
 ntp_gettime(&elapsed);
 difference=difference_micro(&start, &elapsed) ;
 ntp_gettime(&start);
 left=umin((lv2-lv1)*800/difference/leftMax ,100);
 right=umin((rv2-rv1)*800/difference/rightMax ,100);
 led=umin((lev2-lev1)*800/difference/ledMax ,100);
 printf ("sleep %i ",difference);
 printf ("display: %i %i %i\n",right,left, led);
writeUSB(perf_fs_usb,right,left,led);
 
 
   }

So If I understand it right
sprintf sets “leftcmd” which runs the “snmpget” command and writes the output to values.txt
system(leftcmd) is to run the snmpget again to update numbers
fopen value.txt , sscanf (line, "%llu", &lv2) sets it to lv2
left=lv2

The issue is the command I need to run and how to handle it is different. The original way gets total packets and compares them to get a speed then divides for percentage. The command I have already gives me “4.5” Mbps.

Can I skip the writing it to values.txt and do ‘print in=$1'. Then to get percentage left=in/leftmax.

Thanks.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Terminal Commands

Hi there. Linux newbie and I'm trying to find commands to: Display number of executable files in a directory that i supply and list them in alphabetical order Back up all the files in the current irectory to a directory i supply, creating that directory if it's not allready there Cound... (5 Replies)
Discussion started by: indigoecho
5 Replies

2. Shell Programming and Scripting

Displaying a dialog box using terminal commands

Hello, I used the command osascript -e 'tell app "Finder" to display dialog "Hey!"' to display a dialog box..it works fine, it displays a dialog box with 'OK' and 'CANCEL' buttons..i want to get the button returned value how can i do that using terminal command? is there any command to get... (1 Reply)
Discussion started by: keshav.murthy@r
1 Replies

3. Cybersecurity

How do i find all the commands entered by root on any terminal

Can any one help me with a script, which runs in background and mails me all the commands entered by root on any terminal for every hour. We have multiple people having root access on the server and creating a mess,i just wanted to monitor all the activity of the root. (13 Replies)
Discussion started by: vishnu787
13 Replies

4. Shell Programming and Scripting

commands in the terminal

hi.. I have a small question...if I have a textfile..let say apple.txt and I want to 1. search for all strings that's 6 characters long, and contains the letters a,b,c,d. 2. search for all words that that begins with "sUn" and ends with "flower" 3. search for all the words beginning with the... (3 Replies)
Discussion started by: Oregano
3 Replies

5. UNIX for Dummies Questions & Answers

help with simple terminal commands

i am at home with a windows xp home, and i am using putty terminal to access my linux mathlab account, my task is to compile and run a C program, called a.c, i used gcc -Wall -g -o mycode a.c to compile it into a mycode file now when i want to run it, i was told i had to use $... (2 Replies)
Discussion started by: omega666
2 Replies

6. UNIX Desktop Questions & Answers

help with some basic osx terminal commands. fixing permissions on NAS share

I'm hoping someone here can help me. I'm computer literate but by no means an expert! I'm simply trying to recover data from my DLink DNS343 NAS mounted on my X86 iMac using SMB. Somehow, in moving to a new computer, I have lost access to some files on the NAS. Just some files are access denied. ... (0 Replies)
Discussion started by: Quantaa
0 Replies

7. Shell Programming and Scripting

Replicate history commands in multiple terminal

Hi, I am using putty client to connect to my remote Linux server box, and I am connecting through ssh. That system runs bash shell. So, if I use multiple putty terminal, how can I replicate those commands that I ran in other terminals to be available/shared in the current terminal window (i.e)... (1 Reply)
Discussion started by: royalibrahim
1 Replies

8. OS X (Apple)

Terminal autorunning commands at start

How do I make terminal autorun commands at start up? For example, I have several windows of terminal, I want one to automatically run 'top' and a couple others autorun 'man' pages. Is there any way I can do this? (1 Reply)
Discussion started by: randomtypos
1 Replies

9. Shell Programming and Scripting

How to save and execute terminal commands in shell?

I frequently use some commands, which I want to save in some file say myregularshell.shthese are the commands I use, I tried saving and executing, but couldn't get the preview of execution, and result is also not coming if I copy same commands and paste it on terminal result is coming cd go... (2 Replies)
Discussion started by: Akshay Hegde
2 Replies

10. Ubuntu

Creating terminal commands

I've written a program in C, called count_0.1 which is essentially a word count program. I want to be able to use it as a command in the terminal (by typing in count), like when you type in ls, you don't have to go to a directory, find an executable and type in: ./ls I've tried: Adding... (1 Reply)
Discussion started by: usernamer
1 Replies
All times are GMT -4. The time now is 02:26 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy