I haven't programed in C in a few years. I have been doing a lot of shell scripting, I.E. not really programming anything heavy.
That said, I have a script that gives hourly usage statistics for our email server. It runs w-a-y to slow as a script for my impatience, and needs to be converted to C. That and some Windows admins have expressed interest in it. Porting to C would be easier to cross compile that a script.
In the shell script I have an output function where I can pass text color, formatting (4.3f, 6s, etc.) and value.
Shell Code
Code:
output{
printf "\033[$1m%$2\033[0m" $3
}
Here's what I have in C so far.
Code:
int output(int clr,float val){ // Add in the format if possible
switch (clr) {
case 0: printf("%c[%dm %2.3f ", 0x1B, 33, val); // print Yellow (Lower than average usage)
break;
case 1: printf("%c[%dm %2.3f ", 0x1B, 32, val); // print Green (Medium)
break;
case 2: printf("%c[%dm %2.3f ", 0x1B, 31, val); // print Red (High)
break;
case 3: printf("%c[%dm %2.3f ", 0x1B, 0, val); // print White (All else)
break;
}
}
Is there a way to pass the format parameter as a variable? I.E. pearl uses something like this %${fmt}f. Can this be done in C?
There are 5 columns, each can have their own color, width, format(d,s,f...) and value.
Obviously, the colors won't show up here. But you get the idea.
A good place to start is simple variable passing....
Passing variables from one script to another
The next level is passing a variable into a more complex command such as using a variable in a sed command. There are some simple quoting techniques that are very general. These are mentioned... (0 Replies)
hi,
i am passing around 14 parameters for a script
a=$1
b=$2
c=$3
d=$4
e=$5
f=$6
g=$7
h=$8
i=\"${9}\"
shift
j=\"${1}\"
still for j it is displaying the 1st parameter value..how to make it take the 10th parameter (2 Replies)
Hi all,
My simple AWK code does C = A - B
If C can be a negative number, how awk printf formating handles it using string format specifier.
Thanks in advance
Kanu
:confused: (9 Replies)
seems simple but i've not been successfull in adding the value of a Variable to a every line of a file using AWK & printf
i've come up with the following, but it's not working.:mad:
--- mydatafile.dat
e.g. of data in file:
cau_actvty_fa_lrf.ksh
fan_soco_fa.ksh
ny_sum_lst.ksh... (4 Replies)
Hi I'm having a problem with converting a file:
ID X
1 7
1 8
1 3
2 5
2 7
2 2
To something like this:
ID X1 X2 X3
1 7 8 3
2 5 7 2
I've tried the following loop:
for i in `cat tst.csv| awk -F "," '{print $1}'| uniq`;do grep -h $i... (4 Replies)
Hi Friends,
I am trying to insert lines of the below format in a file:
# x3a4914 Joe 2010/04/07
# seh Lane 2010/04/07
# IN01379 Larry 2010/04/07
I am formatting the strings as follows using awk printf:
awk 'printf "# %s %9s %18s\n", $2,$3,$4}'
... (2 Replies)
Getting the below error while executing this. Able to run the below commands Individually.
#!/bin/bash
a=$(printf "%d\n" 0x01E);
b=$(printf "%d\n" 0x01A);
echo $a
echo $b
c=`expr $a - $b`
echo $c
syntax error at line 2: `a=$' unexpected (2 Replies)
Hi All,
I am attempting to create a fixed length tilde delimited file using printf.
The variables are initialized to fixed length blank spaces
a=' '
b=' '
c=' '
d=' '
Sometimes the variable might contain values and sometimes they are... (5 Replies)
Trying to do so
echo "111:222:333" |awk -F: '{system("export TESTO=" $2)}'But it doesn't work (2 Replies)
Discussion started by: urello
2 Replies
LEARN ABOUT DEBIAN
gvrng
gvrng(1)gvrng(1)NAME
gvrng - An interactive, introductory programming language.
SYNTAX
gvrng [world file | program file]
DESCRIPTION
Guido van Robot is a project developed by advanced high school students for use by their peers as a learning tool and precursor to the fur-
ther study of programming with Python. It is a minimalistic programming language providing just enough syntax to help students learn the
concepts of sequencing, conditional branching, looping and procedural abstraction. It's biggest strength is that it permits this learning
in an environment that combines the thrill of problem-solving with instant visual feedback. In short, it is an interactive, introductory
programming language that is excellent for learning the basic concepts of programming, applicable in any high-level language. Best of all,
it's a whole lot of fun, too!
At this point, you are probably asking yourself, "What is GvRng, specifically?" The gist of it is that it is a robot represented by a tri-
angle on the screen that moves around in a world made up of streets and avenues, walls and "beepers", which Guido can collect or set. His
actions are completely guided by a program written by the user.
FILES
/usr/bin/gvrng
/usr/lib/gvrng
/usr/share/doc/gvrng
AUTHORS
Stas Zytkiewicz - stasz@linux.isbeter.nl
Waseem Daher - wdaher@mit.edu
Steve Howell - showell@zipcon.net
SEE ALSO
http://gvrng.sourceforge.net
Stas Zytkiewicz 1.0 09/13/2004 gvrng(1)
02-17-2014
Passing printf formatting parameters as variables
