05-11-2008
I'm sorry 4 the stupid question, now I remember that exists argc
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I am writing script in c shell and using this script to read the command line arguments, but it is not working. Pl. someone let me know what is the problem.
#!/bin/csh -f
if ($#argv <> 2) then
echo "you must give exactly two parameters"
else
set name1 = $argv
... (1 Reply)
Discussion started by: skumar11
1 Replies
2. Shell Programming and Scripting
In the make file
update updateq:
-------------------
----------
i want the makefile to display some messages when user gives "make update", but totally quite wehn user enters "make updateq". Can u tell me how to read these argument in makefile.
$1 doesnt work:( (3 Replies)
Discussion started by: vikashtulsiyan
3 Replies
3. Shell Programming and Scripting
Hi, Guys
I am new to shell programming and just get stuck with one simple question. please kindly help.
According to the tutorial here, we can do something like
for NODE in "ABC 10" "EFG 20"
do
set -- $NODE
echo "letter is $1, number is $2"
done
And the result will... (3 Replies)
Discussion started by: yuanli
3 Replies
4. Programming
Hello everybody,
I'm coding a program in C and i'm getting troubles with this.
I need to read a config file and store the arguments into individual variables, let's say the config file looks like the following:
#This is the configuration file...
192.168.0.1 A1:B1:C1:D1:E1:F1
192.168.0.2... (2 Replies)
Discussion started by: semash!
2 Replies
5. Shell Programming and Scripting
I have trouble getting this logic to work
#!/bin/bash
function assign_var(){
while
do
read -p "$2 :" $3
done
}
assign_var '$IPADDRESS' ipaddress IPADDRESS
Basicly, i want to make sure that entry is made (i can add more sophisticated checks later), but the idea is to recycle... (11 Replies)
Discussion started by: serverchief
11 Replies
6. Programming
I have the following piece of code. Currently the command line arguments are passed as shown below using the "= "sign. I capture the name of the argument, for example vmod and it's corresponding user parameter which is jcdint-z30.cmd.
./raytrac vmod=jcdint-z30.cmd srFile=jcdint.sr
Now I want... (12 Replies)
Discussion started by: kristinu
12 Replies
7. Shell Programming and Scripting
I am new to schell scripting . My objective is to write a ksh shell script that performs following tasks: -
1. Script reads all command line arguments (arguments are file names) and checks if it contains charachters "abc" in it.
2. If it contains "abc" it will execute a binary file xyz <command... (3 Replies)
Discussion started by: acmilan
3 Replies
8. Shell Programming and Scripting
I am developing a script where 3 other scripts are included.
This is a graph related script.
COMPLETE IDEA:
-There are 3 different graph scripts. I would like to create a master graph with all 3 in one.
-User chooses the type of graph
-User is asked to enter the required auguments (... (7 Replies)
Discussion started by: newkid.7955
7 Replies
9. Shell Programming and Scripting
Hi,
I need to get input arguments, as well as validate them. This is how I'm reading them:
#!/bin/bash
args="$@" # save arguments to variable
## Read input arguments, if so
while ; do
case $1 in
-v | --verbose ) verbose=true;;
-z | --gzip ) compression="gz";;
... (3 Replies)
Discussion started by: AlbertGM
3 Replies
10. UNIX for Advanced & Expert Users
Heays
So i have that script to which i'd like to pipe (rather than just regular arguments) some data from another virtual output command.
Simplified:
echo * | script.sh
When i know how many args i expect, i can handle this simple by:
&& \
read ONE TWO && \
set ONE TWO
echo "$1 : $2... (7 Replies)
Discussion started by: sea
7 Replies
LEARN ABOUT ULTRIX
getopt
getopt(3) Library Functions Manual getopt(3)
Name
getopt - get option letter from argument vector
Syntax
#include <stdio.h>
int getopt (argc, argv, optstring)
int argc;
char **argv;
char *optstring;
extern char *optarg;
extern int optind, opterr;
Description
The subroutine returns the next option letter in argv that matches a letter in optstring. The optstring is a string of recognized option
letters; if a letter is followed by a colon, the option is expected to have an argument that may or may not be separated from it by white
space. The optarg is set to point to the start of the option argument on return from
The function places in optind the argv index of the next argument to be processed. The external variable optind is automatically initial-
ized to 1 before the first call to
When all options have been processed (that is, up to the first non-option argument), returns EOF. The special option -- may be used to
delimit the end of the options; EOF will be returned, and -- will be skipped.
Diagnostics
The function prints an error message on stderr and returns a question mark (?) when it encounters an option letter that is not included in
optstring. Setting opterr to 0 disables this error message.
Examples
The following code fragment shows how one might process the arguments for a command that can take the mutually exclusive options a and b,
and the options f and o, both of which require arguments:
#include <stdio.h>
main (argc, argv)
int argc;
char **argv;
{
int c;
extern int optind, opterr;
extern char *optarg;
.
.
.
.
while ((c = getopt (argc, argv, "abf:o:")) != EOF)
switch (c) {
case 'a':
if (bflg)
errflg++;
else
aflg++;
break;
case 'b':
if (aflg)
errflg++;
else
bproc( );
break;
case 'f':
ifile = optarg;
break;
case 'o':
ofile = optarg;
bufsiza = 512;
break;
case '?':
errflg++;
}
if (errflg) {
fprintf (stderr, "usage: . . . ");
exit (2);
}
for ( ; optind < argc; optind++) {
if (access (argv[optind], 4)) {
.
.
.
}
See Also
getopt(1)
getopt(3)