That is how the scanf family of functions works. Try another test:
If you run this, this is what you get:
This is how it is implemented. Anyway, if you want to copy the second argument (argv[2]) into the message string, just use strcpy, like this:
This works as you want it to:
I am trying to print command line arguments one per second. I have this
while
do
echo "6"
shift
echo "5"
shift
echo "4"
shift
echo "3"
shift
echo "2"
shift
echo "1"
shift
done (2 Replies)
I have this while loop and at the end I am trying to get it to tell me the last argument I entered. And with it like this all I get is the sentence with no value for $1. Now I tried moving done after the sentence and it printed the value of $1 after every number. I don't want that I just want... (2 Replies)
Hi,
I have to store all the command line arguments into an array.
I have the following code.
**********************
#! /bin/sh
set -A arr_no_updates
i=1
while
do
arr_no_updates=$($i)
echo ${arr_no_updates}
i=$(($i+1))
done**************** (1 Reply)
I have this code, I thought it would automatically know the args sent to script when called from shell. But it seems to not see any...
main script:
. args
. errors
. opt
. clean
dbfile=""
opfile=""
# calls function in script below
chkarg
#check commands (2 Replies)
Hi I am executing a KSH script by passing command line arguments
example: Red Green Dark Red Blue
when I am splitting the arguments by using " "(Space) as delimiter
But the colour Dark Red is a single parameter. But it is getting splitted in between
How to avoid this. Please help Also... (4 Replies)
Hi,
i have a perl script named test.pl. It is executed as
cat *.log|test.pl
i need the complete command line args. I tried using basename $0 but im getting test.pl only but not cat *.log...
Can anyone help me on this.
Thanks in advance (3 Replies)
Hi,
Can you please hint me how to achieve the below?
Input:
$./script.sh start 1 2
Internally inside the script i want to set a single variable with $2 and $3 value?
Output:
CMD=$1
ARGS=$2 $3
--VInodh (10 Replies)
Hello All,
I have a Bash Script and an Expect script that together will SSH to another server and
do some stuff there... From within the Bash Script I process the Command Line Arguments,
which are Required Args and Optional Args.
When I call the Expect script from the Bash Script, I pass... (4 Replies)
I'm using getopts to process command line args in a Bash script. The code looks like this:
while getopts ":cfmvhs:t:" option; do
case $option in
c) operationMode="CHECK"
;;
f) operationMode="FAST"
;;
m) ... (6 Replies)
Discussion started by: gencon
6 Replies
LEARN ABOUT HPUX
optopt
getopt(3C)getopt(3C)NAME
getopt(), optarg, opterr, optind, optopt - get option letter from argument vector
SYNOPSIS DESCRIPTION
returns the next option letter in argv (starting from that matches a letter in optstring. argc and argv are the argument count and argu-
ment array as passed to optstring is a string of recognized option characters; if a character is followed by a colon, the option takes an
argument which may or may not be separated from it by whitespace.
is the index of the next element of the vector to be processed. It is initialized to 1 by the system, and updates it when it finishes with
each element of
returns the next option character from argv that matches a character in optstring, if there is one that matches. If the option takes an
argument, sets the variable to point to the option argument as follows:
o If the option was the last character in the string pointed to by an element of argv, then contains the next element of argv, and is
incremented by 2. If the resulting value of is greater than or equal to argc, this indicates a missing option argument, and returns
an error indication.
o Otherwise, points to the string following the option character in that element of argv, and is incremented by 1.
If, when is called, is NULL, or the string pointed to by either does not begin with the character or consists only of the character returns
-1 without changing If points to the string returns -1 after incrementing
If encounters an option character that is not contained in optstring, it returns the question-mark character. If it detects a missing
option argument, it returns the colon character if the first character of optstring was a colon, or a question-mark character otherwise.
In either case, sets the variable to the option character that caused the error. If the application has not set the variable to zero and
the first character of optstring is not a colon, also prints a diagnostic message to standard error.
The special option can be used to delimit the end of the options; -1 is returned, and is skipped.
RETURN VALUE
returns the next option character specified on the command line. A colon is returned if detects a missing argument and the first character
of optstring was a colon
A question-mark is returned if encounters an option character not in optstring or detects a missing argument and the first character of
optstring was not a colon
Otherwise, returns -1 when all command line options have been parsed.
EXTERNAL INFLUENCES
Locale
The category determines the interpretation of option letters as single and/or multi-byte characters.
International Code Set Support
Single- and multibyte character code sets are supported.
ERRORS
fails under the following conditions:
[EILSEQ] An invalid multibyte character sequence was encountered during option processing.
EXAMPLES
The following code fragment shows to process arguments for a command that can take the mutually exclusive options and and the options and
both of which require arguments:
#include <stdio.h>
#include <unistd.h>
main (int argc, char *argv[])
{
int c;
int bflg, aflg, errflg;
extern char *optarg;
extern int optind, optopt;
.
.
.
while ((c = getopt(argc, argv, ":abf:o:")) != -1)
switch (c) {
case 'a':
if (bflg)
errflg++;
else
aflg++;
break;
case 'b':
if (aflg)
errflg++;
else {
bflg++;
bproc( );
}
break;
case 'f':
ifile = optarg;
break;
case 'o':
ofile = optarg;
break;
case ':': /* -f or -o without arguments */
fprintf(stderr, "Option -%c requires an argument
",
optopt);
errflg++;
break;
case '?':
fprintf(stderr, "Unrecognized option: - %c
",
optopt);
errflg++;
}
if (errflg) {
fprintf(stderr, "usage: . . . ");
exit(2);
}
for ( ; optind < argc; optind++) {
if (access(argv[optind], 4)) {
.
.
.
}
WARNINGS
Options can be any ASCII characters except colon question mark or null
SEE ALSO getopt(1), thread_safety(5).
STANDARDS CONFORMANCE getopt(3C)