10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All,
We have few scripts where we are using grep -w option to do exact matching of the pattern. This works fine on most of our servers.
But I have encounter a very old HP-UX System(HP-UX B.11.00) where grep -w option is not available.
This is causing my scripts to fail. I need to change... (7 Replies)
Discussion started by: veeresh_15
7 Replies
2. Shell Programming and Scripting
I am trying to code for the addition of a new argument to the command line, the option D to a code that already has ABC (below). When I use make to compile it, it displays: invalid option --D. I did define the global d variable, as well as initialized it inside the main function of the C code. I... (9 Replies)
Discussion started by: Alabama
9 Replies
3. Shell Programming and Scripting
What is the significance of the *) and ?) in the below code.
while getopts a:b:c:he opt
do
case $opt in
a) _name="$OPTARG";;
b) _project="$OPTARG";;
c) line="$OPTARG";;
e) _cmd="XX";;
h) Projects=1;;
*) echo "$OPTARG is an invalid option";
my_exit 1;;
?)... (3 Replies)
Discussion started by: posix
3 Replies
4. Shell Programming and Scripting
To find all the files in your home directory that have been edited in some way since the last tar file, use this command:
find . -newer backup.tar.gz
Is anyone familiar with an older solution?
looking to identify files older then 15mins across several directories.
thanks,
manny (2 Replies)
Discussion started by: mr_manny
2 Replies
5. UNIX for Dummies Questions & Answers
Hi
I need to use getopt option and I have no idea what it is or how to use it.
I need to use it on this awk script:
awk -F, -v cellid="$1" -v paramval="$2" -v oldfile="$3" -v newfile="$4" '$2==cellid{$3=newvalue}1' OFS="," $3 > $4
I tried reading up on it but I just confuse... (2 Replies)
Discussion started by: ladyAnne
2 Replies
6. Shell Programming and Scripting
Hello,
I am processing a text file which contains only words with few combination of characters (it is a dictionary file).
example:
havana
have
haven
haven't
havilland
havoc
Is there a way to exclude only 1 to 8 character long words which not include space or special characters : '-`~.. so... (5 Replies)
Discussion started by: alekkz
5 Replies
7. Shell Programming and Scripting
:)
Can anybody help me about how to use getopt in shell scripting. (3 Replies)
Discussion started by: darshakraut
3 Replies
8. Shell Programming and Scripting
I m trying to use getopt
This is my script, but it doesn't take argument in variable,
Please help.
set - - `getopt mscl: $*`
if
then
echo "Exiting...."
exit 2
fi
for i in $*
do
case $i in
-m) MAIL="$i"; shift;;
-s) SCRIPT=$OPTARG; shift;;
-c) COB=$OPTARG; shift;;... (2 Replies)
Discussion started by: darshakraut
2 Replies
9. Shell Programming and Scripting
Hi all,
I am parsing command line options using getopts.
The problem is that mandatory argument options following ":" is taking next option as argument if it is not followed by any argument.
Below is the script:
while getopts :hd:t:s:l:p:f: opt
do
case "$opt" in
-h|-\?)... (2 Replies)
Discussion started by: gurukottur
2 Replies
10. Shell Programming and Scripting
#!/bin/sh
set -- `getopt "abco:" "$@"`
a= b= c= o=
while :
do
case "$1" in
-a) a=1;;
-b) b=1;;
-c) c=1;;
-o) shift; o="$1";;
--) break;;
esac
shift
done
shift # get rid of --
# rest of script...
# e.g.
ls -l $@ (6 Replies)
Discussion started by: Hitori
6 Replies
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)