Hello,
I'm stuck and confused as to why when I execute things form the command line it works but when in a script it doesn't.
My script:
### creating a lock on the console
touch /var/run/console.lock
chmod 600 /var/run/console.lock
echo "$User" >>... (2 Replies)
Howdie everyone...
I have a shell script RemoveFiles.sh
Inside this file, it only has two commands as below:
rm -f ../../reportToday/temp/*
rm -f ../../report/*
My problem is that when i execute this script, nothing happened. Files remained unremoved. I don't see any error message as it... (2 Replies)
Hi everybody:
I usually use Mandriva distro (in my laptop), and I have made some scripts. These scripts work correctly but now, in other computer which is installed Ubuntu don't work, and I have this error message:
The script is:
.....
echo "Your option is:"
echo
read option
case... (1 Reply)
Hi there. I'm new to scripting in bash shell and I have this problem.
I'm trying to make a script that returns the greatest common divisor of two integer numbers according to Euclid's algorithm...
Here is, what I've done:
#!/bin/bash
m=$1
n=$2
while
do
if ; #line 8
then m=$m-$n... (1 Reply)
Hi All,
Using Expect script when I run it manually it works. But when I put the entry in crontab, the job is still running after 15 hours. The script was created as root. I don't think it's a permission issue. Any idea?
This is what I have under root crontab...
00 18 * * 1-5... (4 Replies)
Hello,,
Im verry new to scripting and have some problems with this script i made..
What it does:
It checks a directory for a new directory and then issues a couple of commands.
checks sfv - not doing right now
checks rar - it checks if theres a rar file and when there is it skips to... (1 Reply)
Hi there,
the following script doesn't work. the first part works, then the second 'grep' fails with ': not found'. However, if I take out the second part (starting with the grep command) and put in a seperate script, it works.
everyone know what's wrong here? no two 'grep' in one script, that... (2 Replies)
I have a script that only works if I remove it from the looping scenario.
#!/bin/bash
# Set the field seperator to a newline
##IFS="
##"
# Loop through the file
##for line in `cat nlist.txt`;do
# put the line into a variable.
##dbuser=$line
echo "copying plugin..."
... (6 Replies)
hi,
i am trying to run this script.the name of script is final.sh
after i run it:
#./final.sh &
i grep the command
# ps -a | grep bash
and i see more then one processes runing 3!!
Please use code tags
how can i solve this problem?
my target script must always run in... (8 Replies)
I am trying to run a script to make a simple modification to a number of similar files. The sed works, but after it runs and the differences are displayed, the script does not read ans to start a renaming script if the user answered Y or y.for i in "$@"
do
sed -f myfile.sed $i >$i.new
diff... (2 Replies)
Discussion started by: wbport
2 Replies
LEARN ABOUT OPENDARWIN
rtnetlink
RTNETLINK(3) Linux Programmer's Manual RTNETLINK(3)NAME
rtnetlink - macros to manipulate rtnetlink messages
SYNOPSIS
#include <asm/types.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <sys/socket.h>
rtnetlink_socket = socket(AF_NETLINK, int socket_type, NETLINK_ROUTE);
int RTA_OK(struct rtattr *rta, int rtabuflen);
void *RTA_DATA(struct rtattr *rta);
unsigned int RTA_PAYLOAD(struct rtattr *rta);
struct rtattr *RTA_NEXT(struct rtattr *rta, unsigned int rtabuflen);
unsigned int RTA_LENGTH(unsigned int length);
unsigned int RTA_SPACE(unsigned int length);
DESCRIPTION
All rtnetlink(7) messages consist of a netlink(7) message header and appended attributes. The attributes should be manipulated only using
the macros provided here.
RTA_OK(rta, attrlen) returns true if rta points to a valid routing attribute; attrlen is the running length of the attribute buffer. When
not true then you must assume there are no more attributes in the message, even if attrlen is nonzero.
RTA_DATA(rta) returns a pointer to the start of this attribute's data.
RTA_PAYLOAD(rta) returns the length of this attribute's data.
RTA_NEXT(rta, attrlen) gets the next attribute after rta. Calling this macro will update attrlen. You should use RTA_OK to check the
validity of the returned pointer.
RTA_LENGTH(len) returns the length which is required for len bytes of data plus the header.
RTA_SPACE(len) returns the amount of space which will be needed in a message with len bytes of data.
CONFORMING TO
These macros are nonstandard Linux extensions.
BUGS
This manual page is incomplete.
EXAMPLE
Creating a rtnetlink message to set the MTU of a device:
#include <linux/rtnetlink.h>
...
struct {
struct nlmsghdr nh;
struct ifinfomsg if;
char attrbuf[512];
} req;
struct rtattr *rta;
unsigned int mtu = 1000;
int rtnetlink_sk = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
memset(&req, 0, sizeof(req));
req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
req.nh.nlmsg_flags = NLM_F_REQUEST;
req.nh.nlmsg_type = RTM_NEWLINK;
req.if.ifi_family = AF_UNSPEC;
req.if.ifi_index = INTERFACE_INDEX;
req.if.ifi_change = 0xffffffff; /* ??? */
rta = (struct rtattr *)(((char *) &req) +
NLMSG_ALIGN(req.nh.nlmsg_len));
rta->rta_type = IFLA_MTU;
rta->rta_len = RTA_LENGTH(sizeof(unsigned int));
req.nh.nlmsg_len = NLMSG_ALIGN(req.nh.nlmsg_len) +
RTA_LENGTH(sizeof(mtu));
memcpy(RTA_DATA(rta), &mtu, sizeof(mtu));
send(rtnetlink_sk, &req, req.nh.nlmsg_len, 0);
SEE ALSO netlink(3), netlink(7), rtnetlink(7)COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
GNU 2014-09-06 RTNETLINK(3)