I Have an script like
./bang 1
./bang 2
./bang 3
./bang 4
[code]...
and i wanna execute him in groups of 3 , i mean he execute bang 1 , bang 2 and bang 3 after it finish the next 3 commands it will be executed and so on , in groups of 3.
I have a text file that currently has around 150 000 usernames in it. I need to somehow group them into smaller groups of 1000 and then add that value into the DB. for example user xzy group 1 (hopefully the groups will be digits incrementing)
[Code]....
how to search for 1000 then assign them group 1 and then 1001-1999 to group 2 etc.
language: C
OS: linux
I wrote a multithread program(approx 1000 thread have to run) and each thread has to parse a file(for each thread there is one file, ex:thread1 has to parse file1 and thread2 has to parse file2 like this....). I wrote "parse" program as follows. It is working well, if i create 50 threads. but if i run more than 200 thraeds Im getting doublefree corruption as follows:
Code:
*** glibc detected *** ./simulator: double free or corruption (fasttop): 0xb70007b0 ***
And some time I am getting parsing problem and error af follows:
Code:
powersetting.6607:1: parser error : Start tag expected, '<' not found (where powersetting.6607 is file name, when i check this file it is started with '<').
parse program as follows:
Code:
void parse_first(char* filename, int portnum, struct Poweroff *Powerptr1)
{
struct Poweroff *Powerptr;
Powerptr = Powerptr1;
[code]....
Since 2005 when DualCore CPUs came out, you need to create unique multithread algorithms for every particular program? Or you have patterns?
View 4 Replies View RelatedI wrote a multithread program(c++,gnu gcc). it contains a main program and plugins. some functions in plugins use sleep(). Using these functions in threads cause freezing program. in other word thread sleeps but dosn't wake. How can i use sleep() in my plugin functions without this problem?
View 3 Replies View RelatedI am going to use "pthread_setaffinity_np" to bind a thread to a specific core. My application has two threads. I have used mutex to assign a specific id to each thread and then bind that thread to a core different from another core. but it seems that the os assigns both thread to one core.What should I do to bind each thread to a specific core?
View 4 Replies View RelatedUrgent: on reboot, the Fedora 11 lower bars reach about 70-80%, then I get the message:
/dev/mapper/VolGroup-lv_root: (There are 22 inodes containing multiply-claimed blocks.)
File /home/burnie/.thumbnails/normal/[bunchofhexits].png (inode #15826, mod time Mon Nov 2 04:24:26 2009) has 13 multiply-claimed blocks, shared with 1 file:
[code]....
Just in case this is relevant, yesterday I spent several hours attempting (and failing) to build IcedTea in order to run a Java web service that required it. After the failure occurred, I exited Linux and went to Windows Vista to run the web service, and found that Vista cannot support 64-bit Firefox, so I rebooted to Linux, and ran make clean on the Iced Tea installation, which balked because a stamps directory could not be deleted because it was not empty; I followed this by make distclean which made the same complaint. So I manually deleted the files in the stamps subdirectory, ran make distclean "cleanly", and then rebooted to reach my current very unsatisfactory state.
does ubuntu 10.04 support multithread on mysql 32 bit?
View 8 Replies View RelatedI would like to know how do I print the line # in a script. My requirement is, I have a script which is about ~5000 lines long. If there are any errors happen I just exit. And I would like to add the line # of the script where the error happened.
View 3 Replies View Relatedsimple bash code:
Code:
#!/bin/bash
trap "echo 'you got me'" SIGINT SIGTERM # to trap ctrl+c
echo "Press ctrl+c during 5 sec loop"
for ((i=0;i<5;i++)); do
[Code]...
How come code behaves normally and stops when ctrl+c signal is caught and resumes, but after I use at least one timeout read in the code it looks like, if signal is caught again it doesn't pause the execution but skips the loop. If you remove -t (timeout) option from the read, both loops look the same!
I have a config file that contains:
my.config:
Code:
Now in my bash script, I want to get the output /home/user instead of $HOME once read. So far, I have managed to get the $HOME variable but I can't get it to echo the variable. All I get is the output $HOME.
Here is my parse_cmd script:
Code:
I have written quite a few separate bash & scripts and php scripts that up to now I have run from cron jobs. However I have to estimate how long each takes to run, before running the next and so it probably takes much longer than necessary to run them all. They have to run in order.
Now there are so many I am thinking it would be better to have a master bash script that would run one after the other, but I am not sure how to get the master script to wait before starting to run the next script. Is this possible and is there a command that will make the script wait between bash and php scripts , for them to finish, before running the next?
I would like to get the filename (without extension) and the extension separately. The best solution I found so far is:
Let FILE="thefilenameofsomefilesfor_instance.txt"
Code:
NAME=`echo "$FILE" | cut -d'.' -f1`
EXTENSION=`echo "$FILE" | cut -d'.' -f2`
I think it would be better to count the len and remove 3 chars to right to get the extension, but it can be macintosh filenames with have 4 chars for extensions.
how to isolate users from a group ie accounting and force them to change their password upon login
View 1 Replies View RelatedIs there a Linux system call that can be used to get the group name from the GID returned by stat()? I realize that I could parse /etc/groups (if my user had sufficient permissions).
View 3 Replies View Relatedi was wondering if someone could help me figure out a script for global variables i'm trying to set for a group of command line arguments:
basically i'm trying to set: if $# = 3 then i want to search for each all string $1 $2 $3
if $# = 4
then i want to search for each all string $1 $2 $3 $4
I would like to create a bash script that creates a single group from all users in other groups.
I've been at it most of the day, and I think I'm making it too complicated. I have about 100 lines of code, and it's still now working the way I would like. I'm starting to trip over my own feet with the amount of if statements and variables.
I have built a database driven web application that has a user and group system that works in a similiar way that Linux handles user access. Breif explanation: A users can access various resources, the resources are assigned to a single group and users can have many groups.
Users
Code:
id name
-- -------
1 RedRanger
2 GreenRanger
3 BlueRanger
[code]....
Lets say that RedRanger needs to be denied access to resource a if I remove him from group 33 he can no longer access b or c which is no good. The only alternative is to change a's group and add everyone else to the new group, this isn't so bad for 3 users, but what about 3,000?
I'm writing a PHP script, and I need a top 10 result from a mysql query.I've tryed like this:select IP,sum(download) from traf group by IP order by ASC limit 0,10and my sql returnsmysql> select IP,sum(download) from traf group by IP order by ASC limit 0, 10;ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'ASC limit 0, 10' at line 1As I red through Google this is not quite supported by mysql, so is there another way to do this?
View 5 Replies View RelatedI have one script that goes through some IPs:
###############################3
#/usr/bin/sh
# This is a script to copy files from one host to a group of
[code]....
How can I create a user group that restricts Internet privileges to only members in the group, then I will assigns certain applications to join the group for access to the Internet.
For example, I want only group net to have access to the Internet. Group net is then connected to:
Code:
So far, I am using the gnome group policy manager that is standard with ubuntu but Its not working. It is possible that im misdirected and that I should use a firewall instead?
What functions are available on linux for a c++ program to determine if the current user is a member of a specific user group?
View 3 Replies View Relatedi want secondary users can able to change the files permissions of primary group?user MAC is having www as a primary and httpd as secondary group. But he want to change the file permissions (chmod) httpd group files. Is it possible or not? I think its not possible. If it`s possible then let me know how?
View 3 Replies View RelatedI've been tasked with fixing a Red Hat system that dies with a kernel panic during the boot stage:
Code:
EXT3-fserror (dev sda1): ext3_check_descriptors: Inode bitmap for group 4 not in group (block 67239937)!
EXT3-fs: group descriptors corrupted!
mount: error mounting /dev/root on /sysroot as ext3: Invalid argument
I can boot into a Rescue CD, but I'm a bit out of my element because I don't use EXT3 myself, and I've never had to repair a corrupted file system before.
I have a group (GROUP) with a number of users. I recently added a new user (NEW). NEW is able to read but not write group files, whereas all the other users in the group can read and write to the group files. The permissions for the group files indicate that all members of group should have write permission -rwxrwxr-x
/etc/group indicates that NEW is a member of GROUP
...
GROUP:x:501:GROUP,OLD,OLD2,OLD3,OLD4,....,NEW
[code]....
Don't know if it matters, but both OLD and NEW write to the GROUP files over an internet connection. why NEW can't write to GROUP files? Is there a maximum number of members in a group that I might have exceeded?
I am trying to scan a website for http references (links) with this script:
Code:
from urllib import urlopen
import re
current_site = urlopen("http://en.wikipedia.org/wiki/").read()
search = re.search('href="[a-zA-Z0-9]"', current_site)
[code]....
I get the following error message:
Code: Traceback (most recent call last): File "C:UsersadminDesktopcrawler.py", line 8, in <mo print search.group(0) AttributeError: 'NoneType' object has no attribute 'group' I have googled the error
I need to rename the resulted searched files from a loopI have the following code:
find . -name DOC* | while read i
do
find $i -type f -name '*.txt'
done
basically, I am searching for all txt files inside any folder starting with DOC name.this code is working fine with me.I need to rename those .txt files to .txtOLDOS: Ubuntu 10.4Bash shell
Mount of filesystem failed. A maintenance shell will now be started CONTROL-D will terminate this shell and retry. groups: cannot find name for group ID 0 root@Sergioc-desktop:"#
View 2 Replies View RelatedI need to create a group that has the same permissions as the users group. Can I have the new group be a member of the "users" group to inherit its permissions?
View 4 Replies View RelatedI have a number of users, categorised into various groups. I would like one of those groups ("developers") to be in the wheel group as well. I don't want to just copy the people from the developers group into wheel, because then when that group changes I'll have to change it in two places. Is there a way to specify that anyone in developers is in wheel, and have that be dynamic?
View 7 Replies View Related