log to syslog
how to log something to syslog
logger This is my message to syslog
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activate root in ubuntu after install
After this you can run su.
sudo passwd root
running scheduled programs in linux
use crontab
Edit the current configuration for crontab with:
Normally we'd created bash script files located in /usr/local/bin and have them specified for execution within our crontab configuration.
Edit the current configuration for crontab with:
crontab -e
Normally we'd created bash script files located in /usr/local/bin and have them specified for execution within our crontab configuration.
Rename files by reordering existing data (regular expression capturing submatches)
Takes all files in a directory that end with .jpg and that have a filename with format DD_MM_YY-HHMM.jpg and renames them as YYMMDDHHMM.jpg
#alter the regex to suit your needs, each () will return a submatch my $regex = qr!(\d\d)[-](\d\d)[-](\d\d)[_](\d\d\d\d)!; while(<*.jpg>) { $oldname = $_; if ($oldname=~m/$regex/) { #$1,$2,etc are submatchs rename $oldname,$3.$2.$1.$4.".jpg"; } }
Protect .svn directories using htaccess
// block access to .svn dirs
// should be done server-wide if you can (another snippet)
// should be done server-wide if you can (another snippet)
<IfModule mod_rewrite.c> RewriteRule ^(.*/)?\.svn/ - [F,L] ErrorDocument 403 "Access Forbidden" </IfModule>
Ubuntu 7.10: bootstrap a Ruby on Rails stack
// get started with ubuntu 7.1
// e.g. on a new slice from http://slicehost.com !
// e.g. on a new slice from http://slicehost.com !
# 1) make yrself a user and stop being root # 2) main web stack + ruby sudo aptitude install -y make screen sudo aptitude install -y apache2 php5 mysql-server sudo aptitude install -y subversion postfix sudo aptitude install -y ruby1.8 ruby1.8-dev rubygems irb sudo aptitude install -y imagemagick librmagick-ruby1.8 librmagick-ruby-doc libfreetype6-dev xml-core # 3) gemz # rubygems appears to be broken as hell. # gem update --system does squat # had to manually d/l rubygems 1.0.1, ruby setup.rb wget http://rubyforge.org/frs/download.php/29548/rubygems-1.0.1.tgz tar xzvf rubygems-1.0.1.tgz cd rubygems-1.0.1 sudo ruby setup.rb sudo gem install rails mongrel merb map_by_method
[SAMBA] exclude file/directory from shared folder
// i have shared a directory and in this directory is one
// which i dont want to share! how can i exclude this?
// where /var/test/private can be a file or directory.
// which i dont want to share! how can i exclude this?
[myshare] path = /var/test veto files = /var/test/private
// where /var/test/private can be a file or directory.
Compressing a directory with rar on Linux
I've been struggling to get this to work for so long that when I finally got it going I had to throw it up here so I wouldn't lose it.
This will create a max compression (not taking into account dictionary sizes and the like) archive of the entire etc directory.
rar a -m5 -R output.rar /etc/
This will create a max compression (not taking into account dictionary sizes and the like) archive of the entire etc directory.
Attach a screen before chrooting into your linux from scratch minimal system
This snippet is not so much a snippet as a tip. It's goal is to make your Linux from Scratch experience easier by allowing you the freedom of being able to attach and detach to a screen session from your host computer. Of course you would go through the book and change the chroot command to suit your needs, but just bear in mind that the chroot command you will use may be different from the one I use.
By using screen, you can start a lengthy compile and then detach, go about your business and re-attach another time. I use it primarily when I have to start a compilation from one computer, then later from another machine located somewhere else. Combined with SSH, this can be real handy.
At any time, you can hit ctrl+a+d to detach. Then if you want to re-attach just type screen -r clfs and whamo, your right back where you left off.
Thanks again to ChrisS67 for helping me with my GCC problem (or me forgetting to install findutils) ;)
By using screen, you can start a lengthy compile and then detach, go about your business and re-attach another time. I use it primarily when I have to start a compilation from one computer, then later from another machine located somewhere else. Combined with SSH, this can be real handy.
desktop ~ # screen -S clfs desktop ~ # chroot "${CLFS}" /tools/bin/env -i \ > HOME=/root TERM="${TERM}" PS1='\u:\w\$ ' \ > PATH=/bin:/usr/bin:/sbin:/usr/sbin:/tools/bin \ > /tools/bin/bash --login +h root:/#
At any time, you can hit ctrl+a+d to detach. Then if you want to re-attach just type screen -r clfs and whamo, your right back where you left off.
Thanks again to ChrisS67 for helping me with my GCC problem (or me forgetting to install findutils) ;)
Mounting CIFS shares on Ubuntu with utf8 support
Just a simple reminder how to use the WD MyBook WE with Linux properly.
change
to read
I mount it manually with
sudo aptitude install smbfs sudo mkdir /media/sharename sudo vim /etc/nsswitch.conf
change
hosts: files dns
to read
hosts: files wins dns
sudo aptitude install winbind
I mount it manually with
sudo mount -t cifs //MyBookWorld/PUBLIC /media/shares/MyBook/PUBLIC -o username= "vasil",password="MyPassword",iocharset=utf8,uid=vasil,guid=vasil,rw,noperm
