I was trying to use the grep command with -e option to test some regular expressions with it but to surprise not all the meta characters were being recognized by the grep engine, how ever egrep works perfectly fine.
For example : The following egrp command works fine:
dhclient does not strip or escape shell meta-characters
Summary: dhclient doesn't strip or escape certain shell meta-characters in dhcpd responses, allowing a rogue server or party with with escalated privileges on the server to cause remote code execution on the client.
CVE:
ISC dhclient did not strip or escape certain shell meta-characters in responses from the dhcp server (like hostname) before passing the responses on to dhclient-script. Depending on the script and OS, this can result in execution of exploit code on the client.
CVSS Score:
For more information on CVSS scores, visit [url]
Workarounds:
On SUSE systems, it is possible to disable hostname update by setting DHCLIENT_SET_HOSTNAME="no" in /etc/sysconfig/network/dhcp.
Other systems may add following line to dhclient-script at the beginning of the set_hostname() function:
In environments where filters/acls can be put into place to limit clients to accessing only legitimate dhcp servers, this will protect clients from rogue dhcp servers deliberately trying to exploit this bug.
However, this will not protect from compromised servers.
Active exploits:
Solution:
Upgrade to 3.1-ESV-R1, 4.1-ESV-R2 or 4.2.1-P1. [url]
No patch is available for 4.0.x as it is EOL. Anyone running 4.1.x should upgrade to 4.1-ESV-R2.
Acknowledgments:
Revisions:
I need to search for the following pattern with GREP in a text file:
So I tried already:
But none of those works...I think probably because GREP doens't like the special character > in the middle of the serach pattern.
At the end I just need to now if GREP found the pattern in the file or not, so it should give me a 0 or a 1 back, once I check the value of the variable "?" after using the grep command.
I have on my desktop around five java files. I also created a java file in directory Viti, located in desktop.
Since all java files contain string "class", I practice my usage of grep with the following:
And this works fine. However, when I type the following:
I expect to be shown the file that's located in my Viti directory, too, but it won't show it.
I tried to tag late onto a question similar to mine on stackoverflow (Find Non-UTF8 Filenames on Linux File System) to elicit further replies, with no luck so far, so here goes again... I have the same problem as the OP in the link above and convmv is a great tool to fix one's own filesystem. My question is therefore academic, but I find it unsatisfactory (in fact I can't believe) that 'find' is not able to find non standard ascii characters.
Is there anyone out there that would know what combination of options to use to find filenames that contain non standard characters on what seems to be a unicode FS, in my case the characters seem to be 8bits extended ascii rather than unicode, the files come from a Windows machine (iso-8859-1) and I regularly need to fetch them. I'd love to see how find and/or grep can do the same as convmv.
[Code]....
After upgrading to Natty, my Alt/Win meta key option is no longer working.
I'm using System Settings -> Keyboard -> Layouts -> Options -> Alt/Win key behavior and selecting "Meta is mapped to Win keys".
However the Win key still just pops up the files-and-folders window, and meta is not there.
This worked fine in 10.10. Need this with Emacs...
How to grep a string like "ab?c12345678" where 3rd character is unknown, while other characters are known.
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Apparently, either I don't understand grub2 at all or my kernel doesn't like me very much. I put the option in grub.cfg like so:
However, it appears that the kernel, for whatever reason, is either not being given this boot option or it's not interpreting it correctly. When I run lspci -vv I get this for my r8169 ethernet card:
The relevant section is LnkCtl: ASPM L0s L1 Enabled; indicating that ASPM is still on.
I know grep can search recursively (ie through all subdirectories to the bottom of the directory tree), but is it possible to ask grep to only search say, 3 levels down? That means the current directory, any directories in the current directory, and within any directories within those?
View 1 Replies View RelatedWhile modifying the definition of my PS1, I saw that "[" and "]" markers should be added to help bash to compute the right display lenght. Many exemples on the web do not use them or even mention them.I searched for a solution to add them automatically, like with sed, but I didn't find any example.Are they still needed and is there a recommandation not to use sed to define PS1?
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I can use grep to leave only the lines that have Chinese in them, but this still leaves a lot of non-Chinese stuff on those lines. Does anyone know how I could actually remove everything that isn't Chinese?
I need to kind of grep within grep. My input file would be something like:
[Code]....
and I need to find the first occurrence of hello before MY PATTERN (hello 9008 in this case), so the output should be:
[Code]....
I have my OpenSuse 11.1 box set up with utf-8, however, every time I try to open a file with utf-8 characters with vi it can't handle those characters properly.
View 6 Replies View RelatedI am trying to get my DVD to view on my Dell D610 laptop running Fedora 14 LXDE. Error messages:
Xine engine log console:
lirc: cannot initialise - disabling remote control
lirc: maybe lircd isn't running or you can't connect to the socket?
[code]....
I have just changed my web pages mostly to .shtml to take advantage of ssi.Now, when I go to my website, it gives an "index of /" page instead of showing the .shtml files.I have read in many places that .shtml files have to be specifically set up to be recognized as index files, but I cannot for the life of me get it to work or even to understand where I'm supposed to put all of the configuration stuff.I need to know what to change to make the apache 2 parse .shtml files for ssi and also to make apache check for .shtml files as an index file.
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View 1 Replies View RelatedI am attempting to stand up a new server Red Hat EL6 with Bugzilla-4.0 and everything is working expect Virtual Host. By defualt Bugzilla looks for SetEnv PROJECT (variable) in the /etc/httpd/conf/httpd.conf file. I followed the given instructions to place SetEnv PROJECT (variable) under <VirtualHost> however bugzilla doesn't recognize that it is there. When I put SetEnv PROJECT outside of <VirtualHost> then it becomes the default for ALL my different virtual host instead of using what is inside the <VirtualHost> section.
Here is the NameVirtualHost section of my httpd.conf file
NameVirtualHost *:443
SetEnv PROJECT UIDPMO
<VirtualHost 140.188.65.31:443>
[code]....
PS: Here is what Bugzilla 4.0.1 guide says to do: 2.4. Multiple Bugzilla databases with a single installation The previous instructions referred to a standard installation, with one unique Bugzilla database. However, you may want to host several distinct installations, without having several copies of the code. This is possible by using the PROJECT environment variable. When accessed, Bugzilla checks for the existence of this variable, and if present, uses its value to check for an alternative configuration file named localconfig.<PROJECT> in the same location as the default one (localconfig). It also checks for customized templates in a directory named <PROJECT> in the same location as the default one (template/<langcode>). By default this is template/en/default so PROJECT's templates would be located at template/en/PROJECT.
To set up an alternate installation, just export PROJECT=foo before running checksetup.pl for the first time. It will result in a file called localconfig.foo instead of localconfig. Edit this file as described above, with reference to a new database, and re-run checksetup.pl to populate it. That's all. Now you have to configure the web server to pass this environment variable when accessed via an alternate URL, such as virtual host for instance. The following is an example of how you could do it in Apache, other Webservers may differ.
<VirtualHost 212.85.153.228:80>
ServerName foo.bar.baz
SetEnv PROJECT foo
Alias /bugzilla /var/www/bugzilla
</VirtualHost>
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<VirtualHost_default_443>
SetEnv PROJECT PDS
Save the file, restarted Apache and everything worked as expected. Although I did include the NameVirtualHost section in /etc/httpd/conf/httpd.conf I don't think it made a difference.
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After one of latest update I have problem with meta keys (like shift, ctrl and alt) in KDE. When I press one of this keys, it sometimes stays active after release and deactivates only after I press it again. It's annoying especially while I'm writing some code (php or html) and meta keys randomly stays active after release.
xorg.conf:
Code:
i would change the tag it applies then it reverts i have even edited them with easy tag it appears to keep but rhythmbox does not register the change and it revers if i change it there aside from re-encoding them is there a way to change the tag on them
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