Discuss December 2008

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247 participants
257 discussions

Beginner - need suggestion to improve BACKUP script
by partha chowdhury 27 Dec '08

27 Dec '08

hallo list, I have recently started to learn shell scripting. Now i am trying to write a script to backup /etc and /var to my home dir in a separate folder and then backup the home dir to usb drive using rsync. My goal is when i will run the script it will output status to standard output in form of bold messages with time and simultaneously logs to another file in /root dir. I have labled the usb drive as "usb-mass-storage". the script runs fine according to my requirement. Now i need suggestion to improve the script further. Thank you. the script is as follows: > #!/bin/sh > if blkid |grep USB-Mass-Storage > then > if [ -d /media/backup ] > then > /bin/mount LABEL=USB-Mass-Storage /media/backup > echo "------------------------------------------------------------------------- " >> /root/backup.log > echo $(date) >> /root/backup.log > /etc/rc.d/init.d/named stop &> /dev/null > echo "CONFIGURATION backup starting "|tee -a /root/backup.log > /usr/bin/rsync -a --progress --delete /etc/ ~freedom/backup/etc/ >> /root/backup.log;echo "CONFIGURATION backup finished" |tee -a /root/backup.log;echo "VARIABLE backup starting"|tee -a /root/backup.log;/usr/bin/rsync -a --progress --delete --exclude=ftp/pub/media/ /var/ ~freedom/backup/var/ >> /root/backup.log; echo "VARIABLE backup finished" |tee -a /root/backup.log;/etc/rc.d/init.d/named start&> /dev/null > echo " Now we are going to backup $(date)" |tee -a /root/backup.log > /usr/bin/rsync -a --progress --delete /home/freedom/ /media/backup/ |tee -a /root/backup.log; echo "BACKUP FINISHED $(date)" |tee -a /root/backup.log > else > echo "$(date) DISTDIR does not exist" |tee -a /root/backup.log > fi > else > echo "$(date) USB drive not entered"|tee -a /root/backup.log > fi 1>the /root/backup.log is the log file 2>i stop the named service before starting backup as i run the named process in a chroooted environment and if i trey to manually backup /var with rsync i get :/var/named/chroot/proc/kcore: <file> has vanished ! 3>my home dir is /home/freedom 4>i exclude the /var/ftp/pub/media/ folder as it is just the copy of centos 5 dvd which i use as my local base repo.

3 4

Something to test in php 5.2
by Michael A. Peters 27 Dec '08

27 Dec '08

Since people are testing php 5.2 in the CentOS repo - here's a bug I found in my own build of 5.2 that probably is a general php bug - but is worth testing on the CentOS testing packages. If using imagefttext with a Postscript type 1 font - $lstring="©" . date("Y") . " My Real Name"; or $lstring=html_entity_decode("©", ENT_COMPAT, "UTF-8") . date("Y") . "My Real Name"; both result in a ' instead of a © when rendered on the image. Works fine with a TrueType font, only an issue with Type1 fonts. Well, I only tried the second (with html_entity) with a ttf font, but point is it doesn't do what it is suppose to do with ps fonts.

2 1

Installing RHEL5.3
by Alain PORTAL 27 Dec '08

27 Dec '08

Hi, As I can start X on Centos 5.2, can somebody explain me how to install RHEL 5.3 pre-release or give me a pointer that explain how to do? ftp://ftp.redhat.com/pub/redhat/linux/beta/RHEL5.3/ I should want to know if I'll can install Centos 5.3 ;-) Regards, Alain -- Les pages de manuel Linux en français http://manpagesfr.free.fr/

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Bash Script for Beginners! oh dear :'(
by James Bensley 27 Dec '08

27 Dec '08

Hey guys, I'm a bit of a beginner (understatement!) with shell scripting and seek help! I am setting up our new squid proxy. Its working a treat and squidGuard is the icing on the cake. But, I am trying to write a shell script to search through our black list category's for squidGuard and remove the parsed value; Scenario: /some/directory/where/blacklist/is/stored contains about 40-50 folders called, adult, gambling, banking, warez etc. There is a folder for each blocking category (and in each folder is two files, urls and domains, standard stuff for web filtering!) I have a script to search through /some/directory/where/blacklist/is/stored and look at each text file trying to find someblockedsite.com and remove it. This is as far as I have got: machine:/blacklistdir# sh ./find_files "blockedsite.com" find_files is as follows: #!/bin/bash rm -f ./found_files touch ./found_files find . -exec grep -q "$1" '{}' \; -print >> ./found_files i=1 while [ $i -le `wc -l ./found_files` ] ; do grep -iv $1 $2 > $2.new ####This is where I am stuck, I have put $2 but I want to be reading each line of text from found_files? rm $2 mv $2.new $2 done But I am totally stuck! My questions to this awesome list are: can someone help my with my script? And, if so, can you explain to me how you have achieved your solution? Thanks a lot for reading guys n gals its greatly appreciated. Regards, James. -----BEGIN GEEK CODE BLOCK----- Version: 3.1 GIT/MU/U dpu s: a--> C++>$ U+> L++> B-> P+> E?> W+++>$ N K W++ O M++>$ V- PS+++ PE++ Y+ PGP t 5 X+ R- tv+ b+> DI D+++ G+ e(+++++) h--(++) r++ z++ ------END GEEK CODE BLOCK------

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yum install audacity --enablerepo=*\rpmforge Error in Dependency Resolution
by JohnS 27 Dec '08

27 Dec '08

]# yum install audacity --enablerepo=*\rpmforge Was this not going to be fixed for dep resolution. I'm not on the rpmforge list and remember this issue from a while ago. 14:02:18 : Error in Dependency Resolution 14:02:18 : Missing Dependency: libwx_gtk2u_adv-2.6.so.0 is needed by package audacity Missing Dependency: libwx_gtk2u_xrc-2.6.so.0 is needed by package audacity Missing Dependency: libwx_gtk2u_html-2.6.so.0(WXU_2.6) is needed by package audacity Missing Dependency: libwx_gtk2u_html-2.6.so.0 is needed by package audacity Missing Dependency: libwx_baseu_net-2.6.so.0(WXU_2.6) is needed by package audacity Missing Dependency: libwx_baseu-2.6.so.0 is needed by package audacity Missing Dependency: libwx_gtk2u_qa-2.6.so.0 is needed by package audacity Missing Dependency: libwx_gtk2u_core-2.6.so.0(WXU_2.6) is needed by package audacity Missing Dependency: libwx_gtk2u_core-2.6.so.0(WXU_2.6.2) is needed by package audacity Missing Dependency: libwx_baseu-2.6.so.0(WXU_2.6) is needed by package audacity Missing Dependency: libwx_baseu_net-2.6.so.0 is needed by package audacity Missing Dependency: libwx_gtk2u_core-2.6.so.0 is needed by package audacity Missing Dependency: libwx_baseu_xml-2.6.so.0 is needed by package audacity -- ~/john OpenPGP Sig:BA91F079

2 4

Security advice, please
by Anne Wilson 27 Dec '08

27 Dec '08

My LAN is behind a Netgear router, which does NAT. On the CentOS server I have fail2ban running. This morning my router reported 3 different IPs attempting to send UDP packets to port 38950, Since each address is only seen 4-5 times, I presume that fail2ban took over after that. GRC reports that ports are stealthed (port 143 was open, but is now closed), but then: Unsolicited Packets: RECEIVED (FAILED) — Your system's personal security countermeasures unwisely attempted to probe us in response to our probes. While some users believe that "tracking down" the source of Internet probes is useful, experience indicates that there is little to gain and potentially much to lose. The wisest course of action is to simulate nonexistence — which your system has failed to do. Your counter-probes immediately reveal your system's presence and location on the Internet. So, two questions really. First, what should I be looking for on the router, to turn off this 'tracking down' activity? Then, I want to read from my own IMAP server when I'm away from home. Is there a better way than opening port 143? Anne

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Fasttrack Repo on CentOS 4
by Vandaman 26 Dec '08

26 Dec '08

A quick question on the fasttrack repo which is now up to date with upstream. Why is the fasttrack repo not in the main CentOS-Base.repo file but contrib which has never had anything is included in the main CentOS-Base.repo file? The goal of CentOS is to be binary-compatible with upstream so fasttrack is "more important" in this regard than contrib. Upsteam ships with the main channels as well as fasttrack. As CentOS includes the repos in one repo file rather than having separate files, this tradition should be considered for fasttrack as well. Regards, Vandaman.

2 2

Question on USB to CF device
by Jerry Geis 26 Dec '08

26 Dec '08

I have this USB to CF device I tried to plug in today. Below is dmesg output when I plug it in. I was hoping it would look just like a USB thumbdrive. Is there something special I would have to do to be able to read the USB to CF device? Looks like its trying to make it /dev/sdd but I continue to get the errors at the end. Thank, jerry Dec 26 08:41:53 devgeisquad kernel: usb 1-4: new high speed USB device using ehci_hcd and address 83 Dec 26 08:41:53 devgeisquad kernel: usb 1-4: configuration #1 chosen from 1 choice Dec 26 08:41:53 devgeisquad kernel: scsi37 : SCSI emulation for USB Mass Storage devices Dec 26 08:41:58 devgeisquad kernel: scsi 37:0:0:0: Direct-Access Generic- Multi-Card 1.00 PQ: 0 ANSI: 0 CCS Dec 26 08:41:58 devgeisquad kernel: usb 1-4: USB disconnect, address 83 Dec 26 08:41:58 devgeisquad kernel: sd 37:0:0:0: [sdd] READ CAPACITY failed Dec 26 08:41:58 devgeisquad kernel: sd 37:0:0:0: [sdd] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK Dec 26 08:41:58 devgeisquad kernel: sd 37:0:0:0: [sdd] Sense not available. Dec 26 08:41:58 devgeisquad kernel: sd 37:0:0:0: [sdd] Write Protect is off Dec 26 08:41:58 devgeisquad kernel: sd 37:0:0:0: [sdd] Assuming drive cache: write through Dec 26 08:41:58 devgeisquad kernel: sd 37:0:0:0: [sdd] Attached SCSI removable disk Dec 26 08:41:58 devgeisquad kernel: sd 37:0:0:0: Attached scsi generic sg3 type 0 Dec 26 08:41:59 devgeisquad kernel: usb 1-4: new high speed USB device using ehci_hcd and address 84 Dec 26 08:42:14 devgeisquad kernel: usb 1-4: device descriptor read/64, error -110 Dec 26 08:42:29 devgeisquad kernel: usb 1-4: device descriptor read/64, error -110 Dec 26 08:42:29 devgeisquad kernel: usb 1-4: new high speed USB device using ehci_hcd and address 85 Dec 26 08:42:44 devgeisquad kernel: usb 1-4: device descriptor read/64, error -110

1 0

saslauthd question and sendmail
by swilting 26 Dec '08

26 Dec '08

the commande [root @ r13 *** ~] # sasl2-shared-mechlist Available mechanisms: GSSAPI, ANONYMOUS CRAM-MD5, DIGEST-MD5, LOGIN, PLAIN, NTLM Library media: EXTERNAL, NTLM, PLAIN, LOGIN, DIGEST-MD5, CRAM-MD5, ANONYMOUS, GSSAPI [root @ r13151 ~] # indicates the presence of all options the customer smtp in the page http://www.sendmail.org/~ca/email/auth.html it indicates that you have to edit /etc/sysconfig/saslauthd it seems to me I have to try to change the option pam present in the file in plain login but after impossible to restart /sbin/service saslauthd restart is not working anymore my question is related Sendmail I try to configure I thank you for all your returns sl ps:Excuse my bad English I am French

2 1

Another security question
by Anne Wilson 26 Dec '08

26 Dec '08

I would like to be able to check my bank account while we are on holiday. I know the bank's site is encrypted from the start - the login page is https and Verisign-trust encrypted - but is there any risk in using public wireless networks for jobs like this? It sounds secure enough, but maybe I'm paranoid.... Anne

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Discuss December 2008