Hi Arun, 1. Is it CentOS 5.2? 2. Also disable CentOS plus repo by doing enable =0 in /etc/yum.repo/CentOSBase.repo, make sue you don't disable for CentOS & it is enable 3. Can you please copy above file from working system? 4. Can you now browse through lynx (Linux text browser) ? Thanks : Regards Sent from my IPhone > hey, iam extremly sorry for giving u trouble, > as u said i set the environment.... > this is the outcome after that > [BTIS@WORKSTATION3 ~]$ env | grep -i http_proxy > http_proxy=http://asomavarapu@xxxxxxxxxxxxx:dbsa121@10.100.15.3:8080 > HTTP_PROXY=http://asomavarapu@xxxxxxxxxxxxx:dbsa121@10.100.15.3:8080 > [BTIS@WORKSTATION3 ~]$ > > and this is the file of .bash_profile that i edited > > # .bash_profile > > # Get the aliases and functions > if [ -f ~/.bashrc ]; then > . ~/.bashrc > fi > > # User specific environment and startup programs > > PATH=$PATH:$HOME/bin > > export PATH > > export > http_proxy="http://asomavarapu@xxxxxxxxxxxxx:dbsa121@10.100.15.3:8080 > " > export > HTTP_PROXY="http://asomavarapu@xxxxxxxxxxxxx:dbsa121@10.100.15.3:8080 > " > > then i tried the command yum check-updates ,then this is the outcome > > [BTIS@WORKSTATION3 ~]$ yum check-update > Loaded plugins: fastestmirror, refresh-packagekit > Could not retrieve mirrorlist > http://mirrorlist.centos.org/?release=6&arch=i386&repo=os error was > 14: PYCURL ERROR 22 - "The requested URL returned error: 407" > Could not retrieve mirrorlist > http://mirrorlist.centos.org/?release=6&arch=i386&repo=centosplus error > was > 14: PYCURL ERROR 22 - "The requested URL returned error: 407" > Could not retrieve mirrorlist > http://mirrorlist.centos.org/?release=6&arch=i386&repo=extras error was > 14: PYCURL ERROR 22 - "The requested URL returned error: 407" > http://dl.google.com/linux/chrome/rpm/stable/i386/repodata/repomd.xml: > [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 407" > Trying other mirror. > Error: Cannot retrieve repository metadata (repomd.xml) for repository: > google-chrome. Please verify its path and try again > [BTIS@WORKSTATION3 ~]$ > > On Tue, Mar 27, 2012 at 3:39 PM, Prabhpal S. Mavi < > prabhpal@xxxxxxxxxxxxxxxxxxxx> wrote: > >> Hi Arun, >> >> Please understand and do as Johnny advised, it will fix your problem. >> Thanks >> > On 03/27/2012 03:47 AM, arun kumar wrote: >> >> sorry for not mentioning before that iam new to linux >> >> >> >> i have full access to internet, this is an educational institution, >> >> every >> >> one have there seperate username and pasword for login... >> >> so i used the my username and password in the yum.conf file.. >> >> >> >> i tried from GUI also like >> >> >> >> system->Administration-> software update ,then i got >> the >> >> folowing warning and error >> >> >> >> Software Update Viewer is running as a privileged user >> >> Package management applications are security sensitive. >> >> Running graphical applications as a privileged user should be avoided >> >> for >> >> security reasons. >> >> >> >> problem connecting to software source >> >> >> >> i also tried >> >> system->Administration->Add/Remove software >> >> >> >> iam not understanding what else to try >> > >> > <snip> >> > >> > If you do not have the Environment variable set for http_proxy, then >> > curl will not work. This seems like your problem to me. >> > >> > To see if you have http_proxy set as an environment variable, use this >> > command: >> > >> > env | grep -i http_proxy >> > >> > You need to check the above variable for both your "root user" and >> your >> > "local user" (local user's variables would be used if you are running >> > yum with sudo or su root ... root user would be used if you did "su - >> > root" or logged in directly as root. >> > >> > If the result is in caps, like this: >> > >> > HTTP_PROXY=http://my_username:mypassword@10.101.16.4:8080 >> > >> > Then curl might have an issue, so also add it in lower case like this: >> > >> > http_proxy="http://my_username:mypassword@10.101.16.4:8080" >> > >> > So, If you do not have a lower case "http_proxy=", then you would set >> it >> > in your root's ".bash_profile" file and your local user's >> > ".bash_profile" file. This is the line you would add to both users >> > .bash_profile: >> > >> > export http_proxy="http://my_username:mypassword@10.101.16.4:8080" >> > >> > After making the change, log out and back in to have the variables >> take >> > effect and then check them again with the grep command above ... >> > >> > Once you have the correct lower case variable set for "http_proxy=" >> for >> > both your normal local user and for root, you should be able to use >> yum >> > and curl. >> > >> > <snip> >> > >> >>> If the proxy server requires a username and password, add these to >> the >> >>> URL. To include the username |yum-user| and the password |qwerty|, >> add >> >>> these settings: >> >>> >> >>> |# The Web proxy server, with the username and password for this >> >>> account >> >>> http_proxy="http://yum-user:qwerty@xxxxxxxxxxxxxxxxxxxx:3128" >> >>> export http_proxy| >> >>> >> >>> *Example 5. Profile Settings for a Secured Proxy Server* >> >>> >> >>> [Note] The |http_proxy| Environment Variable >> >>> >> >>> The |http_proxy| environment variable is also used by |curl| and >> other >> >>> utilities. Although |yum| itself may use |http_proxy| in either >> >>> upper-case or lower-case, |curl| requires the name of the variable >> to >> >>> be >> >>> in lower-case. >> >>> >> > >> > >> > _______________________________________________ >> > CentOS mailing list >> > CentOS@xxxxxxxxxx >> > http://lists.centos.org/mailman/listinfo/centos >> > >> >> >> Thanks / Regards >> Prabhpal S. Mavi >> Email: prabhpal@xxxxxxxxxxxxxxxxxxxx >> Sent Through .Net Domain From iPhone >> >> _______________________________________________ >> CentOS mailing list >> CentOS@xxxxxxxxxx >> http://lists.centos.org/mailman/listinfo/centos >> > > > > -- > Arun Kumar Somavarapu > Project-JRF > Dr. Prasanna's lab > TMC, ACTREC > Navi Mumbai-410210 > _______________________________________________ > CentOS mailing list > CentOS@xxxxxxxxxx > http://lists.centos.org/mailman/listinfo/centos > Thanks / Regards Prabhpal S. Mavi Email: prabhpal@xxxxxxxxxxxxxxxxxxxx Sent Through .Net Domain From iPhone _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos