Already given restart. Yesterday I installed two time Ubuntu 14.04 and
14.10.

No tips working for me. I am getting tired. :(


*Best Regards,*
*Syed Ziaul Habib*
ZEND CERTIFIED ENGINEER, OCA, MCTS, MS Office Expert
Senior Faculty, Education Department
IBCS-PRIMAX Software (BD) Ltd.
House# 51 | Road#10A | Dhanmondi R/A | Dhaka-1209
*Work:* +88-02-8110699, 9141876, 9143775
*Ext: 106Cell:* +88-01749 752 942 *Skype ID :* roobon7
*Fax:* +88-02-8125407 | *Email:* szha...@ibcs-primax.com
*website* : www.ibcs-primax.com

On 27 October 2014 10:13, Sazzad Hossain <sazzad...@gmail.com> wrote:

> I would suggest rebooting or restarting. It should solve it, I faced
> similar many times & it worked.
> Thanks
>
> Sazzad Hossain
>
> MBA (DU), CSCA™
>
> Certified Supply Chain Analyst
>
> On Mon, Oct 27, 2014 at 10:09 AM, Syed Ziaul Habib <roo...@gmail.com>
> wrote:
>
> > Sorry, same problem
> >
> > I logged out from my previous session.
> >
> > roobon@roobon-HP-550:~$ sudo apt-get update
> > [sudo] password for roobon:
> > E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource
> > temporarily unavailable)
> > E: Unable to lock directory /var/lib/apt/lists/
> > E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily
> > unavailable)
> > E: Unable to lock the administration directory (/var/lib/dpkg/), is
> another
> > process using it?
> > roobon@roobon-HP-550:~$
> >
> >
> >
> > *Best Regards,*
> > *Syed Ziaul Habib*
> > ZEND CERTIFIED ENGINEER, OCA, MCTS, MS Office Expert
> > Senior Faculty, Education Department
> > IBCS-PRIMAX Software (BD) Ltd.
> > House# 51 | Road#10A | Dhanmondi R/A | Dhaka-1209
> > *Work:* +88-02-8110699, 9141876, 9143775
> > *Ext: 106Cell:* +88-01749 752 942 *Skype ID :* roobon7
> > *Fax:* +88-02-8125407 | *Email:* szha...@ibcs-primax.com
> > *website* : www.ibcs-primax.com
> >
> > On 27 October 2014 10:05, M. Adnan Quaium <adnan.qua...@ubuntu-bd.org>
> > wrote:
> >
> > > please logout of current session, then login, and then start updating.
> > > hopefully it will work.
> > >
> > > M. Adnan Quaium | https://wiki.ubuntu.com/maqtanim
> > >
> > > On 27 October 2014 10:00, Syed Ziaul Habib <roo...@gmail.com> wrote:
> > >
> > > > After changing Ubuntu Software center to  Main server
> > > >
> > > >
> > > > roobon@roobon-HP-550:~$ sudo apt-get update
> > > > [sudo] password for roobon:
> > > > E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource
> > > > temporarily unavailable)
> > > > E: Unable to lock directory /var/lib/apt/lists/
> > > > E: Could not get lock /var/lib/dpkg/lock - open (11: Resource
> > temporarily
> > > > unavailable)
> > > > E: Unable to lock the administration directory (/var/lib/dpkg/), is
> > > another
> > > > process using it?
> > > >
> > > >
> > > >
> > > > *Best Regards,*
> > > > *Syed Ziaul Habib*
> > > > ZEND CERTIFIED ENGINEER, OCA, MCTS, MS Office Expert
> > > > Senior Faculty, Education Department
> > > > IBCS-PRIMAX Software (BD) Ltd.
> > > > House# 51 | Road#10A | Dhanmondi R/A | Dhaka-1209
> > > > *Work:* +88-02-8110699, 9141876, 9143775
> > > > *Ext: 106Cell:* +88-01749 752 942 *Skype ID :* roobon7
> > > > *Fax:* +88-02-8125407 | *Email:* szha...@ibcs-primax.com
> > > > *website* : www.ibcs-primax.com
> > > >
> > > > On 27 October 2014 09:43, Arafat Rahman <opurah...@gmail.com> wrote:
> > > >
> > > > > Roboon vai,
> > > > > You may try changing the download server from Ubuntu software
> center.
> > > > >
> > > > >
> > > > > All my best,
> > > > >
> > > > > *Arafat Rahman*
> > > > > Web Application Developer
> > > > > http://arafatbd.net
> > > > >
> > > > > On Mon, Oct 27, 2014 at 11:35 AM, Syed Ziaul Habib <
> roo...@gmail.com
> > >
> > > > > wrote:
> > > > >
> > > > > > roobon@roobon-HP-550:~$ sudo apt-get update
> > > > > > [sudo] password for roobon:
> > > > > > Ign http://security.ubuntu.com utopic-security InRelease
> > > > > > Hit http://security.ubuntu.com utopic-security Release.gpg
> > > > > > Ign http://bd.archive.ubuntu.com utopic InRelease
> > > > > > Hit http://security.ubuntu.com utopic-security Release
> > > > > > Ign http://bd.archive.ubuntu.com utopic-updates InRelease
> > > > > > Ign http://bd.archive.ubuntu.com utopic-backports InRelease
> > > > > > Hit http://bd.archive.ubuntu.com utopic Release.gpg
> > > > > > Hit http://bd.archive.ubuntu.com utopic-updates
> > > > > > Release.gpg
> > > > > > Get:1 http://bd.archive.ubuntu.com utopic-backports Release.gpg
> > [933
> > > > > > B]
> > > > > > Err http://security.ubuntu.com utopic-security/main Sources
> > > > > >   404  Not Found [IP: 91.189.91.23 80]
> > > > > > Hit http://bd.archive.ubuntu.com utopic Release
> > > > > > Err http://security.ubuntu.com utopic-security/restricted
> Sources
> > > > > >   404  Not Found [IP: 91.189.91.23 80]
> > > > > > Hit http://bd.archive.ubuntu.com utopic-updates Release
> > > > > > Err http://security.ubuntu.com utopic-security/universe Sources
> > > > > >   404  Not Found [IP: 91.189.91.23 80]
> > > > > > Err http://security.ubuntu.com utopic-security/multiverse
> Sources
> > > > > >   404  Not Found [IP: 91.189.91.23 80]
> > > > > > Err http://security.ubuntu.com utopic-security/main i386
> Packages
> > > > > >   404  Not Found [IP: 91.189.91.23 80]
> > > > > > Err http://security.ubuntu.com utopic-security/restricted i386
> > > > Packages
> > > > > >   404  Not Found [IP: 91.189.91.23 80]
> > > > > > Err http://security.ubuntu.com utopic-security/universe i386
> > > Packages
> > > > > >   404  Not Found [IP: 91.189.91.23 80]
> > > > > > Err http://security.ubuntu.com utopic-security/multiverse i386
> > > > Packages
> > > > > >   404  Not Found [IP: 91.189.91.23 80]
> > > > > > Hit http://security.ubuntu.com utopic-security/main
> Translation-en
> > > > > > Hit http://security.ubuntu.com utopic-security/multiverse
> > > > Translation-en
> > > > > > Hit http://security.ubuntu.com utopic-security/restricted
> > > > Translation-en
> > > > > > Hit http://security.ubuntu.com utopic-security/universe
> > > > > > Translation-en
> > > > > > Get:2 http://bd.archive.ubuntu.com utopic-backports Release
> [59.7
> > > > > > kB]
> > > > > > Err http://bd.archive.ubuntu.com utopic/main
> > > > > > Sources
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic/restricted
> > > > > > Sources
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic/universe
> > > > > > Sources
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic/multiverse
> > > > > > Sources
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic/main i386
> > > > > > Packages
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic/restricted i386
> > > > > > Packages
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic/universe i386
> > > > > > Packages
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic/multiverse i386
> > > > > > Packages
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-updates/main
> > > > > > Sources
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-updates/restricted
> > > > > > Sources
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-updates/universe
> > > > > > Sources
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-updates/multiverse
> > > > > > Sources
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-updates/main i386
> > > > > > Packages
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-updates/restricted i386
> > > > > > Packages
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-updates/universe i386
> > > > > > Packages
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-updates/multiverse i386
> > > > > > Packages
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-backports/main Sources
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-backports/restricted
> > Sources
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-backports/universe
> Sources
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-backports/multiverse
> > Sources
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-backports/main i386
> > Packages
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-backports/restricted
> i386
> > > > > Packages
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-backports/universe i386
> > > > Packages
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Err http://bd.archive.ubuntu.com utopic-backports/multiverse
> i386
> > > > > Packages
> > > > > >   404  Not Found [IP: 91.189.92.200 80]
> > > > > > Hit http://bd.archive.ubuntu.com utopic/main Translation-en
> > > > > > Hit http://bd.archive.ubuntu.com utopic/multiverse
> Translation-en
> > > > > > Hit http://bd.archive.ubuntu.com utopic/restricted
> > > > > > Translation-en
> > > > > > Hit http://bd.archive.ubuntu.com utopic/universe
> > > > > > Translation-en
> > > > > > Hit http://bd.archive.ubuntu.com utopic-updates/main
> > Translation-en
> > > > > > Hit http://bd.archive.ubuntu.com utopic-updates/multiverse
> > > > > > Translation-en
> > > > > > Hit http://bd.archive.ubuntu.com utopic-updates/restricted
> > > > > > Translation-en
> > > > > > Hit http://bd.archive.ubuntu.com utopic-updates/universe
> > > > > > Translation-en
> > > > > > Hit http://bd.archive.ubuntu.com utopic-backports/main
> > > > > > Translation-en
> > > > > > Hit http://bd.archive.ubuntu.com utopic-backports/multiverse
> > > > > > Translation-en
> > > > > > Hit http://bd.archive.ubuntu.com utopic-backports/restricted
> > > > > > Translation-en
> > > > > > Get:3 http://bd.archive.ubuntu.com utopic-backports/universe
> > > > > > Translation-en
> > > > > > [308 B]
> > > > > > Fetched 61.0 kB in 26s (2,332
> > > > > > B/s)
> > > > > > W: Failed to fetch
> > > > > >
> > > > >
> > > >
> > >
> >
> http://security.ubuntu.com/ubuntu/dists/utopic-security/main/source/Sources
> > > > > > 404  Not Found [IP: 91.189.91.23 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://security.ubuntu.com/ubuntu/dists/utopic-security/restricted/source/Sources
> > > > > > 404  Not Found [IP: 91.189.91.23 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://security.ubuntu.com/ubuntu/dists/utopic-security/universe/source/Sources
> > > > > > 404  Not Found [IP: 91.189.91.23 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://security.ubuntu.com/ubuntu/dists/utopic-security/multiverse/source/Sources
> > > > > > 404  Not Found [IP: 91.189.91.23 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://security.ubuntu.com/ubuntu/dists/utopic-security/main/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.91.23 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://security.ubuntu.com/ubuntu/dists/utopic-security/restricted/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.91.23 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://security.ubuntu.com/ubuntu/dists/utopic-security/universe/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.91.23 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://security.ubuntu.com/ubuntu/dists/utopic-security/multiverse/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.91.23 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > http://bd.archive.ubuntu.com/ubuntu/dists/utopic/main/source/Sources
> > > > > 404
> > > > > > Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic/restricted/source/Sources
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > >
> > http://bd.archive.ubuntu.com/ubuntu/dists/utopic/universe/source/Sources
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic/multiverse/source/Sources
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic/main/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic/restricted/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic/universe/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic/multiverse/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-updates/main/source/Sources
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-updates/restricted/source/Sources
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-updates/universe/source/Sources
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-updates/multiverse/source/Sources
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-updates/main/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-updates/restricted/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-updates/universe/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-updates/multiverse/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-backports/main/source/Sources
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-backports/restricted/source/Sources
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-backports/universe/source/Sources
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-backports/multiverse/source/Sources
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-backports/main/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-backports/restricted/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-backports/universe/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > W: Failed to fetch
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> http://bd.archive.ubuntu.com/ubuntu/dists/utopic-backports/multiverse/binary-i386/Packages
> > > > > > 404  Not Found [IP: 91.189.92.200 80]
> > > > > >
> > > > > > E: Some index files failed to download. They have been ignored,
> or
> > > old
> > > > > ones
> > > > > > used instead.
> > > > > >
> > > > > > Recently I have installed new version of Ubuntu 14.10. I can't
> > > install
> > > > > any
> > > > > > package.
> > > > > > Can you please give any solution
> > > > > >
> > > > > >
> > > > > >
> > > > > > *Best Regards,*
> > > > > > *Syed Ziaul Habib*
> > > > > > ZEND CERTIFIED ENGINEER, OCA, MCTS, MS Office Expert
> > > > > > Senior Faculty, Education Department
> > > > > > IBCS-PRIMAX Software (BD) Ltd.
> > > > > > House# 51 | Road#10A | Dhanmondi R/A | Dhaka-1209
> > > > > > *Work:* +88-02-8110699, 9141876, 9143775
> > > > > > *Ext: 106Cell:* +88-01749 752 942 *Skype ID :* roobon7
> > > > > > *Fax:* +88-02-8125407 | *Email:* szha...@ibcs-primax.com
> > > > > > *website* : www.ibcs-primax.com
> > > > > > --
> > > > > > Ubuntu Bangladesh
> > > > > > https://lists.ubuntu.com/mailman/listinfo/ubuntu-bd
> > > > > >
> > > > > --
> > > > > Ubuntu Bangladesh
> > > > > https://lists.ubuntu.com/mailman/listinfo/ubuntu-bd
> > > > >
> > > > --
> > > > Ubuntu Bangladesh
> > > > https://lists.ubuntu.com/mailman/listinfo/ubuntu-bd
> > > >
> > > --
> > > Ubuntu Bangladesh
> > > https://lists.ubuntu.com/mailman/listinfo/ubuntu-bd
> > >
> > --
> > Ubuntu Bangladesh
> > https://lists.ubuntu.com/mailman/listinfo/ubuntu-bd
> >
> --
> Ubuntu Bangladesh
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-bd
>
-- 
Ubuntu Bangladesh
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bd

Reply via email to