não pode converter minha imagem por imagemagick em ubuntu 14.04 LTS

Question

Como redimensionar imagens facilmente?

Eu quero usar esse método no Ubuntu 14.04 LTS para converter minha imagem

Primeiro instale o imagemagick

sudo apt-get install imagemagick

Abra um terminal e execute este comando:

convert  -resize 50% source.png dest.jpg

Reduzirá o tamanho em 50%

Você também pode especificar o tamanho:

convert  -resize 1024X768  source.png dest.jpg

mas obteve esta saída:

$ convert -resize 40%   DSC_9702 copy.jpg dest.jpg
The program 'convert' can be found in the following packages:
 * imagemagick
 * graphicsmagick-imagemagick-compat
Try: sudo apt-get install <selected package>

$ sudo apt-get install imagemagick
[sudo] password for educ:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  imagemagick-common libfftw3-double3 libilmbase6 liblqr-1-0 libmagickcore5
  libmagickcore5-extra libmagickwand5 libnetpbm10 libopenexr6 netpbm
Suggested packages:
  imagemagick-doc autotrace curl enscript ffmpeg gimp gnuplot grads hp2xx
  html2ps libwmf-bin mplayer povray radiance texlive-base-bin transfig
  ufraw-batch libfftw3-bin libfftw3-dev
The following NEW packages will be installed:
  imagemagick imagemagick-common libfftw3-double3 libilmbase6 liblqr-1-0
  libmagickcore5 libmagickcore5-extra libmagickwand5 libnetpbm10 libopenexr6
  netpbm
0 upgraded, 11 newly installed, 0 to remove and 0 not upgraded.
Need to get 4,015 kB of archives. After this operation, 15.1 MB of additional disk space will be used. Do you want to continue? [Y/n] y
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main imagemagick-common all 8:6.7.7.10-6ubuntu3   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libfftw3-double3 i386 3.3.3-7ubuntu3   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libilmbase6 i386 1.0.1-6ubuntu1   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main liblqr-1-0 i386 0.4.1-2ubuntu1   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libmagickcore5 i386 8:6.7.7.10-6ubuntu3   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libmagickwand5 i386 8:6.7.7.10-6ubuntu3   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libopenexr6 i386 1.6.1-7ubuntu1   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libmagickcore5-extra i386 8:6.7.7.10-6ubuntu3   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main imagemagick i386 8:6.7.7.10-6ubuntu3   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libnetpbm10 i386 2:10.0-15ubuntu2   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main netpbm i386 2:10.0-15ubuntu2   Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/i/imagemagick/imagemagick-common_6.7.7.10-6ubuntu3_all.deb Could not resolve 'ma.archive.ubuntu.com' 
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/f/fftw3/libfftw3-double3_3.3.3-7ubuntu3_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/i/ilmbase/libilmbase6_1.0.1-6ubuntu1_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/libl/liblqr/liblqr-1-0_0.4.1-2ubuntu1_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/i/imagemagick/libmagickcore5_6.7.7.10-6ubuntu3_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/i/imagemagick/libmagickwand5_6.7.7.10-6ubuntu3_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/o/openexr/libopenexr6_1.6.1-7ubuntu1_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/i/imagemagick/libmagickcore5-extra_6.7.7.10-6ubuntu3_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/i/imagemagick/imagemagick_6.7.7.10-6ubuntu3_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/n/netpbm-free/libnetpbm10_10.0-15ubuntu2_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/n/netpbm-free/netpbm_10.0-15ubuntu2_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

$ sudo apt-get install imagemagick
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  imagemagick-common libfftw3-double3 libilmbase6 liblqr-1-0 libmagickcore5
  libmagickcore5-extra libmagickwand5 libnetpbm10 libopenexr6 netpbm
Suggested packages:
  imagemagick-doc autotrace curl enscript ffmpeg gimp gnuplot grads hp2xx
  html2ps libwmf-bin mplayer povray radiance texlive-base-bin transfig
  ufraw-batch libfftw3-bin libfftw3-dev
The following NEW packages will be installed:
  imagemagick imagemagick-common libfftw3-double3 libilmbase6 liblqr-1-0
  libmagickcore5 libmagickcore5-extra libmagickwand5 libnetpbm10 libopenexr6
  netpbm
0 upgraded, 11 newly installed, 0 to remove and 0 not upgraded.
Need to get 4,015 kB of archives. After this operation, 15.1 MB of additional disk space will be used. Do you want to continue? [Y/n] y
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main imagemagick-common all 8:6.7.7.10-6ubuntu3   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libfftw3-double3 i386 3.3.3-7ubuntu3   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libilmbase6 i386 1.0.1-6ubuntu1   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main liblqr-1-0 i386 0.4.1-2ubuntu1   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libmagickcore5 i386 8:6.7.7.10-6ubuntu3   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libmagickwand5 i386 8:6.7.7.10-6ubuntu3   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libopenexr6 i386 1.6.1-7ubuntu1   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libmagickcore5-extra i386 8:6.7.7.10-6ubuntu3   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main imagemagick i386 8:6.7.7.10-6ubuntu3   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main libnetpbm10 i386 2:10.0-15ubuntu2   Could not resolve 'ma.archive.ubuntu.com'
Err http://ma.archive.ubuntu.com/ubuntu/ trusty/main netpbm i386 2:10.0-15ubuntu2   Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/i/imagemagick/imagemagick-common_6.7.7.10-6ubuntu3_all.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/f/fftw3/libfftw3-double3_3.3.3-7ubuntu3_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/i/ilmbase/libilmbase6_1.0.1-6ubuntu1_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/libl/liblqr/liblqr-1-0_0.4.1-2ubuntu1_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/i/imagemagick/libmagickcore5_6.7.7.10-6ubuntu3_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/i/imagemagick/libmagickwand5_6.7.7.10-6ubuntu3_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/o/openexr/libopenexr6_1.6.1-7ubuntu1_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/i/imagemagick/libmagickcore5-extra_6.7.7.10-6ubuntu3_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/i/imagemagick/imagemagick_6.7.7.10-6ubuntu3_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/n/netpbm-free/libnetpbm10_10.0-15ubuntu2_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Failed to fetch http://ma.archive.ubuntu.com/ubuntu/pool/main/n/netpbm-free/netpbm_10.0-15ubuntu2_i386.deb Could not resolve 'ma.archive.ubuntu.com'
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

$ convert -resize 40%   DSC_9702 copy.jpg dest.jpg
The program 'convert' can be found in the following packages:
 * imagemagick
 * graphicsmagick-imagemagick-compat
Try: sudo apt-get install <selected package>

    

Answer 1

Eu acho que parece haver algo errado com a sua configuração de rede, no entanto, você ainda pode pingar o servidor de arquivamento com o seu nome de host, o que me deixa um pouco confuso ...

De qualquer forma, sugiro que você adicione servidores DNS alternativos (fornecidos pelo Google) por:

sudo sh -c "echo nameserver 8.8.8.8 >> /etc/resolvconf/resolv.conf.d/base"
sudo sh -c "echo nameserver 8.8.4.4 >> /etc/resolvconf/resolv.conf.d/base"

E faça suas alterações entrarem em vigor com:

sudo resolvconf -u

Depois disso, execute sudo apt-get update && sudo apt-get install imagemagick para instalar o pacote imagemagick. E você poderá usar o comando convert .

Explicação detalhada e instruções para configurar isso com o NetworkManager podem ser encontradas neste artigo: O que" sudo echo nameserver 8.8.8.8 > /etc/resolv.conf "faz?

Referência:

1. Servidor de nomes dns persistente para o Ubuntu 14.04
2. Como defino meu DNS Ubuntu 14.04?