Raspberry Pi のスクリーンショット

Rasbperry Pi 2 では KSnapshot を使っています。221 MB と、ちょっと容量が大きくはありますが、デスクトップ上で使えるので便利です。

Raspberry Pi Zero にも入れてみましたが、ちょっと動作が重たい感じがするので、ラズパイゼロではScrot を使うことにしました。

インストールの経緯を記録しておきます。

KSnapshot のインストール

sudo apt-get install ksnapshot

1	sudo apt-get install ksnapshot

インストールすると、メニューに、「Graphics」という項目が追加されて、そこに「KSnapshot」が入ってくるのですが、これが何故か、最初出てこないんですよね。

何度か reboot したのですがそれでも出てこず・・・

なのでインストール後に、下記を試しました。

sudo apt-get update

1	sudo apt-get update

して、

sudo apt-get upgrade

1	sudo apt-get upgrade

してる最中に、いつの間にか出てきました。

Scrot のインストール

ラズパイゼロでは KSnapshot がちょっと重たい感じがしたので、Scrotを使ってみることにしました。

sudo apt-get install scrot

1	sudo apt-get install scrot

これはインストールがあっという間！

scrot

scrot

コマンドでスクリーンショットを撮るのですが、SSH経由では

giblib error: Can't open X display. It *is* running, yeah?

1	giblib error: Can't open X display. It is running, yeah?

とエラーが出てしまい、ラズパイ本体側からやらないとダメでした。

こちらもディレイが使えます。

scrot -d 5

1	scrot -d 5

と指定すると、5秒後にスクリーンショットが撮れます。

ファイルは、カレントディレクトリに保存されていきます。

画像の比較

上記のスクリーンショットは、それぞれ、KSnapshot、Scrot で撮ったものです。比較すると、KSnapshot の方が色味が綺麗な感じがしますね。

KSnapshot をアンインストール

ラズパイゼロは軽量化のため Scrot で行こう！ということで、KSnapshotはアンインストール。

sudo apt-get --purge remove ksnapshot

1	sudo apt-get --purge remove ksnapshot

ここでちょっと不思議に思ったのが、インストール時には221MBだったのが、アンインストール時には475KBしか空かない？

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  docbook-xml docbook-xsl kate-data katepart kde-runtime kde-runtime-data kdelibs-bin
  kdelibs5-data kdelibs5-plugins kdoctools liba52-0.7.4 libattica0.4 libbasicusageenvironment0
  libcddb2 libdbusmenu-qt2 libdlrestrictions1 libdvbpsi9 libebml4 libexiv2-13 libfam0
  libfreerdp-cache1.1 libfreerdp-client1.1 libfreerdp-codec1.1 libfreerdp-common1.1.0
  libfreerdp-core1.1 libfreerdp-crypto1.1 libfreerdp-gdi1.1 libfreerdp-locale1.1
  libfreerdp-primitives1.1 libfreerdp-rail1.1 libfreerdp-utils1.1 libgpgme++2 libgroupsock1
  libiodbc2 libiso9660-8 libkactivities-bin libkactivities-models1 libkactivities6
  libkatepartinterfaces4 libkcmutils4 libkde3support4 libkdeclarative5 libkdecore5 libkdesu5
  libkdeui5 libkdewebkit5 libkdnssd4 libkemoticons4 libkfile4 libkhtml5 libkio5 libkipi-data
  libkipi11 libkjsapi4 libkjsembed4 libkmediaplayer4 libknewstuff3-4 libknotifyconfig4 libkntlm4
  libkparts4 libkpty4 libkrosscore4 libktexteditor4 libkxmlrpcclient4 liblircclient0
  liblivemedia23 liblua5.2-0 libmatroska6 libmpcdec6 libmpeg2-4 libmysqlclient18 libnepomuk4
  libnepomukcore4 libnepomukquery4a libnepomukutils4 libnl-route-3-200 libntrack-qt4-1 libntrack0
  libphonon4 libplasma3 libpolkit-qt-1-1 libpostproc52 libproxy-tools libpulse-mainloop-glib0
  libqca2 libqt4-declarative libqt4-designer libqt4-opengl libqt4-qt3support libqt4-script
  libqt4-sql libqt4-sql-mysql libqt4-svg libresid-builder0c2a libshine3 libsidplay2 libsolid4
  libsoprano4 libssh-gcrypt-4 libstreamanalyzer0 libstreams0 libthreadweaver4 libtwolame0
  libupnp6 libusageenvironment1 libutempter0 libva-drm1 libva-x11-1 libvcdinfo0 libvlc5
  libvlccore8 libvncclient0 libwinpr-crt0.1 libwinpr-crypto0.1 libwinpr-dsparse0.1
  libwinpr-environment0.1 libwinpr-file0.1 libwinpr-handle0.1 libwinpr-heap0.1 libwinpr-input0.1
  libwinpr-interlocked0.1 libwinpr-library0.1 libwinpr-path0.1 libwinpr-pool0.1
  libwinpr-registry0.1 libwinpr-rpc0.1 libwinpr-sspi0.1 libwinpr-synch0.1 libwinpr-sysinfo0.1
  libwinpr-thread0.1 libwinpr-utils0.1 libxcb-composite0 libxcb-keysyms1 libxcb-randr0 libxcb-xv0
  libxml2-utils libzvbi-common libzvbi0 mysql-common nepomuk-core-data ntrack-module-libnl-0
  phonon phonon-backend-vlc plasma-scriptengine-javascript sgml-data soprano-daemon vlc vlc-data
  vlc-nox vlc-plugin-notify vlc-plugin-pulse vlc-plugin-samba
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
  ksnapshot*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 475 kB disk space will be freed.
Do you want to continue? [Y/n] Y

Reading package lists... Done

Building dependency tree

Reading state information... Done

The following packages were automatically installed and are no longer required:

docbook-xml docbook-xsl kate-data katepart kde-runtime kde-runtime-data kdelibs-bin

kdelibs5-data kdelibs5-plugins kdoctools liba52-0.7.4 libattica0.4 libbasicusageenvironment0

libcddb2 libdbusmenu-qt2 libdlrestrictions1 libdvbpsi9 libebml4 libexiv2-13 libfam0

libfreerdp-cache1.1 libfreerdp-client1.1 libfreerdp-codec1.1 libfreerdp-common1.1.0

libfreerdp-core1.1 libfreerdp-crypto1.1 libfreerdp-gdi1.1 libfreerdp-locale1.1

libfreerdp-primitives1.1 libfreerdp-rail1.1 libfreerdp-utils1.1 libgpgme++2 libgroupsock1

libiodbc2 libiso9660-8 libkactivities-bin libkactivities-models1 libkactivities6

libkatepartinterfaces4 libkcmutils4 libkde3support4 libkdeclarative5 libkdecore5 libkdesu5

libkdeui5 libkdewebkit5 libkdnssd4 libkemoticons4 libkfile4 libkhtml5 libkio5 libkipi-data

libkipi11 libkjsapi4 libkjsembed4 libkmediaplayer4 libknewstuff3-4 libknotifyconfig4 libkntlm4

libkparts4 libkpty4 libkrosscore4 libktexteditor4 libkxmlrpcclient4 liblircclient0

liblivemedia23 liblua5.2-0 libmatroska6 libmpcdec6 libmpeg2-4 libmysqlclient18 libnepomuk4

libnepomukcore4 libnepomukquery4a libnepomukutils4 libnl-route-3-200 libntrack-qt4-1 libntrack0

libphonon4 libplasma3 libpolkit-qt-1-1 libpostproc52 libproxy-tools libpulse-mainloop-glib0

libqca2 libqt4-declarative libqt4-designer libqt4-opengl libqt4-qt3support libqt4-script

libqt4-sql libqt4-sql-mysql libqt4-svg libresid-builder0c2a libshine3 libsidplay2 libsolid4

libsoprano4 libssh-gcrypt-4 libstreamanalyzer0 libstreams0 libthreadweaver4 libtwolame0

libupnp6 libusageenvironment1 libutempter0 libva-drm1 libva-x11-1 libvcdinfo0 libvlc5

libvlccore8 libvncclient0 libwinpr-crt0.1 libwinpr-crypto0.1 libwinpr-dsparse0.1

libwinpr-environment0.1 libwinpr-file0.1 libwinpr-handle0.1 libwinpr-heap0.1 libwinpr-input0.1

libwinpr-interlocked0.1 libwinpr-library0.1 libwinpr-path0.1 libwinpr-pool0.1

libwinpr-registry0.1 libwinpr-rpc0.1 libwinpr-sspi0.1 libwinpr-synch0.1 libwinpr-sysinfo0.1

libwinpr-thread0.1 libwinpr-utils0.1 libxcb-composite0 libxcb-keysyms1 libxcb-randr0 libxcb-xv0

libxml2-utils libzvbi-common libzvbi0 mysql-common nepomuk-core-data ntrack-module-libnl-0

phonon phonon-backend-vlc plasma-scriptengine-javascript sgml-data soprano-daemon vlc vlc-data

vlc-nox vlc-plugin-notify vlc-plugin-pulse vlc-plugin-samba

Use 'apt-get autoremove' to remove them.

The following packages will be REMOVED:

ksnapshot*

0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.

After this operation, 475 kB disk space will be freed.

Do you want to continue? [Y/n] Y

インストール時のメッセージを再度確かめてみました。Ksnapshot はこんなにいっぱい入ってるのかー。

The following extra packages will be installed:
  docbook-xml docbook-xsl kate-data katepart kde-runtime kde-runtime-data kdelibs-bin
  kdelibs5-data kdelibs5-plugins kdoctools liba52-0.7.4 libattica0.4 libbasicusageenvironment0
  libcddb2 libdbusmenu-qt2 libdlrestrictions1 libdvbpsi9 libebml4 libexiv2-13 libfam0
  libfreerdp-cache1.1 libfreerdp-client1.1 libfreerdp-codec1.1 libfreerdp-common1.1.0
  libfreerdp-core1.1 libfreerdp-crypto1.1 libfreerdp-gdi1.1 libfreerdp-locale1.1
  libfreerdp-primitives1.1 libfreerdp-rail1.1 libfreerdp-utils1.1 libgpgme++2 libgroupsock1
  libiodbc2 libiso9660-8 libkactivities-bin libkactivities-models1 libkactivities6
  libkatepartinterfaces4 libkcmutils4 libkde3support4 libkdeclarative5 libkdecore5 libkdesu5
  libkdeui5 libkdewebkit5 libkdnssd4 libkemoticons4 libkfile4 libkhtml5 libkio5 libkipi-data
  libkipi11 libkjsapi4 libkjsembed4 libkmediaplayer4 libknewstuff3-4 libknotifyconfig4 libkntlm4
  libkparts4 libkpty4 libkrosscore4 libktexteditor4 libkxmlrpcclient4 liblircclient0
  liblivemedia23 liblua5.2-0 libmatroska6 libmpcdec6 libmpeg2-4 libmysqlclient18 libnepomuk4
  libnepomukcore4 libnepomukquery4a libnepomukutils4 libnl-route-3-200 libntrack-qt4-1 libntrack0
  libphonon4 libplasma3 libpolkit-qt-1-1 libpostproc52 libproxy-tools libpulse-mainloop-glib0
  libqca2 libqt4-declarative libqt4-designer libqt4-opengl libqt4-qt3support libqt4-script
  libqt4-sql libqt4-sql-mysql libqt4-svg libresid-builder0c2a libshine3 libsidplay2 libsolid4
  libsoprano4 libssh-gcrypt-4 libstreamanalyzer0 libstreams0 libthreadweaver4 libtwolame0
  libupnp6 libupower-glib3 libusageenvironment1 libutempter0 libva-drm1 libva-x11-1 libvcdinfo0
  libvlc5 libvlccore8 libvncclient0 libwinpr-crt0.1 libwinpr-crypto0.1 libwinpr-dsparse0.1
  libwinpr-environment0.1 libwinpr-file0.1 libwinpr-handle0.1 libwinpr-heap0.1 libwinpr-input0.1
  libwinpr-interlocked0.1 libwinpr-library0.1 libwinpr-path0.1 libwinpr-pool0.1
  libwinpr-registry0.1 libwinpr-rpc0.1 libwinpr-sspi0.1 libwinpr-synch0.1 libwinpr-sysinfo0.1
  libwinpr-thread0.1 libwinpr-utils0.1 libxcb-composite0 libxcb-keysyms1 libxcb-randr0 libxcb-xv0
  libxml2-utils libzvbi-common libzvbi0 mysql-common nepomuk-core-data ntrack-module-libnl-0
  oxygen-icon-theme phonon phonon-backend-vlc plasma-scriptengine-javascript sgml-data
  soprano-daemon upower vlc vlc-data vlc-nox vlc-plugin-notify vlc-plugin-pulse vlc-plugin-samba
Suggested packages:
  docbook docbook-dsssl docbook-defguide dbtoepub docbook-xsl-doc-html docbook-xsl-doc-pdf
  docbook-xsl-doc-text docbook-xsl-doc docbook-xsl-saxon fop libsaxon-java libxalan2-java
  libxslthl-java xalan djvulibre-bin finger icoutils libcanberra-pulse sound-theme-freedesktop
  exiv2 fam freerdp-x11 iodbc hspell lirc libqca2-plugin-cyrus-sasl libqca2-plugin-gnupg
  libqca2-plugin-ossl libqt4-declarative-folderlistmodel libqt4-declarative-gestures
  libqt4-declarative-particles libqt4-declarative-shaders qt4-qmlviewer libqt4-dev
  media-player-info phonon-backend-gstreamer phonon-backend-mplayer perlsgml w3-recs opensp
  virtuoso-minimal videolan-doc libdvdcss2
The following NEW packages will be installed:
  docbook-xml docbook-xsl kate-data katepart kde-runtime kde-runtime-data kdelibs-bin
  kdelibs5-data kdelibs5-plugins kdoctools ksnapshot liba52-0.7.4 libattica0.4
  libbasicusageenvironment0 libcddb2 libdbusmenu-qt2 libdlrestrictions1 libdvbpsi9 libebml4
  libexiv2-13 libfam0 libfreerdp-cache1.1 libfreerdp-client1.1 libfreerdp-codec1.1
  libfreerdp-common1.1.0 libfreerdp-core1.1 libfreerdp-crypto1.1 libfreerdp-gdi1.1
  libfreerdp-locale1.1 libfreerdp-primitives1.1 libfreerdp-rail1.1 libfreerdp-utils1.1
  libgpgme++2 libgroupsock1 libiodbc2 libiso9660-8 libkactivities-bin libkactivities-models1
  libkactivities6 libkatepartinterfaces4 libkcmutils4 libkde3support4 libkdeclarative5
  libkdecore5 libkdesu5 libkdeui5 libkdewebkit5 libkdnssd4 libkemoticons4 libkfile4 libkhtml5
  libkio5 libkipi-data libkipi11 libkjsapi4 libkjsembed4 libkmediaplayer4 libknewstuff3-4
  libknotifyconfig4 libkntlm4 libkparts4 libkpty4 libkrosscore4 libktexteditor4 libkxmlrpcclient4
  liblircclient0 liblivemedia23 liblua5.2-0 libmatroska6 libmpcdec6 libmpeg2-4 libmysqlclient18
  libnepomuk4 libnepomukcore4 libnepomukquery4a libnepomukutils4 libnl-route-3-200
  libntrack-qt4-1 libntrack0 libphonon4 libplasma3 libpolkit-qt-1-1 libpostproc52 libproxy-tools
  libpulse-mainloop-glib0 libqca2 libqt4-declarative libqt4-designer libqt4-opengl
  libqt4-qt3support libqt4-script libqt4-sql libqt4-sql-mysql libqt4-svg libresid-builder0c2a
  libshine3 libsidplay2 libsolid4 libsoprano4 libssh-gcrypt-4 libstreamanalyzer0 libstreams0
  libthreadweaver4 libtwolame0 libupnp6 libupower-glib3 libusageenvironment1 libutempter0
  libva-drm1 libva-x11-1 libvcdinfo0 libvlc5 libvlccore8 libvncclient0 libwinpr-crt0.1
  libwinpr-crypto0.1 libwinpr-dsparse0.1 libwinpr-environment0.1 libwinpr-file0.1
  libwinpr-handle0.1 libwinpr-heap0.1 libwinpr-input0.1 libwinpr-interlocked0.1
  libwinpr-library0.1 libwinpr-path0.1 libwinpr-pool0.1 libwinpr-registry0.1 libwinpr-rpc0.1
  libwinpr-sspi0.1 libwinpr-synch0.1 libwinpr-sysinfo0.1 libwinpr-thread0.1 libwinpr-utils0.1
  libxcb-composite0 libxcb-keysyms1 libxcb-randr0 libxcb-xv0 libxml2-utils libzvbi-common
  libzvbi0 mysql-common nepomuk-core-data ntrack-module-libnl-0 oxygen-icon-theme phonon
  phonon-backend-vlc plasma-scriptengine-javascript sgml-data soprano-daemon upower vlc vlc-data
  vlc-nox vlc-plugin-notify vlc-plugin-pulse vlc-plugin-samba
0 upgraded, 156 newly installed, 0 to remove and 0 not upgraded.
Need to get 83.2 MB of archives.
After this operation, 221 MB of additional disk space will be used.
Do you want to continue? [Y/n] Y

The following extra packages will be installed: