计算机技术学习记录

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  • 创建intellij idea启动图标

    centos上创建intellij idea启动图标

    Pycharm

    # cat /usr/share/applications/pycharm.desktop 
[Desktop Entry]
Name=Pycharm
GenericName=Pycharm
Comment=Pycharm2019:The Python IDE
Exec=sh /wjhdata/pycharm-community-2019.1.3/bin/pycharm.sh 
Icon=/wjhdata/pycharm-community-2019.1.3/bin/pycharm.png
Terminal=false
Type=Application
Categories=Utility;Application

    IntelliJ IDEA

    # cat /usr/share/applications/intellij.desktop
[Desktop Entry]
Name=IntelliJ IDEA
Comment=IntelliJ IDEA
Exec=sh /wjhdata/idea-IC-191.7479.19/bin/idea.sh
Icon=/wjhdata/idea-IC-191.7479.19/bin/idea.png
Terminal=false
Type=Application
Categories=Utility;Application

  • running vncserver on centos7

    install

    yum install tigervnc-server xorg-x11-fonts-Type1

    init

    使vncserver运行在5905端口.
    /etc/systemd/system/vncserver@:5.service

    [Unit]
Description=Remote desktop service (VNC)
After=syslog.target network.target

[Service]
Type=forking

#相应用户user的uid.
XDG_RUNTIME_DIR="/run/user/1002"
# Clean any existing files in /tmp/.X11-unix environment
ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
ExecStart=/usr/sbin/runuser -l <user> -c "/usr/bin/vncserver %i"
PIDFile=/home/<user>/.vnc/%H%i.pid
ExecStop=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'

[Install]
WantedBy=multi-user.target

    sudo systemctl enable vncserver@:5.service
    sudo systemctl start vncserver@:5.service

    配置vncserver

    #vim .vnc/config

# securitytypes=vncauth,tlsvnc
# desktop=sandbox
# geometry=2000x1200
# localhost
# alwaysshared
#
geometry=1920x1080

  • How to Reboot WSL

    # RUN CMD AS Administrator
net stop LxssManager

net start LxssManager

    How to Reboot WSL (Windows subsystem Linux) in Windows 10

  • empty-rgw

    remove osd

     ceph-deploy disk list node1 node2 node3 
  # ssh host
 systemctl stop ceph-osd@0

 ceph osd purge 0  --yes-i-really-mean-it
 ceph osd purge 1  --yes-i-really-mean-it
 ceph osd purge 2  --yes-i-really-mean-it

 ceph osd out  0
 ceph osd out  1
 ceph osd out  2

    (more…)

  • windows自带MD5

    打开命令提示符CMD

    Microsoft Windows [版本 10.0.17763.348]
(c) 2018 Microsoft Corporation。保留所有权利。

C:\Users\mulang>CertUtil -hashfile D:\\linux-read-workflow.png MD5
MD5 的 D:\\linux-read-workflow.png 哈希:
6abbfa0d8a623e39548693390d00e036
CertUtil: -hashfile 命令成功完成。

C:\Users\mulang>CertUtil -hashfile D:\\linux-read-workflow1.png MD5
MD5 的 D:\\linux-read-workflow1.png 哈希:
6abbfa0d8a623e39548693390d00e036
CertUtil: -hashfile 命令成功完成。