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Rajkumar Natarajan's questions

Martin Hope
Rajkumar Natarajan
Asked: 2019-11-03 13:06:57 +0800 CST
  • 6

我正在尝试更新我的 macOS 中的软件sdman但我收到 bash outadted 版本错误。

rajkumar.natarajan$ sdk update   
    An outdated version of bash was detected on your system!
    We recommend upgrading to bash 4.x, you have:

    3.2.57(1)-release
    Need to use brute force to replace candidates...

但是 bash 版本已经是最新的了。

rajkumar.natarajan$ which bash 
/usr/local/bin/bash   
rajkumar.natarajan$ bash --version   
GNU bash, version 5.0.11(1)-release (x86_64-apple-darwin16.7.0)
Copyright (C) 2019 Free Software Foundation, Inc.   
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.   
There is NO WARRANTY, to the extent permitted by law.
bash
Martin Hope
Rajkumar Natarajan
Asked: 2019-04-10 03:46:23 +0800 CST
  • 4

我正在使用屏幕和分离模式在终端中运行睡眠命令。
一旦屏幕立即返回，我正在运行ps命令来验证睡眠是否正在运行。

$ screen -d -m 'sleep 2m'
[raj@localhost ~]$ ps
PID TTY          TIME CMD
22795 pts/0    00:00:00 bash
22869 pts/0    00:00:00 ps

但是该命令没有显示睡眠。我在这里做错了什么？

scripting gnu-screen
Martin Hope
Rajkumar Natarajan
Asked: 2018-11-14 18:42:30 +0800 CST
  • 1

我正在尝试在centos 中安装resolvconf。

在 Ubuntu 中，我可以安装 resolvconf sudo apt-get install resolvconf。

对于centos，我尝试做同样的事情，sudo yum install resolvconf但我收到了消息No package found. Nothing to do

如何在 centos 中安装 resolvconf 。

centos resolvconf
Martin Hope
Rajkumar Natarajan
Asked: 2018-11-12 15:37:44 +0800 CST
  • 0

我有 2 台机器 machine1 和 machine2。

我想从 machine1 将一些内容写入 machine2 中的文件。

在同一台机器上，我可以运行sudo cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys将 的内容~/.ssh/id_dsa.pub写入~/.ssh/authorized_keys文件。

但我想将~/.ssh/id_dsa.pubmachine1 的内容放入~/.ssh/authorized_keysmachine2 的文件中。我可以做 ssh 并做这个。由于我使用用户名和密码在单个命令中以静默模式安装 hadoop。

我不想scp替换整个文件。

我怎样才能在提供另一台机器的用户名/密码的单个命令中做到这一点。

bash shell-script
Martin Hope
Rajkumar Natarajan
Asked: 2018-02-17 16:14:08 +0800 CST
  • 1

我正在尝试在 opensuse 42.3 tumbleweed 上安装 libXScrnSaver。

由于以下错误，我无法成功安装。

rajkumar@linux-7owj:~> sudo rpm -i Downloads/slack-3.0.5-0.1.fc21.x86_64.rpm 
[sudo] password for root: 
warning: Downloads/slack-3.0.5-0.1.fc21.x86_64.rpm: Header V4 RSA/SHA1 Signature, key ID bf6a7041: NOKEY
error: Failed dependencies:
        libXScrnSaver is needed by slack-3.0.5-0.1.fc21.x86_64
        libappindicator is needed by slack-3.0.5-0.1.fc21.x86_64

看起来有些图书馆不见了。

我尝试通过以下命令安装 libXScrnSaver，但也失败了。

rajkumar@linux-7owj:~> sudo zypper install libappindicator
Loading repository data...
Reading installed packages...
'libappindicator' not found in package names. Trying capabilities.
No provider of 'libappindicator' found.
Resolving package dependencies...

Nothing to do.

我怎样才能成功安装缺少的依赖项和 slack。

opensuse
Martin Hope
Rajkumar Natarajan
Asked: 2018-02-17 15:33:02 +0800 CST
  • 1

我正在尝试在 Opensuse 42.3 上安装Discord 应用程序。

我下载了tar.gz并提取了它的内容。然后我通过运行命令使discord.desktop文件可执行sudo chmod +x ./Discord/discord.desktop。

然后我双击该discord.desktop文件，但它没有成功运行。下面是打开后的窗口截图：

不和谐截图

我尝试从命令行启动 Discord，但收到以下错误：

:~> sudo chmod +x Downloads/Discord/discord.desktop 
[sudo] password for root: 
:~> ./Downloads/Discord/discord.desktop 
./Downloads/Discord/discord.desktop: line 1: [Desktop: command not found
./Downloads/Discord/discord.desktop: line 4: unexpected EOF while looking for matching `''
./Downloads/Discord/discord.desktop: line 10: syntax error: unexpected end of file

discord.desktop 的内容是 -

rajkumar@linux-7owj:~> cat 下载/Discord/discord.desktop

[Desktop Entry]
Name=Discord
StartupWMClass=discord
Comment=All-in-one voice and text chat for gamers that's free, secure, and works on both your desktop and phone.
GenericName=Internet Messenger
Exec=/usr/share/discord/Discord
Icon=discord
Type=Application
Categories=Network;InstantMessaging;

X-Session Errors 没有给出任何有用的结果。我在执行不和谐之前和之后都试过了

rajkumar@linux-7owj:~> tail -f ~/.xsession-errors
tail: cannot open '/home/rajkumar/.xsession-errors' for reading: No such file or directory
tail: no files remaining

以下是我的操作系统详细信息：

:~> lsb_release 
LSB Version:    core-2.0-noarch:core-3.2-noarch:core-4.0-noarch:core-2.0-x86_64:core-3.2-x86_64:core-4.0-x86_64:desktop-4.0-amd64:desktop-4.0-noarch:graphics-2.0-amd64:graphics-2.0-noarch:graphics-3.2-amd64:graphics-3.2-noarch:graphics-4.0-amd64:graphics-4.0-noarch

通过使用 snap 安装 Opensuse 在 Opensuse 上启动不和谐时，会出现以下错误：

Gtk-Message: Failed to load module "canberra-gtk-module"
Discord 0.0.4
Starting updater.
[Modules] Modules initializing
[Modules] Distribution: remote
[Modules] Host updates: enabled
[Modules] Module updates: enabled
[Modules] Module install path: /home/tjiho/snap/discord/52/.config/discord/0.0.4/modules
[Modules] Module installed file path: /home/tjiho/snap/discord/52/.config/discord/0.0.4/modules/installed.json
[Modules] Module download path: /home/tjiho/snap/discord/52/.config/discord/0.0.4/modules/pending
[11045:0219/154734.826940:FATAL:platform_font_linux.cc(63)] Check failed: typeface. Could not find any font: Noto Sans, sans
#0 0x000001e57c8e <unknown>
#1 0x000001e6a80b <unknown>
#2 0x00000198780d <unknown>
#3 0x00000198744f <unknown>
#4 0x000001988106 <unknown>
#5 0x000001972469 <unknown>
#6 0x000000b3271e <unknown>
#7 0x000000d87a03 <unknown>
#8 0x000003c22106 atom::api::WebContents::InitWithSessionAndOptions()
#9 0x000003c2298f atom::api::WebContents::WebContents()
#10 0x000003c2d886 atom::api::WebContents::Create()
#11 0x000003c3fb35 atom::api::Window::Window()                                                                                                                                                 
#12 0x000003c4164c atom::api::Window::New()                                                                                                                                                    
#13 0x000003be75f0 mate::internal::InvokeNew<>()                                                                                                                                               
#14 0x000003be7780 mate::internal::Dispatcher<>::DispatchToCallback()                                                                                                                          
#15 0x7f388e3e6e6f <unknown>                                                                                                                                                                   
#16 0x7f388e7f637b <unknown>                                                                                                                                                                   
#17 0x7f388e7f5e39 <unknown>                                                                                                                                                                   
#18 0x0c816f2843a7 <unknown>                                                                                                                                                                   

Aborted (core dumped)

我能做些什么来解决这个问题？

opensuse