Category Archives: Linux

Linux First Install oracle Start Error [How to Solve]

The following error occurs when installing Oracle for the first time:

[oracle@localhost db_1]$ ./runInstaller
ERROR: Unable to verify the graphical display setup. This application requires X display. Make sure that xdpyi                                               nfo exist under PATH variable.

No X11 DISPLAY variable was set, but this program performed an operation which requires it.

Solution:

[oracle@localhost db_1]$ export DISPLAY=:0
[oracle@localhost db_1]$ echo $DISPLAY
:0

After execution, the following problems occur:

[oracle@localhost db_1]$ ./runInstaller
ERROR: Unable to verify the graphical display setup. This application requires X display. Make sure that xdpyi                                               nfo exist under PATH variable.
Exception in thread "main" java.lang.UnsatisfiedLinkError: /data/oracle/product/19.3/db_1/jdk/jre/lib/amd64/li                                               bawt_xawt.so: libXrender.so.1: cannot open shared object file: No such file or directory
        at java.lang.ClassLoader$NativeLibrary.load(Native Method)
        at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
        at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)
        at java.lang.Runtime.load0(Runtime.java:809)
        at java.lang.System.load(System.java:1086)
        at java.lang.ClassLoader$NativeLibrary.load(Native Method)
        at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
        at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1845)
        at java.lang.Runtime.loadLibrary0(Runtime.java:870)
        at java.lang.System.loadLibrary(System.java:1122)
        at java.awt.Toolkit$3.run(Toolkit.java:1636)
        at java.awt.Toolkit$3.run(Toolkit.java:1634)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.awt.Toolkit.loadLibraries(Toolkit.java:1633)
        at java.awt.Toolkit.<clinit>(Toolkit.java:1670)
        at com.jgoodies.looks.LookUtils.isLowResolution(LookUtils.java:484)
        at com.jgoodies.looks.LookUtils.<clinit>(LookUtils.java:249)
        at com.jgoodies.looks.plastic.PlasticLookAndFeel.<clinit>(PlasticLookAndFeel.java:135)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at javax.swing.SwingUtilities.loadSystemClass(SwingUtilities.java:1879)
        at javax.swing.UIManager.setLookAndFeel(UIManager.java:582)
        at oracle.install.commons.util.Application.startup(Application.java:976)
        at oracle.install.commons.flow.FlowApplication.startup(FlowApplication.java:181)
        at oracle.install.commons.flow.FlowApplication.startup(FlowApplication.java:198)
        at oracle.install.commons.base.driver.common.Installer.startup(Installer.java:1106)
        at oracle.install.ivw.db.driver.DBConfigWizard.startup(DBConfigWizard.java:71)
        at oracle.install.ivw.db.driver.DBConfigWizard.main(DBConfigWizard.java:81)

Install libxrender.So.1 in the prompt as root:

[root@localhost ~]# yum install libXrender.so.1

New problems after installation:

[oracle@localhost db_1]$ ./runInstaller
ERROR: Unable to verify the graphical display setup. This application requires X display. Make sure that xdpyinfo exist under PATH variable.
Exception in thread "main" java.lang.UnsatisfiedLinkError: /data/oracle/product/19.3/db_1/jdk/jre/lib/amd64/libawt_xawt.so: libXrender.so.1: wrong ELF class: ELFCLASS32

Install libxrender:

[root@localhost ~]# yum install -y libXrender

New issues:

Can't connect to X11 window server using ':0' as the value of the DISPLAY variable.

After installation, restart oracle

NXP mx8 Platform tensorflow-lite build error [How to Solve]

Solutions provided by NXP
Compiling L5.4.3_1.0.0 BSP On Ubuntu 180.4 LTS – NXP Community
1. Compile tensorflow-lite with bitbake
bitbake tensorflow-lite -c do_configure -v -f
The following error occurs, at this time you can see the download of the wrong package
FAILED: ruy-populate-prefix/src/ruy-populate-stamp/ruy-populate-download
The specific path is
tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/_deps/ruy-subbuild/ruy-populate-prefix/src/ruy-populate-stamp/ruy-populate-download

tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/_deps/ruy-subbuild/ruy-populate-prefix/src/

Check whether there is a corresponding zip package in the modified directory, and copy it to the tensorflow pack folder created in the corresponding root directory.

| FAILED: ruy-populate-prefix/src/ruy-populate-stamp/ruy-populate-download
| cd /work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build && /work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/recipe-sysroot-native/usr/bin/cmake -P /work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/_deps/ruy-subbuild/ruy-populate-prefix/src/ruy-populate-stamp/download-ruy-populate.cmake && /work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/recipe-sysroot-native/usr/bin/cmake -P /work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/_deps/ruy-subbuild/ruy-populate-prefix/src/ruy-populate-stamp/verify-ruy-populate.cmake && /work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/recipe-sysroot-native/usr/bin/cmake -P /work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/_deps/ruy-subbuild/ruy-populate-prefix/src/ruy-populate-stamp/extract-ruy-populate.cmake && /work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/recipe-sysroot-native/usr/bin/cmake -E touch /work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/_deps/ruy-subbuild/ruy-populate-prefix/src/ruy-populate-stamp/ruy-populate-download
| ninja: build stopped: subcommand failed.
|
| CMake Error at /work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/recipe-sysroot-native/usr/share/cmake-3.19/Modules/FetchContent.cmake:989 (message):
|   Build step for ruy failed: 1
| Call Stack (most recent call first):
|   /work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/recipe-sysroot-native/usr/share/cmake-3.19/Modules/FetchContent.cmake:1118:EVAL:2 (__FetchContent_directPopulate)
|   /work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/recipe-sysroot-native/usr/share/cmake-3.19/Modules/FetchContent.cmake:1118 (cmake_language)
|   tools/cmake/modules/OverridableFetchContent.cmake:531 (FetchContent_Populate)
|   tools/cmake/modules/ruy.cmake:30 (OverridableFetchContent_Populate)
|   tools/cmake/modules/Findruy.cmake:16 (include)
|   CMakeLists.txt:197 (find_package)
|
|
| -- Configuring incomplete, errors occurred!
| See also "/work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/CMakeFiles/CMakeOutput.log".
| See also "/work/code/temp/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/CMakeFiles/CMakeError.log".
| + bb_sh_exit_handler
| + ret=1
| + [ 1 != 0 ]
| + echo WARNING: exit code 1 from a shell command.
| WARNING: exit code 1 from a shell command.
| + exit 1

The second error;

tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/pthreadpool-download

Check whether there is a zip in this directory, and in the copy to tensorflow pack folder

ninja: build stopped: subcommand failed.
-- Downloading pthreadpool to /work/code/test/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/pthreadpool-source (define PTHREADPOOL_SOURCE_DIR to avoid it)
-- Configuring done
-- Generating done
-- Build files have been written to: /work/code/test/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/pthreadpool-download
[1/9] Creating directories for 'pthreadpool'
[2/9] Performing download step (download, verify and extract) for 'pthreadpool'
-- Downloading...
   dst='/work/code/test/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/pthreadpool-download/pthreadpool-prefix/src/545ebe9f225aec6dca49109516fac02e973a3de2.zip'
   timeout='none'
   inactivity timeout='none'
-- Using src='https://github.com/Maratyszcza/pthreadpool/archive/545ebe9f225aec6dca49109516fac02e973a3de2.zip'
-- [download 100% complete]
-- verifying file...
       file='/work/code/test/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/pthreadpool-download/pthreadpool-prefix/src/545ebe9f225aec6dca49109516fac02e973a3de2.zip'
-- Downloading... done
-- extracting...
     src='/work/code/test/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/pthreadpool-download/pthreadpool-prefix/src/545ebe9f225aec6dca49109516fac02e973a3de2.zip'
     dst='/work/code/test/ver/build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/pthreadpool-source'
-- extracting... [tar xfz]

3. Subsequent errors change in turn.

4. Execute this../cp.sh script during bitmake tensorflow Lite – C compile – V – f compilation, and tensorflow Lite will be compiled successfully.

#!/bin/bash
mkdir -p ./../build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/_deps/ruy-subbuild/ruy-populate-prefix/src/
cp 54774a7a2cf85963777289193629d4bd42de4a59.zip  ./../build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/_deps/ruy-subbuild/ruy-populate-prefix/src/


mkdir -p ./../build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/cpuinfo-download/cpuinfo-prefix/src/
cp 5916273f79a21551890fd3d56fc5375a78d1598d.zip ../build-imx-robot/tmp/work/cortexa53-crypto-poky-linux/tensorflow-lite/2.5.0-r0/build/cpuinfo-download/cpuinfo-prefix/src/

[Solved] rsync Error: @ERROR: chdir failed rsync error

Question

The client uses the Rsync command to synchronize the following errors:

@ERROR: chdir failed
rsync error: error starting client-server protocol (code 5) at main.c(1649) [sender=3.1.2]

Solution:

After troubleshooting, it is caused by the server directory creation failure

[ew_dbbak]
path = /data/dbbak/ew_dbbak/

[Solved] Dvc push Error: (ERROR: configuration error…)

When you can’t push it, check whether your remote warehouse is stored in the corresponding file

Click on your .Div file. There are two files beginning with config, config and config.Local

if your config.Local stores your remote warehouse address and there is nothing in config

So congratulations! Successful lying gun!

Solution:

When DVC identifies the directory of your remote warehouse, find the directory under your config file instead of config.Local, delete the config.Local file, and then remote add your warehouse path, and then you can push it
in a word, config cannot be empty

Linux Command Error: Redis (error) NOAUTH Authentication required

The authentication problem occurs because redis has set the authentication password
after startup, enter the following command:

127.0.0.1:6379> auth yourpassword

My password is redis123

127.0.0.1:6379> set name hello
(error) NOAUTH Authentication required.
127.0.0.1:6379> (error) NOAUTH Authentication required.
(error) ERR unknown command '(error)'
127.0.0.1:6379> auth redis123
ok

Redis can be operated normally.

[Solved] Ubuntu Execute uci Error: uci: error while loading shared libraries: lib

Problem description

The following errors occur when testing UCI under Ubuntu

root@virtual-machine:/home//uci# uci 
uci: error while loading shared libraries: libuci.so: cannot open shared object file: No such file or directory

Solution

Modify the/etc/ld.so.conf file, add the/usr/local/lib path at the end of the file, and execute ldconfig to take effect immediately

echo /usr/local/lib >>/etc/ld.so.conf

Testing

Enter UCI again to see the following input

root@virtual-machine:/home/uci# uci 
Usage: uci [<options>] <command> [<arguments>]

Commands:
	batch
	export     [<config>]
	import     [<config>]
	changes    [<config>]
	commit     [<config>]
	add        <config> <section-type>
	add_list   <config>.<section>.<option>=<string>
	del_list   <config>.<section>.<option>=<string>
	show       [<config>[.<section>[.<option>]]]
	get        <config>.<section>[.<option>]
	set        <config>.<section>[.<option>]=<value>
	delete     <config>[.<section>[[.<option>][=<id>]]]
	rename     <config>.<section>[.<option>]=<name>
	revert     <config>[.<section>[.<option>]]
	reorder    <config>.<section>=<position>

Options:
	-c <path>  set the search path for config files (default: /etc/config)
	-d <str>   set the delimiter for list values in uci show
	-f <file>  use <file> as input instead of stdin
	-m         when importing, merge data into an existing package
	-n         name unnamed sections on export (default)
	-N         don't name unnamed sections
	-p <path>  add a search path for config change files
	-P <path>  add a search path for config change files and use as default
	-t <path>  set save path for config change files
	-q         quiet mode (don't print error messages)
	-s         force strict mode (stop on parser errors, default)
	-S         disable strict mode
	-X         do not use extended syntax on 'show'

/usr/bin/ssh-copy-id: ERROR: No identities found [How to Solve]

Look at the problem first

ssh-keygen -t rsa
ssh-copy-id localhost
/usr/bin/ssh-copy-id: ERROR: No identities found

The RSA and rsa.pub files are generated normally, but the SSH copy ID cannot be reported:/usr/bin/SSH copy ID: error: no identities found

After a closer look, the file size is 0

[hadoop@hadoop102 .ssh]$ ll
sum 0
-rw-------. 1 hadoop hadoop 0 11月 21 21:30 authorized_keys
-rw-------. 1 hadoop hadoop 0 11月 21 21:34 id_rsa
-rw-r--r--. 1 hadoop hadoop 0 11月 21 21:34 id_rsa.pub

Look at the virtual machine disk. It has been used up

[root@hadoop102 ~]# df -lh
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda2        15G   15G     0 100% /
tmpfs           2.9G     0  2.9G   0% /dev/shm
/dev/sda1        93M   38M   51M  44% /boot

To see what not to delete some files

[root@hadoop102 /]# du -sm * | sort -n
du: Cannot access "proc/129429/task/129429/fd/4": No such file or directory
du: Cannot access "proc/129429/task/129429/fdinfo/4": No such file or directory
du: Cannot access "proc/129429/fd/4": No such file or directory
du: Cannot access "proc/129429/fdinfo/4": No such file or directory
0	proc
0	selinux
0	sys
1	data
1	dev
1	home
1	lost+found
1	media
1	mnt
1	mynewdisk
1	srv
1	tmp
8	bin
16	sbin
28	lib64
30	etc
37	boot
78	app
132	root
206	lib
524	var
2241	usr
11255	opt

This is deleted

[root@hadoop102 module]# df -lh
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda2        15G   14G  553M  97% /
tmpfs           2.9G     0  2.9G   0% /dev/shm
/dev/sda1        93M   38M   51M  44% /boot

Then generate the secret key, and then execute SSH copy ID.

net::ERR_HTTP2_PROTOCOL_ERROR 200 [How to Solve]

Scenario:

In the web environment, a request reports this problem, but other requests are normal. Open the F12 console and see the exception net:: err_HTTP2_PROTOCOL_Error 200 error

Troubleshooting:

Viewing the error.log report of nginx is that the permission of a temporary file is insufficient. The reason is that the account for starting nginx does not have operation permission in the previously reported directory

Solution:

1. Open the corresponding temporary directory to read and write permissions

2. Start nginx with the root account

[Solved] TensorRT Error: Assertion Error in trtSmToCask: 0 (Unsupported SM.)

Error message:

E20211126 11:55:13.654 140412916315904 tensorrt.cpp:10] …/rtSafe/cuda/caskUtils.cpp (98) – Assertion Error in trtSmToCask: 0 (Unsupported SM.)

Reason: tensorrt version does not match CUDA or cudnn version. For example, the author’s tensorrt version is 7.2.1, while CUDA is the latest 11.5 version. CUDA version is too high to adapt:

Solution: reinstall CUDA or tensorrt
suggestion: reinstall CUDA because different versions of tensorrt have inconsistent codes. For example, tensorrt 7.2.1 and tensorrt 8.2.1 require that noexcept be added when rewriting virtual functions. If the amount of code is small, consider reinstalling tensorrt
attach the matching requirements of tensorrt, CUDA and cudnn versions: tensorrt release note

[Solved] Linux Error: Error: ENOSPC: System limit for number of file watchers

Background:

System: Ubuntu18

Problem scenario: When writing a case using react scaffolding, use instructions   npm start Unsuccessful, occurred Error: enospc: system limit for number of file watchers error.

Solution:

Error: enospc: system limit for number of file watchers error. The system limit of the file monitor has reached the default upper limit and needs to be increased.

Instructions can be used  $cat /proc/sys/fs/inotify/max_user_Watch to see

cat /proc/sys/fs/inotify/max_user_watch es 524288

New instructions can be set for temporary limit increase:

$ sudo sysctl fs.inotify.max_user_watches = 524288 $ sudo sysctl -p

Permanent increase limit

$ echo fs.inotify.max_user_watches = 524288 | sudo tee -a /etc/sysctl.conf $ sudo sysctl -p