hushui的专栏

openssl

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Linux shell history

:skip=xxx是在备份时对if 后面的部分也就是原文件跳过多少块再开始备份;seek=xxx则是在备份时对of 后面的部分也就是目标文件跳过多少块再开始写。Example:u-boot_params.bin is saved in MMC offset 40960, size 153600dump itroot@localhost:/tmp# dd if=/dev/mmcblk0 of=./u-boot_params.bin bs=1 skip=40960 count=15360...

ssh -o PreferredAuthentications=password -o PubkeyAuthentication=no example.com

GitHub - sysprog21/lkmpg: The Linux Kernel Module Programming Guide (updated for 5.x kernels)

Grub1kernel (hd0,0)/isolinux/vmlinuz linux textrepo=hd:/dev/sda2:/initrd (hd0,0)/isolinux/initrd.imgOrkernel (hd0,0)/isolinux/vmlinuz noeject inst.stage2=hd:/dev/sda1:/CentOS-7-x86_64-DVD-1503-01.isoinitrd (hd0,0)/isolinux/initrd.img...

### for i386 32bit build [lake@localhost busybox-1.33.0]$ CFLAGS=-m32 CXXFLAGS=-m32 LDFLAGS=-m32 make defconfig[lake@localhost busybox-1.33.0]$ CFLAGS=-m32 CXXFLAGS=-m32 LDFLAGS=-m32 make menuconfig ---> Static link busyboxscripts/kconf...

firefly@firefly:~$ echo $XDG_SESSION_TYPEx11firefly@firefly:~$firefly@firefly:~$ xdriinfolibGL error: failed to create dri screenlibGL error: failed to load driver: rockchiplibGL error: failed to create dri screenlibGL error: failed to load dr...

No waylandNo westonNo qtKmscubebased on libdrm/EGL>>>>>>>>>> log[root@rk3399:/]# kmscubearm_release_ver of this libmali is 'r18p0-01rel0', rk_so_ver is '4'.Using display 0x19ffc390 with EGL version 1.4EGL..

我用阿里云盘分享了「韦东山Linux视频第1期 S3C6410版本」，你可以不限速下载???? 复制这段内容打开「阿里云盘」App 即可获取 链接：https://www.aliyundrive.com/s/ZhN7XcNgAAR

[lake@localhost]$ echo "href=\"./index.php@commmnd=223\""href="./index.php@commmnd=223"[lake@localhost]$ echo "href=\"./index.php@commmnd=223\"" |sed 's/href\=\"\(.*\)\"/href\=\"\1\.html\"/g'href="./index.php@commmnd=223.html"Use [^\"]* ,...

# sed for empty lines' removecat yourfilelist | sed -r '/^\s*$/d' |xargs -r cp -p -v --target-directory=/your_destnation_folder_name/

BuildrootEnable Mesa3d/EGL/Weston etcNote1.GALLIUM_DRIVER_SWRAST, keep DRI_DRIVER_SWRAST New Mesa3d 20.x should useGALLIUM_DRIVER_SWRAST2. use -vga std (qemu Bosch standard VGA)3. Weston test with fbdev4. $mkdir /tmp/wayland ; ch...

Make.conf/VIDEO CARDS/DRI vs. Galliumhttps://www.funtoo.org/Make.conf/VIDEO_CARDS/DRI_vs._Gallium_vs._NVIDIADRI vs. GalliumGraphics on Linux can be confusing due to the various technologies involved, not just the different graphics cards available b.

find path/to/dir/* \! -name 'this_dir_stays_put' -type d -maxdepth 0 \ -exec mv {} new/location \;

[lake@server /]$ cat > $HOME/.pydistutils.cfg <<EOF> [install]> user=1> EOF[lake@server /]$ pip install --upgrade youtube_dlCollecting youtube_dl Downloading https://files.pythonhosted.org/packages/a4/43/1f586e49e68f8b41c4be41630.

https://www.thomas-krenn.com/en/wiki/Ubuntu_LTS_Hardware_Enablement_Stack_informationThe following table shows the GA and HWE kernel versions of Ubuntu 20.04 LTS, 18.04 LTS und 16.04 LTS: Ubuntu LTS Version Kernel Version Kernel Note Kernel .

arm-none-linux-gnueabi-readelf -a $elffilename | grep "Shared library:"

cd `ls | awk 'NR==1'`NR 由ls确定是第几个乱码目录例如[lake@localhhost down.52pojie.cn]$ ls |awk 'NR==2' ...

Source https://gitlab.com/procps-ng/procps###tool chain[lake@localhost8 toolchain]$ which aarch64-your-toolchain-gnu-gcc~/usr/local/kreatv/toolchain/aarch64/2.0.3/bin/aarch64-your-toolchain-gnu-gcc[lake@localhost8 toolchain]$ basename /usr/lo...

chrootfakeroot ===> ext imageContainerdocker ==> cgroup/overlay/lxcqemu-static ==> qemu + chrootlib/so PATHpatchelf ===>ld-linux-xxx.soLD_LIBRARY_PATH ===> app so PATH only

[lake@localhost kernel]$ diff --helpUsage: diff [OPTION]... FILESCompare FILES line by line.Mandatory arguments to long options are mandatory for short options too. --normal output a normal diff (the default) -u, -U NUM, --un.

[lake@localhost source]$ git clone --depth 1 --branch sshfs_2_5 https://github.com/libfuse/sshfsCloning into 'sshfs'...remote: Enumerating objects: 19, done.remote: Counting objects: 100% (19/19), done.remote: Compressing objects: 100% (18/18).

Refer tohttp://trac.ffmpeg.org/wiki/HWAccelIntroPlatform API Availability Linux Windows Android Apple Other AMD Intel NVIDIA AMD Intel NVIDIA macOS iOS Raspberry Pi AMF N N N Y ...

####### patchelf## Change ld-linux-XXXX.so### Change with new glibc version [lake@Centos7 hello]$ pwd/home/lake/extra/source/hello### Centos7/RHEL7.x glibc is 2.17 NOT 2.18/2.19 [lake@Centos7 hello]$ rpm -qf /lib64/libc.so.6glibc-2.17-78.el7..

[lake@localhost ~]$ cat test_chrt.sh#!/bin/bash## sudo chrt -f 99 /home/lake/test_chrt.sh#dd if=/home/lake/rk15G-size-sd-XXX.img of=/dev/sdd

1. how to generate kernel messages via /dev/kmsg echo "8 4 1 7" >/proc/sys/kernel/print / # echo "<7>Writing critical printk messages from userspace" >/dev/kmsg Writing critical printk messages from userspace ...

1. list service 列出正在运行的 Unit$ systemctl list-units# 列出所有Unit，包括没有找到配置文件的或者启动失败的$ systemctl list-units --all# 列出所有没有运行的 Unit$ systemctl list-units --all --state=inactive# 列出所有加载失败的 Unit$ systemctl list-units --failed# 列出所有正在运行的、类型为 service 的.

1. folder sync scp -r user@server:remove_folder local2. keep symbolic link through tar# On the source server:# cd /path/to/contenttar cf - * | ssh user@destination '(cd /path/to/content; tar xf - )'The files are compressed and...

find obj.XXX -type f -name '*.o' |xargs du -hcs |grep total$38M total53M total21M total

1. Imageffmpeg -pix_fmts ?ffmpeg -i ImageSegmentation_threshold_histogram.jpg -f rawvideo -pix_fmt yuv420p ImageSegmentation_threshold_histogram_4032X3024_yuv420.yuv2. audio$ffmpeg-iINPUT.ape output.wav$ffmpeg-iINPUT.ape outpu...

Microsoft Windows [Version 10.0.18363.1139](c) 2019 Microsoft Corporation. All rights reserved.C:\Windows\SysWOW64>cd c:\Python38c:\Python38>PATHPATH=C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\windows\system32;C:\windows;C:\w.

find . -type f -name "*.tgz" -printf [%f]\\n -exec tar -tf {} \; | grep -iE "[\[]|CompressedfilenameInsideTgz"

Ethernet adapter Ethernet: Connection-specific DNS Suffix . : WindowsHOME IPv4 Address. . . . . . . . . . . : 10.73.197.146 Subnet Mask . . . . . . . . . . . : 255.255.255.01. Step on Windows side Win10 has OpenSSH Server now! Wind...

#-*- coding:UTF-8 -*-# author:Lake Hu :2020/9# -*- coding: utf-8 -*-import time import serialimport reimport randomimport time localtime = time.asctime(time.localtime(time.time()))reboot_timeout_default = 30 read_timeout_default = 5ser = .

http://www.brendangregg.com/Perf/linux_observability_tools.pngeMMC dd/performance check on aarch64########## note bs size will affect performance./ # dd if=/dev/mmcblk0p1 of=/dev/null bs=1 count=1024MB670040576+0 records in6700...

[localroot]$ cat stresstest.exp#!/usr/bin/expectset timeout 60set prompt {~ # }#exp_internal 1set mtc 0set starttime [exec date ]set ip [lindex $argv 0]set NUM 0while { 1 } { set sleeptime [expr int(rand() * 10 + 30)] set NUM [ expr $N.

Rsync through SSHExamplersync -r -l -t -e ssh --include="*.cpp" --include="*.c" --include="*.h" --include='*/' --exclude='*' --progress lake@10.0.0.1:/home/lake/live-git/ live-local rsync -r -l -t -e ssh --include=...

examplecat hello.c#include <stdio.h>int main(){ printf("Hello world \n"); return 1 ;}$ readelf -p .rodata hello-x86String dump of section '.rodata': [ 10] Hello worldExample with toolchaine...