常用小工具集

EXPORT

#   if defined( MP4V2_EXPORTS )
#       define MP4V2_EXPORT __declspec(dllexport)
#       define MP4V2_EXPORT __declspec(dllimport)
#       define MP4V2_EXPORT
#   define MP4V2_EXPORT __attribute__((visibility("default")))

gdb--带参数

https://www.cnblogs.com/helloweworld/p/4372936.html

SIGPIPE

struct sigaction sa;
sa.sa_handler = SIG_IGN;
sigaction( SIGPIPE, &sa, 0 );


#include <signal.h>
void handle_pipe(int sig)
{
//do nothing
}
int main()
{
    struct sigaction sa;
    sa.sa_handler = handle_pipe;
    sigemptyset(&sa.sa_mask);
    sa.sa_flags = 0;
    sigaction(SIGPIPE,&sa,NULL);
//do something
}

https://www.cnblogs.com/zxc2man/p/7660240.html

linux kernel debug

https://www.ibm.com/developerworks/cn/linux/l-kdbug/index.html

https://www.ibm.com/developerworks/cn/linux/l-cn-dumpanalyse/index.html

https://www.cnblogs.com/dhcn/p/10898843.html

linux coredump

ulimit -c

ulimit -c unlimited

ulimit -a

vi /etc/profile
ulimit-c unlimited

vi /etc/rc.local
echo "/data/coredump/core.%e.%p" >/proc/sys/kernel/core_pattern

gdb
core-file /data/coredump/core.test.9198

#gdb ./test core.xxxxx

where or bt

#include<stdio.h>

void core_test1(){
 int i=0;
 scanf("%d",i);
 printf("%d
",i);
}
void core_test2(){
 char *ptr = "my name is hello world";
 *ptr = 0;
}
 
int main(){
 core_test1();
 return 0;
}

g++ -g core.cpp -o test

https://blog.csdn.net/MOU_IT/article/details/88903668

ps -ef |grep gb28181-ms

screen -ls

screen -r id

screen -D -r id

ctrl + a + d 退出

linux文件/目录属性

-rw------- (600) 只有所有者才有读和写的权限

-rw-r--r-- (644) 只有所有者才有读和写的权限，组群和其他人只有读的权限

-rwx------ (700) 只有所有者才有读，写，执行的权限

-rwxr-xr-x (755) 只有所有者才有读，写，执行的权限，组群和其他人只有读和执行的权限

-rwx--x--x (711) 只有所有者才有读，写，执行的权限，组群和其他人只有执行的权限

-rw-rw-rw- (666) 每个人都有读写的权限

-rwxrwxrwx (777) 每个人都有读写和执行的权限

chrome离线安装

https://www.jianshu.com/p/7c93b62387ab

linux nc

https://linux.die.net/man/1/nc

Ubuntu环境下SSH服务安装、SSH远程登录以及SSH数据传输

https://www.cnblogs.com/asyang1/p/9467646.html

minicom配置

sudo minicom -s

dos2unix

sudo apt-get -y install dos2unix

find . -type f -exec dos2unix {} ;

windows下对127.0.0.1抓包, RawCap很方便

https://blog.csdn.net/sunny_ss12/article/details/51460848

code::blocks clion atom vscode

ubuntu安装atom

https://blog.csdn.net/hao5743/article/details/52056194

ubuntu安装vscode

sudo apt-get install software-properties-common python-software-properties
sudo add-apt-repository ppa:ubuntu-desktop/ubuntu-make
sudo apt-get update
sudo apt-get install ubuntu-make
umake web visual-studio-code
umake web visual-studio-code --remove

code.visualstudio.com

sudo dpkg -i code_1.44.2-1587059832_amd64.deb

gcc升降级

https://blog.csdn.net/agenih/article/details/79491366

https://blog.csdn.net/betty13006159467/article/details/78394974

git 一个分支完全覆盖另一个分支

１，git push origin develop:master -f
就可以把本地的develop分支强制(-f)推送到远程master

２，
git checkout master // 切换到旧的分支
git reset –hard develop // 将本地的旧分支 master 重置成 develop
git push origin master –force // 再推送到远程仓库

liaoxuefeng git

https://www.liaoxuefeng.com/wiki/0013739516305929606dd18361248578c67b8067c8c017b000/001375840038939c291467cc7c747b1810aab2fb8863508000

14、树梅派

树梅派应用56：用树莓派搭建Git私有服务器

https://blog.csdn.net/huayucong/article/details/54407143

树梅派应用58：使用ngrok将树莓派web服务映射到公网

https://blog.csdn.net/huayucong/article/details/54407189

13、Linaro Toolchain

https://www.linaro.org/downloads/

Linaro provides monthly GCC source archive snapshots of the current Linaro GCC release branch, as well as quarterly releases of pre-built Linaro GNU cross-toolchain binary archives.

The following tables provide direct access to the most common Linux and bare-metal ABI variants of the Linaro binary cross-toolchain quarterly releases. Both x86_64 Linux and Mingw32 (MS Windows compatible) host binaries are provided:

Latest Linux Targeted Binary Toolchain Releases

arm-linux-gnueabihf	32-bit ARMv7 Cortex-A, hard-float, little-endian	Release-Notes	Binaries	Source
armv8l-linux-gnueabihf	32-bit ARMv8 Cortex-A, hard-float, little-endian	Release-Notes	Binaries	Source
aarch64-linux-gnu	64-bit ARMv8 Cortex-A, little-endian	Release-Notes	Binaries	Source

Latest Bare-Metal Targeted Binary Toolchain Releases

arm-eabi	32-bit ARMv7 Cortex-A, soft-float, little-endian	Release-Notes	Binaries	Source
aarch64-elf	64-bit ARMv8 Cortex-A, little-endian	Release-Notes	Binaries	Source

12、交叉编译lrzsz实现arm串口xmodem,ymodem,zmodem协议的lrz和lsz数据收发

http://blog.chinaunix.net/uid-20564848-id-74714.html

11、各种视音频封装格式分析

http://blog.csdn.net/leixiaohua1020/article/details/17934487

10、USB 调试工具（python2.7 + Tkinter + pyusb/pywinusb）

http://www.cnblogs.com/jakeyChen/p/4463530.html

https://github.com/Qbicz/ChibiOS-mems-usb

9、串口调试工具(Python2.7+pyserial+Tkinter)

http://www.cnblogs.com/jakeyChen/p/4465281.html

8、在windows上用adb安装android apk

adb工具：http://files.cnblogs.com/files/dong1/adb1.0.32.zip

用ADB(Android Debug Bridge)实时监测Android程序的运行

https://blog.csdn.net/peibaoyi/article/details/9422487

7、VIM安装插件

1）sudo apt-get install ctags

2）ctags -R

http://www.cnblogs.com/ynxf/p/5922661.html

http://www.cnblogs.com/zhaoyl/p/4078164.html

6、CheckTool：CRC校验、累加和校验、异或和校验专业校验工具V1.1

http://www.cnblogs.com/tdyizhen1314/archive/2012/10/10/2718808.html

5、keil mdk __attribute__用法

4、beyond compare 30天评估期到期

beyond compare 4你的30天评估期到期，那时候也打不开软件，输入不了注册码，然后也不想花过多时间搞这玩意，简单，一步解决问题。

找到beyond Compare 4文件夹下面的BCUnrar.dll，将其删掉或者重命名，再重新打开接着使用。windows下可行，linux没试。

3、PL2303驱动

http://www.prolific.com.tw/US/ShowProduct.aspx?pcid=41&showlevel=0017-0037-0041

2、repo应用

下了好几个repo都不靠谱，运行报错

fatal: Cannot get https://gerrit.googlesource.com/git-repo/clone.bundle

fatal: error [Errno 101] Network is unreachable

解决方法,先单独克隆repo,然后将git-repo里面的repo文件复制到用户根目录下的bin目录里，在同步源码的工作目录新建.repo文件夹，把git-repo重命名为repo复制到.repo目录下：

git clone https://gerrit-googlesource.lug.ustc.edu.cn/git-repo

重新初始化：

repo init -u https://github.com/intel-ndg/manifest -b v4.1 -m default.xml

同步开始

repo sync -j5

1、代码托管

1）github公共空间免费，私有空间收费。

2）gitlab完全免费再加送整个系统

3）bitbucket比github更好用

git 一个分支完全覆盖另一个分支

１）

git push origin develop:master -f
就可以把本地的develop分支强制(-f)推送到远程master

２）
git checkout master // 切换到旧的分支
git reset –hard develop // 将本地的旧分支 master 重置成 develop
git push origin master –force // 再推送到远程仓库

git合并分支

dong@ubuntu:~/z1/demo$ git branch
* aaa
dong@ubuntu:~/z1/demo$ git checkout -b xxx
切换到一个新分支 'xxx'
dong@ubuntu:~/z1/demo$ git branch
aaa
* xxx
dong@ubuntu:~/z1/demo$ git merge aaa
Already up-to-date.
dong@ubuntu:~/z1/demo$ git branch -D aaa
已删除分支 aaa（曾为 439e803）。
dong@ubuntu:~/z1/demo$ git branch
* xxx
dong@ubuntu:~/z1/demo$ git push -u origin xxx
Counting objects: 62, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (9/9), done.
Writing objects: 100% (9/9), 781 bytes | 0 bytes/s, done.
Total 9 (delta 7), reused 0 (delta 0)
To git@172.16.23.76:/home/pi/workspace/git/demo.git
   e7b3d0c..439e803 xxx -> xxx
分支 xxx 设置为跟踪来自 origin 的远程分支 xxx。
dong@ubuntu:~/z1/demo$ git log
commit 439e8034030ae75ba112740f3662769eded6c49b
Author: dong <15019442511@163.com>
Date:   Thu Sep 27 02:28:24 2018 -0700

    合并aaa分支

临时合并分支
git checkout -b tmp
git branch --set-upstream-to=origin/tmp tmp
git pull

log:
dong@ubuntu:~/1/qbox10$ git checkout -b zdd
M   application/business_layer/src/bl_warn.c
切换到一个新分支 'zdd'
dong@ubuntu:~/1/qbox10$ git status
位于分支 zdd
尚未暂存以备提交的变更：
（使用 "git add <文件>..." 更新要提交的内容）
（使用 "git checkout -- <文件>..." 丢弃工作区的改动）

   修改:         application/business_layer/src/bl_warn.c

未跟踪的文件:
（使用 "git add <文件>..." 以包含要提交的内容）

   lib/nmea/lib/libnmea_so.so
   source/rtklib/src/interface/libinterface.a
   source/rtklib/src/interface/libmain.a

修改尚未加入提交（使用 "git add" 和/或 "git commit -a"）
dong@ubuntu:~/1/qbox10$ git merge wwx
Already up-to-date.
dong@ubuntu:~/1/qbox10$ git add application/business_layer/src/bl_warn.c
dong@ubuntu:~/1/qbox10$ git commit -m "
> 适配服务器角色
> "
[zdd eb88d3a] 适配服务器角色
1 file changed, 4 insertions(+), 4 deletions(-)
dong@ubuntu:~/1/qbox10$ git branch -D wwx
已删除分支 wwx（曾为 b1a4a13）。
dong@ubuntu:~/1/qbox10$ git branch
* zdd
dong@ubuntu:~/1/qbox10$ git push -u origin zdd
Counting objects: 54, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (6/6), done.
Writing objects: 100% (6/6), 531 bytes | 0 bytes/s, done.
Total 6 (delta 5), reused 0 (delta 0)
To git@172.16.23.248:/home/workspace/git/qbox10.git
   6141bb1..eb88d3a zdd -> zdd
分支 zdd 设置为跟踪来自 origin 的远程分支 zdd。
dong@ubuntu:~/1/qbox10$

合并分支

dong@ubuntu:~$ git clone -b merge git@172.16.xx.yyy:/home/workspace/git/project.git
正克隆到 'project'...
remote: Counting objects: 23917, done.
remote: Compressing objects: 100% (14341/14341), done.
remote: Total 23917 (delta 12822), reused 18505 (delta 8786)
接收对象中: 100% (23917/23917), 293.18 MiB | 11.13 MiB/s, done.
处理 delta 中: 100% (12822/12822), done.
检查连接... 完成。
dong@ubuntu:~$ cd project/
dong@ubuntu:~/project$ git branch -a
* merge
remotes/origin/HEAD -> origin/master
remotes/origin/master
remotes/origin/merge
remotes/origin/zdd
dong@ubuntu:~/project$ git chekout zdd
git：'chekout' 不是一个 git 命令。参见 'git --help'。

您指的是这个么？
   checkout
dong@ubuntu:~/project$ git checkout zdd
分支 zdd 设置为跟踪来自 origin 的远程分支 zdd。
切换到一个新分支 'zdd'
dong@ubuntu:~/project$ git merge merge
更新 e9b175d..ffa355b
Fast-forward
.gitignore                                         |    2 +
CMakeLists.txt                                     |   24 +-

...

...
dong@ubuntu:~/project$ git push origin zdd
Total 0 (delta 0), reused 0 (delta 0)
To git@172.16.xx.yyy:/home/workspace/git/project.git
e9b175d..ffa355b zdd -> zdd
dong@ubuntu:~/project$

4步

git clone -b tmp git@172.16.xx.yyy:/home/workspace/git/project.git

git branch -a

git chekout zdd

git merge tmp

ssh key

https://blog.csdn.net/yunna520/article/details/83346207