查看earlyoom停止的程式

1

sudo journalctl -u earlyoom | grep sending

參考:
https://github.com/rfjakob/earlyoom
https://zhangjk98.xyz/early-oom-and-oomd-for-out-of-memory/

1

echo "check_certificate = off" >> ~/.wgetrc

參考:
https://superuser.com/a/1045163

查看不同網段以外的流量，並且指定eno2網卡

1

sudo iftop -F 10.179.3.0/24 -i eno2

參考:

https://blog.csdn.net/qq_35995514/article/details/136542702

https://cloud.tencent.com/developer/article/1827834

https://www.alibabacloud.com/help/en/ecs/support/query-and-case-analysis-of-linux-network-traffic-load

參考:

https://blog.csdn.net/qq_35995514/article/details/136542702

https://cloud.tencent.com/developer/article/1827834

https://www.alibabacloud.com/help/en/ecs/support/query-and-case-analysis-of-linux-network-traffic-load

ffmpeg RTSP串流品質檢測

1

ffmpeg -i rtsp://<伺服器IP>:<埠>/<路徑> -t 30 output.mp4

找出最近一次重啟時間

1

last reboot| head -2

查詢/var/log下的各種log並且找到重啟前的錯誤，包含messages, syslog, dmesg, and kern.log

參考:
https://learnlinux.hashnode.dev/how-to-troubleshooting-unexpected-linux-server-reboot

Windows

1

route -p add 10.179.101.0 mask 255.255.255.0 10.179.10.254 metric 10

Ubuntu

1

sudo ip route add 10.179.2.0/24 via 10.179.20.254 dev enp75s0f1

啟動server

1

hexo server

新增文章

1

hexo new [layout] "文章名稱"

layout 可以是post, page 或 draft

Generate static files

1

$ hexo generate

More info: Generating

Deploy to remote sites

1

$ hexo deploy

More info: Deployment

linker設定rpath的選項範例如下

1

gcc -Wl,-rpath=/opt/nvidia/deepstream/deepstream-6.4/lib test.cpp

RPATH有一個特殊識別符號$ORIGIN，表示執行檔的所在目錄

1

gcc -Wl,-rpath='$ORIGIN/../lib' test.cpp

查看函式庫的rpath

1

readelf -d libnvds_rest_server.so |head -20

或是

1

objdump -x libnvds_rest_server.so |grep 'R.*PATH'

CMake使用兩個變數來控制RPATH：INSTALL_RPATH和BUILD_RPATH，install步驟的rpath是INSTALL_RPATH

1
2

SET_TARGET_PROPERTIES(nvds_rest_server
    PROPERTIES INSTALL_RPATH "/opt/nvidia/deepstream/deepstream-6.4/lib")

cmake的另一個設定RPATH的方法
https://discourse.cmake.org/t/library-rpath-resolution/887/7
SET(CMAKE_SKIP_BUILD_RPATH FALSE)
SET(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
SET(CMAKE_INSTALL_RPATH “${ORIGIN}”)

參考:
https://www.cnblogs.com/chanyuantiandao/p/16553199.html

查詢硬碟空間

1

du -sh ./*

有時候硬碟空間可能因為資料夾沒有mount，所以雖然占用硬碟空間但是du無法顯示出來，可以使用下面的指令來查看:

1

shopt -s dotglob && sudo mount / /mnt -o bind && du -sh /mnt/* && umount /mnt

參考:
https://www.reddit.com/r/linuxquestions/comments/1ed61ri/root_directory_full_despite_du_adding_up_to_55_of/

https://www.onejar99.com/linux-command-du/