netty tcp tls 输出tls握手日志 -Djavax.net.debug=SSL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 #生成服务端密钥对和证书仓库 keytool -genkey -alias tlsServer -keysize 2048 -validity 365 -keyalg RSA \ -dname "CN=wiloon" -keypass password0 -storepass password0 -keystore server.jks #生成客户端的

证书, x509, keystore, truststore, pem 证书和编码 x509 X.509 证书, 其核心是根据 RFC5280 编码或数字签名的数字文档. 实际上，术语 X.509 证书通常指的是 IETF 的 PKIX 证书和 X.509 v3 证书标准的 CRL 文件，即如

time command 执行命令并计时 【格式】time [-p] command [arguments…] 【说明】 执行命令行"command [arguments…]",命令

bios boot partition https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Disks/zh-cn 1 2 3 4 5 6 7 8 9 (parted)mkpart primary 1 3 (parted)name 1 grub (parted)set 1 bios_grub on (parted)print https://www.cnblogs.com/f-ck-need-u/p/7084627.html BIOS boot partition是一个分区,gnu grub[译注1]用它来引导基于legacy bi

linux 查看分区表类型 You can use parted -l to determine the type of partition table. Eg: $ sudo parted -l Model: ATA TOSHIBA THNSNS25 (scsi) Disk /dev/sda: 256GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 4194kB 32.2GB 32.2GB primary ext4 boot 2 32.2GB 256GB 224GB primary ext4 https://unix.stackexchange.com/questions/120221/gpt-or-mbr-how-do-i-know

redis info instantaneous_input_kbps 每秒读字节数 instantaneous_ops_per_sec 每秒处理指令数 instantaneous_output_kbps 每秒写字节数 keyspace_hitrate Rate of successful lookup of keys in the main dictionary keyspace_hits : 查找数据库键成功的次数。 keyspace_misses : 查找数据库键失败的次数。 latest_fork_usec : 最近一次 fork()

ssh config, sshd config ssh config public key, authorized_keys 1 vim ~/.ssh/authorized_keys ~/.ssh/config https://linux.die.net/man/5/ssh_config https://www.openssh.com/legacy.html 1 2 3 4 5 Host foo Hostname remote.server.com IdentityFile ~/.ssh/id_rsa.github IdentitiesOnly yes port 22 host 这一项 ssh config 的别名, 在命令行里可以直接 ssh foo hostname 远程主机的主机名或 ip IdentityFile 私钥路径 IdentitiesOnly, yes: ssh

Java tls, JSSE Java JSSE Java Secure Socket Extension JDK 中的 JSSE (javax.net.ssl) ,提供了对 SSL 和 TLS 的支持 SSL/TLS 协议 (RFC2246 RFC4346) 处于 TCP/IP 协议与各种应用层协议之间,为数据通讯提供安全支持。 SSL/TLS 记录协议 (SSL/TLS Record Protocol) ,它建立

MySQL view, MERGE, TEMPTABLE 数据库视图 数据库视图的创建是基于SQL SELECT query和JOIN的。视图和表很相似,它也包含行和列,所以可以直接对它进行查询操作。另外大

extundelete linux 数据恢复 http://blog.51cto.com/ixdba/1566856 Linux下高效数据恢复软件extundelete应用实战 推荐 原创南非蚂蚁2014-10-22 17:58:11评论(8)118

install cloud9 ide on debian/ubuntu https://github.com/c9 1 2 3 4 5 6 7 8 9 git clone https://github.com/c9/core sdk cd sdk/ ./scripts/install-sdk.sh node server.js -p 8181 -l 0.0.0.0 -w /our/project/directory/-a : https://www.vultr.com/docs/install-the-cloud9-ide-on-debian-wheezy

AES AES算法简介 AES的全称是Advanced Encryption Standard,意思是高级加密标准。它的出现主要是为了取代DES加密算法的,因为我们都知道

jest https://stackoverflow.com/questions/68956636/how-to-use-esm-tests-with-jest package.json use es module 1 2 3 4 5 6 7 8 9 10 { "type": "module", "devDependencies": { "jest": "^29.7.0" }, "scripts": { "test": "node --experimental-vm-modules ./node_modules/.bin/jest" } } 1 2 3 4 5 # run all test npm run test # run one test npm run test -- infoq.test.js

linux test disk io 1 2 3 time dd if=/dev/zero of=test.dbf bs=8k count=300000 oflag=direct http://blog.csdn.net/zqtsx/article/details/25487185

pixelbook, chromeos, developer mode, crouton developer mode https://www.theverge.com/2017/11/16/16656420/google-pixelbook-chromebook-development-linux-crouton-how-to hold the Esc, Refresh, and power button for a little while and the laptop reboots into Recovery Mode. Once you’re there, you hit Ctrl-D to boot into Developer Mode. 同时按esc refresh, poeer button, 直到出现 recovery mode, 就是提示插入u盘的界面, 这个时候按c

Java string hashing in Go https://www.manniwood.com/2016_03_20/fun_with_java_string_hashing.html 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 func ActualHash(s string) int32 { var h int32 for i := 0; i < len(s); i++ { h = 31*h + int32(s[i]) } return h }

docker basic, commands commands 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 # Docker images by tag docker rmi $(docker images --filter=reference="tag_name_0" -q) # Docker查看容器完整的容器 ID 和镜像 ID docker ps -a --no-trunc docker exec nexus3 cat /nexus-data/admin.password docker ps --filter"name=test-nginx" docker ps --format

ansible create file 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 - name: ensure file exists copy: content: "" dest: /etc/nologin force: no group: sys owner: root mode: 0555 https://stackoverflow.com/questions/28347717/how-to-create-an-empty-file-with-ansible

linux network https://segmentfault.com/a/1190000008836467 https://segmentfault.com/a/1190000008926093 https://segmentfault.com/a/1190000009249039

REST REST Representational State Transfer