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loop

for loop for i in var1 var2 var3; do echo $i; done for ((i=1;i<=10;i++)); do echo $i; done ...

Installation

Docker Compose The latest download: https://docs.docker.com/compose/install/ sudo curl -L "http...

ssh

連接遠端主機的設定參數 $ ssh -F ~/.ssh/config -G remote-host-name user root hostname 173.82.136.138 port...

Xdebug

Xdebug is an extension for PHP to assist with debugging and development. Xdebug contains several ...

String Manipulation 字串處理

字串長度 my_string="abhishek" echo "length is ${#my_string}" Using expr str="my string" length=$...

Quickstart

Login and Configure user Default login: Admin / zabbix Adding User) Administration -> Users  

vSphere: Import Virtualbox ova Image

Export from Virtualbox 匯出 VM 至一個 *.ova image,格式選 OVF1.0 (非必要)。 Import to vSphere 6 Server ...

Installation

Tutorials RHEL7/8: https://www.zabbix.com/documentation/current/manual/installation/install_fr...

Yum

系統更新 yum repolist enabled 查詢所有可更新的套件 yum list updates 更新所有套件 yum update --disablerepo=ep...

CentOS 7 Tips

Post-Tasks to Minimal Install Chrony Screen vim-enhanced Rsync mailx bind-utils (with dig...

Requirements

Hardware      

Q & A

ARP Cache 不會更新 問題說明:兩部相同規格的 Linux 主機,平時互作備援,網路設定各有一個固定 IP 與共用一個 VIP,VIP 使用 Alias IP 方式。每次移動 VIP ...

AIX Configure SNMP

Reference IBM AIX: How To Configure Community based SNMP And SNMP Traps

Rsync

限制傳檔的網路頻寬 --bwlimit=30000 30000 = 30000 KB/ps = 30 MB/ps 本機內不同個資料夾做複製或同步 rsync -av --dele...

ps

以 PID 查詢 ps -fp <PID> ps -fp <PID#1>,<PID#2>,<PID#3> 分析CPU/Memory使用CP...

fsck

教學連結 Check and Repair Filesystem Errors With fsck Command in Linux

grep

教學網站 http://www.cyberciti.biz/faq/grep-regular-expressions/ https://www.ubuntupit.com/practic...

管理與操作

查出目前使用哪種 SHELL ps -p $$ echo $0 echo $SHELL 執行 SHELL 的方式 sh file . file source file 常用鍵盤...

jpackage in Java 14

jpackage is a command-line tool to create native installers and packages for Java applications. ...

Subnet mask v.s. CIDR

Netmask Netmask (binary) CIDR Notes ______________________...