Linux shell指令碼基礎學習這部分如果只看前面間的理論部分雖然有一些例子,但是還不夠系統,這裡將以具體執行個體給大家展現Linux shell指令碼編程,以協助大家完善Linux shell基礎的學習和提高。第2部分 執行個體現在我們來討論編寫一個指令碼的一般步驟。任何優秀的指令碼都應該具有協助和輸入參數。並且寫一個偽指令碼(framework.sh),該指令碼包含了大多數指令碼都需要的架構結構,是一個非常不錯的主意。這時候,在寫一個新的指令碼時我們只需要執行一下copy命令:cp
for迴圈樣本for迴圈文法:for VARIABLE in 1 2 3 4 5 .. Ndo command1 command2 commandNdone #!/bin/bashfor i in 1 2 3 4 5doecho "Welcome $i times"donebash version 3.0+版本#!/bin/bash for i in {1..5}do echo "Welcome $i times"donebash
前言: 無論什麼程式設計語言都離不開條件判斷。SHELL也不例外。 if list then do something here elif list then do another thing here else do something else here fi EX1:#!/bin/shSYSTEM=`uname -s` #擷取作業系統類型,我本地是linuxif [
I used to deploy our application into 200 centos machine, and these machines are far from my current office site. The deployment is simple.Firstly sync the code and build in the Head Linux ( one of the machine in the Linux farm). Then copy the
Unix-like systems such as linux always have a single file system tree, regardless of how many drives or storage devices are attached to the computer.Storage devices are attached( mounted ) at various points on the tree according to the system
預設情況下,Ubuntu終端會輸出完整路徑,在路徑名很長的時候,提示方式很不友好,通過以下步驟修改PS1變數的設定,可以讓終端輸出相對路徑。類似於紅帽系統的風格。修改思路:將w修改為W顯示絕對路徑,並添加[]括弧。首先修改/etc/bash.bashrc檔案leo@leo-laptop:~$ sudo vim /etc/bash.bashrc修改如下內容:#PS1=’${debian_chroot:+($debian_chroot)}u@h:w$ ‘PS1=’[${debian_chroot:+