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2007年6月2日—基本bash程式設計(2)-Variable.前言.Variable(變數),是每個程式語言中都不可或缺的重要角色之一,當然shellscript也不例外!,Commandsubstitutionallowstheoutputofacommandtoreplacethecommanditself.Bashperformstheexpansionbyexecutingcommandandreplacingthecommand ...,,Avariablemaybeplacedanywhereinascript(oronthecommandlineforthatmatter)and,whenrun,Bashwillreplaceitwiththevalueofthevariable.T...
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Linux Bash環境下,輸入指令不留痕跡的作法
其實在系統上留下「輸入指令的記錄」是個安全的作法,至少下了什麼指令會有一個依據,萬一下錯指令還可以看看到底做錯了什麼,只是被老闆砍頭也要有個完整的紀錄,總不能說"好像"下錯指令,或許有些錯誤不是該自...