Ndithelekisa njani amaxabiso amabini aguquguqukayo kwi-Unix?
Thelekisa amanani kwi-Linux Shell Script
- num1 -eq num2 khangela ukuba inani lesi-1 lilingana nenani lesi-2.
- inani1 -ge num2 lijonga ukuba inani lesi-1 likhulu okanye lilingana nenani lesi-2.
- i-num1 -gt i-num2 ijonga ukuba inani lesi-1 likhulu kune-2nd inani.
- inani1 -le num2 lijonga ukuba inani lesi-1 lingaphantsi okanye liyalingana nenani lesi-2.
Uthelekisa njani iinguqu ezimbini kwiskripthi?
Ungayisebenzisa i [ umyalelo (ikwakhona njengovavanyo ) okanye [[ ... ]] isivakalisi esikhethekileyo ukuthelekisa iinguqu ezimbini. Qaphela ukuba ufuna izithuba ngaphakathi kwizibiyeli: izibiyeli luphawu olwahlukileyo kwi-syntax yeqokobhe.
Ujonga njani ukuba iinguqu ezimbini ziyalingana kwiskripthi seqokobhe?
Bash - Jonga ukuba iintambo ezimbini ziyalingana
- Sebenzisa == umsebenzisi nge-bash ukuba isitatimenti ukujonga ukuba imitya emibini iyalingana.
- Ungasebenzisa != ukujonga ukuba imitya emibini ayilingani.
- Kufuneka usebenzise isithuba esinye phambi nasemva kwe == kunye != nabaqhubi.
Ngaba sinokuthelekisa iinguqu ezimbini?
Ungathelekisa iinguqu ezi-2 kwi ukuba ingxelo usebenzisa i == umsebenzisi.
Yintoni injongo yeUnix?
Unix yinkqubo yokusebenza. Yona ixhasa ukwenza izinto ezininzi kunye nokusebenza kwabasebenzisi abaninzi. I-Unix isetyenziswa kakhulu kuzo zonke iintlobo zeenkqubo zekhompuyutha ezifana nedesktop, ilaptop, kunye neeseva. Kwi-Unix, kukho ujongano lomsebenzisi weGraphical olufana neefestile ezixhasa ukukhangela okulula kunye nemeko yenkxaso.
Ndiwathelekisa njani amagama amabini kwiskripthi seqokobhe?
Ukuthelekisa abaSebenzi
Xa uthelekisa imitya kwi-Bash ungasebenzisa aba baqhubi balandelayo: umtya1 = umtya2 kunye nomtya1 == umtya2 – Umsebenzisi wokulingana ubuyisela inyaniso ukuba ii-operands ziyalingana. Sebenzisa = umsebenzisi ngovavanyo [ umyalelo. Sebenzisa i == umsebenzisi ngo [[ umyalelo wongqamaniso lwepateni.
Ulubhengeza njani utshintsho kwiqokobhe?
Unix / Linux – Ukusebenzisa iiguquguquko zeShell
- Ukuchaza iiguquguquko. Uguquguquko luchazwa ngolu hlobo lulandelayo − variable_name=variable_value. …
- Ukufikelela kwiiNqobo. Ukufikelela kwixabiso eligcinwe kuguquguquko, isimaphambili segama laso ngophawu lwedola ($) − ...
- Funda-kuphela Iiguquguquko. …
- UkungaSeti iiguquguquko.
Uwuseta njani umahluko kwi-bash?
Eyona ndlela ilula yokuseta ukuguquguquka kokusingqongileyo kwi-Bash kuku sebenzisa igama elingundoqo elithi "thumela ngaphandle" lilandelwa ligama eliguquguqukayo, uphawu olulinganayo kunye nexabiso eliza kwabelwa imeko-bume eguquguqukayo.
Yintoni i-bin sh Linux?
/bin/sh yi ephunyeziweyo emele iqokobhe lenkqubo kwaye ngokuqhelekileyo iphunyezwe njengekhonkco elinomfuziselo elikhomba okuphunyeziweyo nokuba leliphi iqokobhe eliliqokobhe lenkqubo. Iqokobhe lenkqubo ngokwesiseko liqokobhe elingagqibekanga elimele ukusebenziswa siscript.
Ndisiqhuba njani iskripthi se-bash?
Yenza iSikripthi se-Bash siphunyezwe
- 1) Yenza ifayile yokubhaliweyo entsha nge . sh ulwandiso. …
- 2) Yongeza #!/bin/bash phezulu kwayo. Oku kuyimfuneko kwinxalenye ethi "yenza iphunyezwe".
- 3) Yongeza imigca oqhele ukuyichwetheza kumgca womyalelo. …
- 4) Kumgca womyalelo, sebenzisa i-chmod u+x YourScriptFileName.sh. …
- 5) Yiqhube nanini na xa ufuna!