Xa uloga kwindlela yeUNIX, ujongano lwakho olungundoqo kwindlela ibizwa ngokuba yiUNIX SHELL. Le yinkqubo ekubonisa ngophawu lwedola ($) ngokukhawuleza. Olu ncedo luthetha ukuba iqokobhe likulungele ukwamkela imiyalelo yakho echwetheziweyo. … Bonke basebenzisa uphawu lwedola njengoncedo lwabo.
Wenza ntoni i$? Ndithetha kwi Linux?
$? -Imo yokuphuma yomyalelo wokugqibela owenziweyo. … Kwiqokobhe lemibhalo eshicilelweyo, le yinkqubo ye-ID abasebenzela phantsi kwayo.
Yintoni i-$? Kwi-Shell?
$? lutshintsho olukhethekileyo kwiqokobhe elifunda ubume bokuphuma bomyalelo wokugqibela owenziweyo. Emva kokuba umsebenzi ubuyile, $? inika imo yokuphuma yomyalelo wokugqibela owenziweyo kumsebenzi.
Wenza ntoni i$? Ndithetha kwi Unix?
$? = ibingumyalelo wokugqibela ube yimpumelelo. Impendulo ngu-0 othetha ukuthi 'ewe'.
Yintoni idola kwiskripthi seqokobhe?
Lo msebenzi wolawulo usetyenziswa ukujonga ubume bomyalelo wokugqibela owenziweyo. Ukuba imeko ibonisa '0' ngoko umyalelo waphunyezwa ngempumelelo kwaye ukuba ubonisa '1' ngoko umyalelo wawungaphumeleli. Ikhowudi yokuphuma yomyalelo wangaphambili igcinwe kuguqulo lweqokobhe $?.
Kutheni iLinux isetyenziswa?
I-Linux kudala isisiseko sezixhobo zothungelwano lwentengiso, kodwa ngoku yeyona nto iphambili kwiziseko zophuhliso lweshishini. I-Linux yinkqubo esebenzayo kunye neyinyani, evulekileyo ekhutshwe ngo-1991 kwiikhomputha, kodwa ukusetyenziswa kwayo kuye kwanda ukuxhasa iinkqubo zeemoto, iifowuni, iiseva zewebhu kwaye, kutshanje, izixhobo zenethiwekhi.
Yintoni $0 iqokobhe?
$0 Yandisa kwigama leqokobhe okanye iqokobhe leskripthi. Oku kusetwa kuqaliso lweqokobhe. Ukuba iBash icelwa ngefayile yemiyalelo (bona iCandelo 3.8 [Izikripthi zeShell], iphepha 39), i-$0 imiselwe kwigama laloo fayile.
Ndilazi njani iqokobhe lam langoku?
Indlela yokukhangela ukuba leliphi iqokobhe endilisebenzisayo: Sebenzisa le miyalelo ilandelayo yeLinux okanye yeUnix: ps -p $$ – Bonisa igama lakho langoku leqokobhe ngokuthembekileyo. echo "$SHELL" - Shicilela iqokobhe lomsebenzisi wangoku kodwa hayi iqokobhe elisebenzayo kwintshukumo.
Usebenza njani uShell kwiLinux?
Iqokobhe kwindlela yokusebenza ye Linux ithatha igalelo kuwe ngendlela yemiyalelo, liyiqhube, kwaye emva koko inike imveliso. Lujongano apho umsebenzisi asebenza kwiinkqubo, imiyalelo, kunye nezikripti. Iqokobhe liyafikelelwa yitheminali eyiqhubayo.
Yintoni iqokobhe kuBuntu?
Iqokobhe yinkqubo ebonelela ngemveli, iteksti-kuphela ujongano lomsebenzisi kwiindlela zokusebenza ezifana ne-Unix.
Kutheni sisebenzisa i-Unix?
Unix yinkqubo yokusebenza. Ixhasa i-multitasking kunye nokusebenza kwabasebenzisi abaninzi. I-Unix isetyenziswa kakhulu kuzo zonke iintlobo zeenkqubo zekhompuyutha ezifana nedesktop, ilaptop, kunye neeseva. Kwi-Unix, kukho ujongano lomsebenzisi weGraphical olufana neefestile ezixhasa ukukhangela okulula kunye nemeko yenkxaso.
Yintoni ebizwa ngesimboli kwi-Unix?
Ke, kwi-Unix, akukho ntsingiselo ikhethekileyo. Iinkwenkwezi yi "globbing" uphawu kumaqokobhe e-Unix kwaye likhadi lasendle lalo naliphi na inani labalinganiswa (kuquka u-zero). ? ngomnye umlinganiswa oqhelekileyo weglowusi, ongqamanisa ngqo omnye wawo nawuphi na umlinganiswa. *.
Ithetha ntoni i-$@?
$@ iphantse yafana ne $* , zombini zithetha "zonke iimpikiswano zomgca womyalelo". Zihlala zisetyenziselwa ukudlulisa zonke iingxoxo kwenye inkqubo (ngaloo ndlela zenza isisongelo esirhangqe enye inkqubo).
Ingaba i-$3 iza kuthetha ntoni kwiskripthi seqokobhe?
Ingcaciso: Inkqubo yomntwana yinkqubo engaphantsi eqaliswe yenye inkqubo, umzali wayo. Iiparamitha zendawo. Iingxabano ezigqithiselwe kwiskripthi ukusuka kumgca womyalelo [1] : $0, $1, $2, $3. . . $0 ligama lombhalo ngokwawo, $1 yingxabano yokuqala, $2 eyesibini, $3 eyesithathu, njalo njalo.
Yeyiphi kwezi zilandelayo engelilo iqokobhe?
Yeyiphi kwezi zilandelayo engelulo uhlobo lweqokobhe? Ingcaciso: Iqokobhe lePerl ayilohlobo lweqokobhe kwi-unix. 2.