Uwujonga njani umgca kwi-Unix?
Ubala njani imigca kwifayile kwi UNIX/Linux
- Umyalelo othi "wc -l" xa uqhutywa kule fayile, ukhupha ubalo lomgca kunye negama lefayile. $ wc -l file01.txt 5 file01.txt.
- Ukushiya igama lefayile kwisiphumo, sebenzisa: $ wc -l < file01.txt 5.
- Ungasoloko unikezela ngemveliso yomyalelo kumyalelo we-wc usebenzisa umbhobho. Umzekelo:
Uwuprinta njani umgca othile kwi-Unix usebenzisa i-SED?
Kweli nqaku le sed series, siza kubona indlela yokuprinta umgca othile usebenzisa print(p) umyalelo we sed. Ngokufanayo, ukuprinta umgca othile, beka inombolo yomgca phambi ko 'p'. I-$ ibonisa umgca wokugqibela.
Ubala njani imigca eyodwa kwi-Unix?
Ubonisa njani ukubala inani lamaxesha umgca owenzekileyo. Ukukhupha inani lezehlo zosetyenziso lomgca i -c ukhetho ngokudibanisa ne uniq . Oku kulungiselela ixabiso lenani kwimveliso yomgca ngamnye.
Ndizifumana njani iifayile ezili-10 eziphezulu kwiLinux?
Umyalelo wokufumana iiFayile eziPhezulu eziLikhulu kwiLinux
- I-command -h inketho: ukubonisa ifayile kwifom yefomathi efundekayo, kwii-Kilobyte, i-Megabytes kunye neGigabyte.
- ye-command-option: Bonisa inani elipheleleyo kwiingxabano.
- du umyalelo -x ukhetho : Tsiba abalawuli. …
- ukukhetha umyalelo -okhetho: Ukuguqula umphumo wokuthelekiswa.
Uthini umyalelo wokubonisa iilayini ezili-10 zokuqala zefayile kwiLinux?
Umyalelo oyintloko, njengoko igama lisitsho, printa inani eliphezulu le-N ledatha yegalelo elinikiweyo. Ngokungagqibekanga, iprinta iilayini ezili-10 zokuqala zeefayile ezikhankanyiweyo. Ukuba ngaphezu kwegama elinye lefayile linikezelwe ngoko idatha kwifayile nganye ilandelwa igama layo lefayile.
Yintoni ukusetyenziswa kwe-awk kwiLinux?
I-Awk sisixhobo esenza ukuba umdwelisi wenkqubo abhale iinkqubo ezincinci kodwa ezisebenzayo ngendlela yeengxelo ezichaza iipateni zokubhaliweyo ekufuneka zikhangelwe kumgca ngamnye woxwebhu kunye nesenzo ekufuneka sithathwe xa umdlalo ufunyenwe ngaphakathi umgca. I-Awk isetyenziswa kakhulu ukuskena ipateni kunye nokuqhubekeka.
Uwuprinta njani umgca kwi-Unix?
Bhala umbhalo we-bash ukuprinta umgca othile kwifayile
- awk : $>awk '{ukuba(NR==LINE_NUMBER) shicilela $0}' file.txt.
- sed : $>sed -n LINE_NUMBERp file.txt.
- intloko : $>intloko -n LINE_NUMBER ifayile.txt | umsila -n + LINE_NUMBER Apha LINE_NUMBER yi, yeyiphi inombolo yomgca ofuna ukuyiprinta. Imizekelo: Shicilela umgca kwifayile enye.
Ndiyenza njani igrep inombolo ethile yomgca kwi-Unix?
Ukhetho lwe--n (okanye –line-number). ixelela u-grep ukuba abonise inombolo yomgca welayini equlathe umtya ohambelana nepateni. Xa olu khetho lusetyenziswa, i-grep iprinta iimatshisi ukuya kwimveliso eqhelekileyo enenombolo yomgca. Isiphumo esingezantsi sisibonisa ukuba iimatshisi zifumaneka kumgca we-10423 kunye no-10424.
Ngowuphi umyalelo oza kuprinta yonke imigca kwifayile?
umyalelo we-grep kwi Unix/Linux. Isihluzi se-grep sikhangela ifayile yepateni ethile yabasebenzi, kwaye sibonisa yonke imigca equlathe la pateni. Ipatheni ekhangelweyo kwifayile kubhekiswa kuyo njengentetho eqhelekileyo (i-grep imele uphendlo lwehlabathi jikelele lokuchazwa okuqhelekileyo kunye nokuprintwa).
Ndiwubonisa njani umgca we-10 wefayile?
Ngezantsi kukho iindlela ezintathu ezilungileyo zokufumana umgca we-nth wefayile kwi-Linux.
- intloko / umsila. Ukusebenzisa ngokulula indibaniselwano yemiyalelo yentloko nomsila yeyona ndlela ilula. …
- sed. Kukho iindlela ezimbalwa ezintle zokwenza oku nge sed . …
- awk. i-awk ine-NR eyakhelweyo eyakhiweyo egcina umkhondo wefayile/amanani omqolo womsinga.
Ndiyifunda njani ifayile yokubhaliweyo kwi Unix?
Sebenzisa ilayini yomyalelo ukuya kwi-Desktop, emva koko chwetheza ikati myFile. txt . Oku kuya kuprinta imixholo yefayile kumgca wakho womyalelo. Le yingcamango efanayo nokusebenzisa i-GUI ukucofa kabini kwifayile yokubhaliweyo ukuze ubone imixholo yayo.
Singena njani ekuqaleni komgca?
Ukujonga ekuqaleni komgca osetyenziswayo: "CTRL+a". Ukuhamba uye ekupheleni komgca osetyenziswayo: "CTRL + e".