Uwubheka kanjani umugqa ku-Unix?
Ungabala kanjani imigqa efayeleni ku-UNIX/Linux
- Umyalo othi “wc -l” uma usetshenziswa kuleli fayela, ukhipha isibalo somugqa kanye negama lefayela. $ wc -l file01.txt 5 file01.txt.
- Ukuze ukhiphe igama lefayela kumphumela, sebenzisa: $ wc -l < file01.txt 5.
- Ungakwazi njalo ukunikeza okukhipha umyalo kumyalo we-wc usebenzisa ipayipi. Ngokwesibonelo:
Uwuphrinta kanjani umugqa othile ku-Unix usebenzisa i-SED?
Kulesi sihloko sochungechunge lwe-sed, sizobona ukuthi ungaphrinta kanjani umugqa othile usebenzisa umyalo wokuphrinta (p) we-sed. Ngokufanayo, ukuphrinta umugqa othile, beka inombolo yomugqa ngaphambi kuka-'p'. $ ikhombisa umugqa wokugcina.
Uyibala kanjani imigqa eyingqayizivele ku-Unix?
Ungabonisa kanjani isibalo sezikhathi umugqa owenzeke ngazo. Ukukhipha inani lezenzeko zokusetshenziswa komugqa i -c inketho ngokubambisana ne-uniq. Lokhu kulungiselela inani lenombolo ekuphumeni komugqa ngamunye.
Ngiwathola kanjani amafayela aphezulu ayi-10 ku-Linux?
Imiyalo Yokuthola Amafayela Akulu Kakhulu E-Linux
- I-oda -h inketho: ukubonisa amafayela wefomethi kufomethi efundwa ngabantu, kuma-Kilobytes, Megabytes namaGigabytes.
- ye-oda -s inketho: Bonisa inani lempikiswano ngayinye.
- du umyalo -x inketho: Yeqa izinkomba. …
- Hlunga umyalo -okhetho: Shintsha umphumela wokufanisa.
Uyini umyalo wokubonisa imigqa yokuqala yefayela eyi-10 ku-Linux?
Umyalo wekhanda, njengoba igama lisho, phrinta inombolo ephezulu engu-N yedatha yokokufaka okunikeziwe. Ngokuzenzakalelayo, iphrinta imigqa yokuqala eyi-10 yamafayela ashiwo. Uma kunikezwe igama lefayela elingaphezu kwelilodwa khona-ke idatha evela kufayela ngalinye yandulelwa igama lefayela layo.
Kuyini ukusetshenziswa kwe-awk ku-Linux?
I-Awk iyinsiza eyenza umhleli akwazi ukubhala izinhlelo ezincane kodwa eziphumelelayo ngendlela yezitatimende ezichaza amaphethini ombhalo okufanele aseshwe kulayini ngamunye wedokhumenti kanye nesenzo okufanele sithathwe lapho okufanayo kutholakala ngaphakathi umugqa. I-Awk isetshenziswa kakhulu ukuskena iphethini nokucubungula.
Ungaphrinta kanjani umugqa ku-Unix?
Bhala i-bash script ukuze uphrinte umugqa othile efayeleni
- awk : $>awk '{if(NR==LINE_NUMBER) phrinta $0}' file.txt.
- sed : $>sed -n LINE_NUMBERp file.txt.
- ikhanda : $>head -n LINE_NUMBER file.txt | umsila -n + LINE_NUMBER Nansi i-LINE_NUMBER, iyiphi inombolo yomugqa ofuna ukuyiphrinta. Izibonelo: Phrinta umugqa kusuka efayeleni elilodwa.
Ngiyenza kanjani i-grep inombolo ethile yomugqa ku-Unix?
Inketho ye -n ( noma -line-number ) itshela u-grep ukuthi abonise inombolo yomugqa wemigqa equkethe iyunithi yezinhlamvu efana nephethini. Uma le nketho isetshenziswa, i-grep iphrinta okufanayo kokuphumayo okujwayelekile okufakwe kuqala ngenombolo yomugqa. Umphumela ongezansi usikhombisa ukuthi okufanayo kutholakala kulayini 10423 no-10424.
Imuphi umyalo ozophrinta yonke imigqa kufayela?
umyalo we-grep ku-Unix/Linux. Isihlungi se-grep sicinga ifayela ukuze sithole iphethini ethile yezinhlamvu, futhi sibonisa yonke imigqa equkethe leyo phethini. Iphethini eliseshwayo efayelini ibizwa ngokuthi yinkulumo evamile (i-grep imele ukusesha emhlabeni jikelele kwenkulumo evamile nokuphrinta).
Ngiwubonisa kanjani umugqa we-10 wefayela?
Ngezansi kunezindlela ezintathu ezinhle zokuthola umugqa we-nth wefayela ku-Linux.
- ikhanda / umsila. Ukusebenzisa nje inhlanganisela yemiyalo yekhanda nomsila cishe kuyindlela elula kakhulu. …
- sed. Kunezindlela ezimbalwa ezinhle zokwenza lokhu nge-sed. …
- awu. I-awk ine-NR eyakhelwe ngaphakathi egcina umkhondo wezinombolo zemigqa yefayela/yokusakaza.
Ngilifunda kanjani ifayela lombhalo ku-Unix?
Sebenzisa umugqa womyalo ukuze uye ku-Desktop, bese thayipha ikati i-myFile. txt . Lokhu kuzophrinta okuqukethwe kwefayela emugqeni wakho womyalo. Lona umqondo ofanayo nokusebenzisa i-GUI ukuze uchofoze kabili ifayela lombhalo ukuze ubone elikuqukethe.
Singena kanjani ekuqaleni komugqa?
Ukuzulazula uye ekuqaleni komugqa osetshenziswayo: "CTRL+a". Ukuzulazula ekupheleni komugqa osetshenziswayo: "CTRL+e".