The easiest way to count files in a directory on Linux is to use the “ls” command and pipe it with the “wc -l” command. The “wc” command is used on Linux in order to print the bytes, characters or newlines count.
Ngibala kanjani inani lamagama kufayela le-Linux?
Ukusebenzisa grep -c yedwa izobala inani lemigqa equkethe igama elihambisanayo esikhundleni senani lengqikithi yokufanisa. I- -o inketho yiyo etshela u-grep ukuthi akhiphe umdlalo ngamunye emugqeni oyingqayizivele bese u-wc -l etshela i-wc ukuthi ibale inombolo yemigqa. Yile ndlela inani eliphelele lamagama ahambisanayo elitholwa ngayo.
Ngibala kanjani inani lemigqa efayeleni?
Indlela:
- Dala okuhlukile ukuze ugcine indlela yefayela.
- Sebenzisa umyalo we-wc -lines ukubala inani lemigqa.
- Sebenzisa umyalo we-wc -word ukubala inani lamagama.
- Phrinta inombolo yomibili yemigqa kanye nenani lamagama usebenzisa umyalo we-echo.
Uwabala kanjani amafayela ku-UNIX?
Ukuze unqume ukuthi mangaki amafayela ohlwini lwemibhalo lwamanje, faka ls -1 | wc -l. Lokhu kusebenzisa i-wc ukwenza isibalo senani lemigqa (-l) ekuphumeni kuka-ls -1.
Yenzani i-wc ku-Linux?
i-wc imele igama lokubala. Njengoba igama lisho, lisetshenziselwa ikakhulukazi inhloso yokubala. Isetshenziselwa ukuthola inani lemigqa, isibalo samagama, ibhayithi nokubalwa kwezinhlamvu kumafayela ashiwo kuma-agumenti efayela. Ngokuzenzakalelayo ibonisa okukhiphayo kwamakholomu amane.
Ngiwabala kanjani amagama ku-UNIX?
Ungalithola kanjani inani eliphelele legama / iyunithi yezinhlamvu efayeleni?
- Usebenzisa umyalo we-grep: $ grep -o 'Unix' ifayela | wc -l 4. …
- tr command: $ tr -s ” ” “n” < file | grep -c Unix 4. …
- isixazululo se-awk: $ awk '/Unix/{x++}END{print x}' RS=” ” ifayela 4. …
- Isixazululo se-Perl: $ perl -ne '$x+=s/Unix//g;END{print “$xn”}' ifayela 4. …
- Esinye isixazululo se-Perl:
Ngiwubonisa kanjani umugqa wokuqala wefayela ku-Linux?
Thayipha umyalo wekhanda olandelayo ukuze ubonise imigqa yokuqala eyi-10 yefayela elibizwa ngokuthi “bar.txt”:
- ikhanda -10 bar.txt.
- ikhanda -20 bar.txt.
- sed -n 1,10p /etc/group.
- sed -n 1,20p /etc/group.
- awk 'FNR <= 10' /etc/passwd.
- awk 'FNR <= 20' /etc/passwd.
- perl -ne'1..10 bese uphrinta' /etc/passwd.
- perl -ne'1..20 bese uphrinta' /etc/passwd.
Ngibala kanjani inani lemigqa kuhla lwemibhalo ku-Linux?
Izimpendulo ze-2
- yenza uhlu lwawo wonke amafayela ngaphansi kohla lwemibhalo lwamanje nge-find . – uhlobo f.
- hlunga amafayela kusuka kokuthi "khipha" ama-dirs nge-grep -v.
- I-xargs izofunda uhlu lwamafayela kusuka ku-stdin futhi idlulise wonke amafayela njengezinketho ku-cat .
- ikati lizophrinta wonke amafayela ku-stdout.
- i-wc izobala imigqa.
Ngibala kanjani inani lemigqa efayeleni lombhalo ku-Windows?
Ukuze wenze lokhu, landela izinyathelo ezingezansi.
- Hlela ifayela ofuna ukubuka isibalo somugqa.
- Iya ekugcineni kwefayela. Uma ifayela liyifayela elikhulu, ungakwazi ngokushesha ukufika ekugcineni kwefayela ngokucindezela u-Ctrl + End kukhibhodi yakho.
- Kanye ekupheleni kwefayela, Umugqa: kubha yesimo ubonisa inombolo yomugqa.
Ubala kanjani inani lemigqa efayeleni lombhalo i-Java?
I-Java – Bala inombolo yemigqa efayeleni
- Vula ifayela.
- Funda umugqa ngomugqa, futhi ukhuphule isibalo + 1 umugqa ngamunye.
- Vala ifayela.
- Funda isibalo.
Ngiwenza kanjani uhlu lwamafayela ku-Linux?
Indlela elula yokubhala amafayela ngamagama ukuvele uwafake ohlwini usebenzisa umyalo we-ls. Ukufakwa ohlwini kwamafayela ngamagama (ukuhleleka kwe-alphanumeric) kungukuzenzakalelayo. Ungakhetha okuthi ls (akunamininingwane) noma ls -l (imininingwane eminingi) ukuze unqume umbono wakho.
Ingabe i-Linux iyi-Flavour ye-Unix?
Nakuba kusekelwe kusethi efanayo eyinhloko yemiyalo engu-unix, ama-flavour ahlukene angaba nemiyalo yawo ehlukile nezici, futhi aklanyelwe ukusebenza ngezinhlobo ezahlukene ze-h/w. I-Linux ivame ukubhekwa njenge-flavour ye-unix.
Ngizifaka kanjani ohlwini lwemibhalo ku-Linux?
Bona izibonelo ezilandelayo:
- Ukufaka ohlwini wonke amafayela ohlwini lwemibhalo lwamanje, thayipha okulandelayo: ls -a Lokhu kuklelisa wonke amafayela, kuhlanganisa. ichashazi (.)…
- Ukuze ubonise imininingwane enemininingwane, thayipha okulandelayo: ls -l chap1 .profile. …
- Ukuze ubonise ulwazi oluningiliziwe mayelana nohla lwemibhalo, thayipha okulandelayo: ls -d -l .