Impendulo Esheshayo: Ngiyiphrinta kanjani ikholomu ye-nth ku-Unix?

Uwuphrinta kanjani umugqa we-nth ku-Unix?

5 Sed IKHELI Lefomethi Izibonelo

1. Lokhu kuzofana nomugqa we-Nth kuphela kokokufaka. …
2. I-M~N enomyalo othi “p” iphrinta wonke umugqa we-Nth kusukela kulayini M. …
3. I-M,N enomyalelo othi “p” iphrinta umugqa ongu-Mth ukuya kumugqa ongu-Nth. …
4. I-$ onomyalo othi "p" ifanelana nomugqa wokugcina kuphela kokokufakayo. …
5. N,$ enomyalo wokuphrinta “p” ukusuka kumugqa ongu-Nth kuya ekugcineni kwefayela.

14 isiqephu. 2009 g.

Ngiphrinta kanjani ikholomu yokugcina yefayela ku-Unix?

Sebenzisa i-awk ngesihlukanisi senkambu -F isethwe esikhaleni ” “. Sebenzisa iphethini $1==”A1” kanye nesenzo {print $NF} , lokhu kuzophrinta inkambu yokugcina kuwo wonke amarekhodi lapho inkambu yokuqala ithi “A1”.

How do I print all columns in awk?

Using awk to print all columns from the nth to the last

1. As an aside, the grep | awk is an antipattern — you want awk ‘/!/ { print $2 }’ – tripleee Sep 18 ’15 at 9:34.
2. Unix “cut” is easier… …
3. Possible duplicate of print rest of the fields in awk – acm Mar 15 ’17 at 8:25.
4. @tripleee: I’m so happy that you mentioned this – I’m frustrated at seeing it everywhere! –

UJan 25. 2012

Uwuthola kanjani umugqa we-nth ku-Linux?

Ngezansi kunezindlela ezintathu ezinhle zokuthola umugqa we-nth wefayela ku-Linux.

1. ikhanda / umsila. Ukusebenzisa nje inhlanganisela yemiyalo yekhanda nomsila cishe kuyindlela elula kakhulu. …
2. sed. Kunezindlela ezimbalwa ezinhle zokwenza lokhu nge-sed. …
3. awu. I-awk ine-NR eyakhelwe ngaphakathi egcina umkhondo wezinombolo zemigqa yefayela/yokusakaza.

Imuphi umyalo ozophrinta yonke imigqa efayelini?

I-grep iphatha i-EOF njenge-delimiter yomugqa, ngakho-ke i-grep '^. *$' ifayela lizophrinta umugqa wokugcina ngisho noma ungekho umugqa omusha ekugcineni kwefayela.

Ngiwuphrinta kanjani umugqa othile ku-Linux?

Print a single specific line

The “head -x” part of the command will get the first x lines of the files. It will then redirect this output to the tail command. The tail command will display all the lines starting from line number x.

Ngiphrinta kanjani ikholomu ku-Linux?

Ukuphrinta igama le-nth noma ikholomu efayeleni noma emugqeni

1. Ukuze uphrinte ikholomu yesihlanu, sebenzisa umyalo olandelayo: $ awk '{ phrinta $5 }' igama lefayela.
2. Futhi singaphrinta amakholomu amaningi futhi sifake umucu wethu wangokwezifiso phakathi kwamakholomu. Isibonelo, ukuze uphrinte imvume negama lefayela lefayela ngalinye kuhla lwemibhalo lwamanje, sebenzisa isethi yemiyalo elandelayo:

Ngisiphrinta kanjani isikhala se-AWK?

Ukuze ubeke isikhala phakathi kwezimpikiswano, vele wengeze okuthi ” , isb awk {'print $5″ “$1'} .

Kuyini ukuphrinta i-NF awk?

I-NF iwukuguquguquka okuchazwe ngaphambilini inani lalo eliyinombolo yezinkambu kurekhodi lamanje. i-awk ibuyekeza ngokuzenzakalelayo inani le-NF isikhathi ngasinye lapho ifunda irekhodi. Kungakhathaliseki ukuthi zingaki izinkambu ezikhona, inkambu yokugcina kurekhodi ingamelwa ngu-$NF . Ngakho-ke, i-$NF iyafana ne-$7, okuyisibonelo '. ‘.

Iyini i-NR kumyalo we-awk?

I-NR ingukuguquguquka okwakhelwe ngaphakathi kwe-AWK futhi isho inani lamarekhodi acutshungulwayo. Ukusetshenziswa : I-NR ingasetshenziswa kubhulokhi yesenzo imele inombolo yomugqa ocutshungulwayo futhi uma isetshenziswa kokuthi END ingaphrinta inombolo yemigqa ecutshungulwe ngokuphelele. Isibonelo : Ukusebenzisa i-NR ukuphrinta inombolo yomugqa kufayela usebenzisa i-AWK.

Ngiphrinta kanjani ku-awk?

Ukuze uphrinte umugqa ongenalutho, sebenzisa ukuphrinta "" , lapho "" kuwuchungechunge olungenalutho. Ukuze uphrinte ucezu olugxilile lombhalo, sebenzisa iyunithi yezinhlamvu engaguquki, njengokuthi “Ungathuki” , njengento eyodwa. Uma ukhohlwa ukusebenzisa izinhlamvu zokucaphuna kabili, umbhalo wakho uthathwa njengesisho esingesihle, futhi cishe uzothola iphutha.

Ngiyiphrinta kanjani imigqa ku-awk?

Ukusebenzisa i-AWK ukuze Uhlunge Imigqa

1. awk “{print NF}” < pos_cut.txt | ubunye.
2. awk '{print $1 $2}' pos_cut.txt.
3. awk '/2410626/' pos_cut.txt.
4. awk '{ if($8 >= 11000000) {phrinta }}' pos_cut.txt | ikhanda.
5. awk -F “t” '{ if(($7 == 6) && ($8 >= 11000000)) {phrinta } }' pos_cut.txt | umsila.

9 авг. 2016 g.

Ngiwubonisa kanjani umugqa wefayela ku-Unix?

Izihloko ezihlobene Nalesi

1. awk : $>awk '{if(NR==LINE_NUMBER) phrinta $0}' file.txt.
2. sed : $>sed -n LINE_NUMBERp file.txt.
3. 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.

26 isiqephu. 2017 g.

Ngiyithola kanjani inombolo yomugqa ku-Unix?

Ukwenza lokhu, cindezela u-Esc , thayipha inombolo yomugqa, bese ucindezela u-Shift-g . Uma ucindezela u-Esc bese u-Shift-g ngaphandle kokucacisa inombolo yomugqa, kuzokuyisa kulayini wokugcina efayelini.

How do I show the 10th line of a file in Linux?

Thayipha umyalo wekhanda olandelayo ukuze ubonise imigqa yokuqala eyi-10 yefayela elibizwa ngokuthi “bar.txt”:

1. ikhanda -10 bar.txt.
2. ikhanda -20 bar.txt.
3. sed -n 1,10p /etc/group.
4. sed -n 1,20p /etc/group.
5. awk 'FNR <= 10' /etc/passwd.
6. awk 'FNR <= 20' /etc/passwd.
7. perl -ne'1..10 bese uphrinta' /etc/passwd.
8. perl -ne'1..20 bese uphrinta' /etc/passwd.

18 unyaka. 2018 г.