Txhawm rau ua qhov no, nias Esc, ntaus tus lej kab, thiab tom qab ntawd nias Shift-g . Yog tias koj nias Esc thiab tom qab ntawd Shift-g yam tsis qhia tus lej kab, nws yuav coj koj mus rau kab kawg hauv cov ntaub ntawv.
Kuv yuav mus rau ib kab ntawm cov ntaub ntawv hauv Linux li cas?
The need to get/print a particular line of a file on the Linux shell is a common task. Luckily there are various ways to do this.
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3 txoj hauv kev kom tau txais Nth Kab ntawm Cov Ntaub Ntawv hauv Linux
- taub hau/tail. Tsuas yog siv kev sib xyaw ntawm lub taub hau thiab tus Tsov tus tw lus txib yog qhov yooj yim tshaj plaws. …
- sed. …
- awk.
How do you go to a specific line in less?
To go to the end, press uppercase G. To go to a specific line, enter a number before pressing the g or G keys.
How do I view a file line?
Cov cuab yeej wc yog "lo lus txee" hauv UNIX thiab UNIX-zoo li kev khiav haujlwm, tab sis koj tuaj yeem siv nws los suav cov kab hauv cov ntaub ntawv los ntawm ntxiv qhov kev xaiv -l. wc -l foo yuav suav cov kab hauv foo .
Kuv yuav ua li cas qhia thawj kab ntawm cov ntaub ntawv hauv Linux?
Ntaus lub taub hau hauv qab no kom pom thawj 10 kab ntawm cov ntaub ntawv hu ua "bar.txt":
- taub hau -10 bar.txt.
- taub hau -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 and print' /etc/passwd.
- perl -ne'1..20 and print' /etc/passwd.
Yuav ua li cas kuv grep ib kab los ntawm ib cov ntaub ntawv?
Cov lus txib grep tshawb nrhiav los ntawm cov ntaub ntawv, nrhiav kev sib tw rau cov qauv teev tseg. Txhawm rau siv nws ntaus grep, ces tus qauv peb tab tom nrhiav thiab thaum kawg lub npe ntawm cov ntaub ntawv (los yog cov ntaub ntawv) peb tab tom nrhiav hauv. Cov zis yog peb kab hauv cov ntaub ntawv uas muaj cov ntawv 'tsis'.
What is the command for the display of a file list?
Saib cov piv txwv hauv qab no:
- Txhawm rau sau tag nrho cov ntaub ntawv hauv cov npe tam sim no, ntaus cov hauv qab no: ls -a Qhov no teev tag nrho cov ntaub ntawv, suav nrog. dot (.) …
- Txhawm rau tso saib cov ncauj lus kom ntxaws, ntaus cov hauv qab no: ls -l chap1 .profile. …
- Txhawm rau tso cov ncauj lus kom ntxaws txog cov npe, ntaus cov hauv qab no: ls -d -l .
Cov lus txib twg yuav tshem tawm tag nrho cov kab dawb huv hauv cov ntawv qub?
8. Which command will delete all the blank lines in file old. txt? Explanation: tsis muaj leej twg.
Kuv yuav grep cov ntaub ntawv hauv Linux li cas?
Yuav ua li cas siv grep hais kom ua hauv Linux
- Grep hais kom ua Syntax: grep [xaiv] Qauv [FILE…] …
- Piv txwv ntawm kev siv 'grep'
- grep foo /file/name. …
- grep -i "foo" /file/name. …
- grep ' yuam kev 123' /file/name. …
- grep -r “192.168.1.5” /etc/ …
- grep -w "foo" /file/name. …
- egrep -w 'word1|word2' /file/name.
Kuv yuav suav cov kab hauv cov ntaub ntawv li cas?
Yuav suav cov kab hauv cov ntaub ntawv li cas hauv UNIX/Linux
- Cov lus txib "wc -l" thaum khiav ntawm cov ntaub ntawv no, tso tawm cov kab suav nrog rau lub npe file. $ wc -l file01.txt 5 file01.txt.
- Txhawm rau tshem tawm cov npe ntawm qhov tshwm sim, siv: $ wc -l < file01.txt 5.
- Koj tuaj yeem muab cov lus txib tso tawm rau wc hais kom ua siv yeeb nkab. Piv txwv li:
Cov lus txib twg yog siv los txheeb xyuas cov ntaub ntawv?
Cov lus txib 'file' yog siv los txheeb xyuas hom ntaub ntawv. Cov lus txib no sim txhua qhov kev sib cav thiab faib nws. Lub syntax yog 'file [xaiv] File_name'.
Kuv yuav ua li cas qhia thawj 10 kab ntawm cov ntaub ntawv hauv Linux?
Txhawm rau saib thawj ob peb kab ntawm cov ntaub ntawv, ntaus head filename, qhov twg filename yog lub npe ntawm cov ntaub ntawv koj xav saib, thiab ces nias . Los ntawm lub neej ntawd, lub taub hau qhia koj thawj 10 kab ntawm cov ntaub ntawv. Koj tuaj yeem hloov qhov no los ntawm kev ntaus lub taub hau -number filename, qhov twg tus lej yog tus lej ntawm kab koj xav pom.
Dab tsi yog cov lus txib kom tso saib thawj 10 kab ntawm cov ntaub ntawv hauv Linux?
Lub taub hau hais kom ua, raws li lub npe implies, luam tawm sab saum toj N tus naj npawb ntawm cov ntaub ntawv ntawm qhov muab nkag. Los ntawm lub neej ntawd, nws luam thawj 10 kab ntawm cov ntaub ntawv teev tseg. Yog tias muaj ntau tshaj ib lub npe cov ntaub ntawv, cov ntaub ntawv los ntawm txhua cov ntaub ntawv yog ua ntej los ntawm nws cov ntaub ntawv npe.
Kuv yuav nyeem thawj kab ntawm cov ntaub ntawv li cas?
Siv cov ntaub ntawv. readline() nyeem ib kab ntawm ib cov ntaub ntawv
Qhib cov ntaub ntawv hauv hom nyeem nrog cov syntax nrog qhib (filename, hom) raws li cov ntaub ntawv: nrog hom li "r". Hu ua ntaub ntawv. nyeem ntawv ( ) kom tau thawj kab ntawm cov ntaub ntawv thiab khaws qhov no hauv qhov sib txawv first_line .