The option -n or –number will print out the line numbers of all lines, including the blank or empty lines in the file.
E fa'afefea ona ou lolomi numera laina ile Unix?
Ina ia fa'agaoioia le faanumera o laina, seti le fu'a numera:
- Oomi le ki Esc e sui i le faiga fa'atonu.
- Oomi : (colon) ma o le a fa'agaoioi le fa'ailo i le pito i lalo agavale o le lau. Fa'aigoa seti numera po'o seti nu ma ta'i Enter . : seti numera.
- Ole numera ole laina ole a fa'aalia ile itu agavale ole lau:
How do I print a specific number of lines in Linux?
Tusi se tala bash e lolomi ai se laina patino mai se faila
- awk : $>awk '{if(NR==LINE_NUMBER) lolomi $0}' file.txt.
- sed : $>sed -n LINE_NUMBERp faila.txt.
- ulu : $>ulu -n LINE_NUMBER faila.txt | si'usi'u -n + LINE_NUMBER Lenei LINE_NUMBER o, ole numera laina e te mana'o e lolomi. Faataitaiga: Lolomi se laina mai le faila e tasi.
How do I print line numbers in shell script?
You can change PS4 to emit the LINENO (The line number in the script or shell function currently executing). In Bash, $LINENO contains the line number where the script currently executing. If you need to know the line number where the function was called, try $BASH_LINENO . Manatua o lenei fesuiaiga o se array.
E fa'afefea ona ou fa'aali numera laina ile fa'amau?
Ina ia fa'agaoioia le faanumera o laina, seti le fu'a numera:
- Oomi le ki Esc e sui i le faiga fa'atonu.
- Oomi : (colon) ma o le a fa'agaoioi le fa'ailo i le pito i lalo agavale o le lau. Fa'aigoa seti numera po'o seti nu ma ta'i Enter . : seti numera.
- Ole numera ole laina ole a fa'aalia ile itu agavale ole lau:
E fa'afefea ona 10 laina o pusi?
Ina ia tilotilo i nai laina mulimuli o se faila, fa'aaoga le poloaiga si'usi'u. si'usi'u e galue i le auala lava e tasi e pei o le ulu: fa'aigoa si'usi'u ma le igoa faila e va'ai ai laina mulimuli e 10 o lena faila, po'o le fa'ailoga tail -numera igoa faila e va'ai ai laina numera mulimuli o le faila.
E faʻafefea ona ou faʻaalia laina muamua 10 o se faila i Linux?
Fa'aigoa le fa'atonuga ulu e fa'aalia ai laina muamua e 10 o se faila e ta'ua "bar.txt":
- ulu -10 bar.txt.
- ulu -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 ma lolomi' /etc/passwd.
- perl -ne'1..20 ma lolomi' /etc/passwd.
How do you show line numbers in Unix?
Faasolo le Esc ki if you are currently in insert or append mode. Press : (the colon). The cursor should reappear at the lower left corner of the screen next to a : prompt. A column of sequential line numbers will then appear at the left side of the screen.
E faʻafefea ona ou faʻaalia numera laina i Linux?
E mafai ona e fesuia'i le fa'aaliga numera o le laina mai le pa o le lisi alu i le Va'ai -> Fa'aali Numera Laina. O le filifilia o lena filifiliga o le a fa'aalia ai numera o laina i le itu agavale pito o le faamalama o le faatonu. E mafai ona e fa'agataina e ala i le tapeina o le filifiliga tutusa. E mafai fo'i ona e fa'aoga le ala pupu'u F11 e sui ai le fa'atulagaga.
O le a le fa'atonuga e fa'aoga e fa'aigoaina ma fa'aopoopo numera laina e faila ai mea?
le poloaiga nl fa'aopoopo numera laina i le igoa faila na pasi atu i ai. 2. Faʻaaogaina o le "pusi".
E fa'afefea ona ou lolomi numera laina ile grep?
le -n ( poʻo -line-number ) filifiliga e taʻu atu i le grep e faʻaali le numera laina o laina o loʻo i ai se manoa e fetaui ma se mamanu. A fa'aoga lea filifiliga, e lolomi e le grep le fa'atusa i galuega fa'ata'atitia fa'atasi ma le numera laina. O le fa'aaliga o lo'o i lalo o lo'o fa'aalia mai ai o lo'o maua fa'atusa i laina 10423 ma le 10424.
E faʻafefea ona ou lolomi le laina mulimuli o se faila i Linux?
Linux siʻuʻu fa'atonu le syntax
Si'usi'u o se poloaiga e lolomi ai nai numera mulimuli o laina (10 laina e le mafai) o se faila patino, ona faʻamutaina lea. Fa'ata'ita'iga 1: I le lē mafai ona lolomi e le "si'u" laina mulimuli e 10 o se faila, ona alu loa lea. e pei ona e vaʻai, o loʻo lolomi ai laina mulimuli e 10 o /var/log/messages.
E faʻafefea ona ou faʻatautaia se atigi tusitusiga i Linux?
E faapefea ona ou tamoe . sh faila shell script i Linux?
- Tatala le talosaga Terminal i Linux poʻo Unix.
- Fausia se faila faila fou i le .sh faʻaopoopoga e faʻaaoga ai se tusitala o tusitusiga.
- Tusi le faila faila e faʻaaoga ai le nano script-name-here.sh.
- Seti le faʻatagaina o le faʻatagaina i luga o lau tusitusiga e faʻaaoga ai le chmod command : chmod +x script-name-here.sh.
- Ina ia fa'agasolo lau tusitusiga:
E fa'afefea ona ou maua ni fa'amatalaga ile bash?
Ina ia faitau le faʻaoga a le tagata Bash, matou te faʻaaogaina le fa'atonuga Bash ua ta'ua o le faitau.
...
Polokalama:
- #!/bin/bash.
- # Faitau le faʻaoga a le tagata faʻaoga.
- echo "Tuu i totonu le igoa faʻaoga:"
- faitau muamua_igoa.
- si'uleo "O le Igoa o lo'o iai nei o le $first_name"
- siuleo
- echo “Tuu i isi igoa o tagata faaaoga: “
- faitau le igoa1 igoa2 igoa3.