Kuv yuav tshem ob peb kab hauv Unix li cas?
Txhawm rau tshem tawm cov kab ntawm cov ntaub ntawv los ntawm nws tus kheej, siv qhov kev xaiv -i nrog sed hais kom ua. Yog tias koj tsis xav rho tawm cov kab los ntawm cov ntaub ntawv thawj qhov chaw koj tuaj yeem hloov cov zis ntawm cov lus txib sed mus rau lwm cov ntaub ntawv.
Kuv yuav tshem tawm thawj 10 kab hauv Unix li cas?
Tshem thawj N kab ntawm cov ntaub ntawv nyob rau hauv qhov chaw nyob rau hauv unix hais kom ua kab
- Ob leeg sed -i thiab gawk v4.1 -i -inplace xaiv yog qhov pib tsim cov ntaub ntawv temp qab lub scenes. IMO sed yuav tsum ceev tshaj tus Tsov tus tw thiab awk. -…
- Tail yog ntau zaus sai dua rau txoj haujlwm no, dua li sed lossis awk . (
Koj xaiv ntau kab hauv Unix li cas?
Muab koj tus cursor tso rau hauv lossis ib sab ntawm lo lus koj xav xaiv. Press Ctrl+D (Windows or Linux) or Command+D (Mac OS X) to highlight the entire word. Press Ctrl+D (Windows or Linux) or Command+D (Mac OS X) to select the next instance of the word. Repeat until you’ve selected the words you want to change.
How do you remove two lines of text when using VI?
Select your lines and type d to delete them. Move to the line you want to delete, either using the arrow keys or the j / k keys, and type dd . You can then save and exit by typing 
(los yog ZZ ). A number can also be prefixed to dd to delete multiple lines, e.g. 3dd deletes 3 lines.
Kuv yuav tshem tawm 10 kab kawg hauv Unix li cas?
Nws yog me ntsis ncig, tab sis kuv xav tias nws yooj yim ua raws.
- Suav cov kab hauv cov ntaub ntawv tseem ceeb.
- Tshem tawm cov kab uas koj xav tshem tawm ntawm cov suav.
- Luam tawm cov kab uas koj xav khaws cia thiab khaws cia rau hauv cov ntaub ntawv temp.
- Hloov cov ntaub ntawv tseem ceeb nrog cov ntaub ntawv temp.
- Tshem tawm cov ntaub ntawv temp.
Kuv yuav tshem tawm kab kawg hauv Unix li cas?
6 lus teb
- Siv sed -i '$d' hloov cov ntaub ntawv nyob rau hauv qhov chaw. -…
- Dab tsi yuav yog rau kev rho tawm cov kab kawg n, qhov twg n yog tus lej lej? -…
- @JoshuaSalazar rau kuv hauv {1..N}; ua sed -i '$d' ; ua tiav tsis txhob hnov qab hloov N – ghilesZ Oct 21 '20 at 13:23.
Kuv yuav rho tawm ntau kab hauv vi li cas?
Rho tawm ntau kab
- Nias tus yuam sij Esc mus rau hom qub.
- Muab tus cursor tso rau ntawm thawj kab uas koj xav rho tawm.
- Ntaus 5dd thiab ntaus Enter kom tshem tawm tsib kab tom ntej.
Kuv yuav tshem cov kab ntawm cov ntaub ntawv li cas?
Using a Number to Delete a Line
- Open the file in read mode.
- Read the files contents.
- Open the file in write mode.
- Use a for loop to read each line and write it to the file.
- When we reach the line we want to delete, skip it.
Kuv yuav tshem tawm thawj kab hauv Unix li cas?
siv lub sed Command
Tshem tawm thawj kab los ntawm cov ntaub ntawv tawm tswv yim siv cov lus txib sed yog qhov yooj yim heev. Cov lus txib sed hauv qhov piv txwv saum toj no tsis nyuaj rau kev nkag siab. Qhov parameter '1d' qhia rau sed hais kom siv 'd' (rho tawm) kev txiav txim ntawm kab '1'.
How do you select multiple lines?
To select more than one row in the data view, click one row, then hold the Control (Windows) or Command (Mac) key and select each of the other rows you wish to edit or remove. To select a continuous list, click one row, then hold the Shift key and click the last row.
How do you select multiple lines in vi?
Place your cursor anywhere on the first or last line of the text you want to manipulate. Press Shift+V to enter line mode. The words VISUAL LINE will appear at the bottom of the screen. Use navigation commands, such as the Arrow keys, to highlight multiple lines of text.
How do you select multiple lines in VS code?
Here is the way:
- Select the lines you want to have multiple cursors.
- Simply hit Alt + Shift – I .