How to check the line number to line number of a file in Linux

linux How to display certain lines of a file (the middle lines)

[1] Starting from line 3000, display 1000 lines. That is, display lines 3000~3999

cat filename | tail -n +3000 | head -n 1000

[2] Display lines 1000 to 3000

cat filename| head -n 3000 | tail -n +1000

(recommended tutorial: linux tutorial)

Pay attention to the order of the two methods.

Decomposition:

tail -n 1000: display the last 1000 lines

tail -n 1000: start displaying from line 1000, and display the following

head -n 1000: Display the first 1000 lines

[3] Use the sed command

sed -n ‘5,10p’ filename

so that you can only view the 5th to 10th lines of the file.

[Four] Use grep command

grep -C 5 foo filename Display the line matching the foo string in the file file and the 5 lines above and below

grep -B 5 foo filename displays foo and the first 5 lines

grep -A 5 foo filename displays foo and the last 5 lines

Recommended related video tutorials: linux video tutorial

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