Linux using notes 6

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1. Append content

Append the contents of one file to another file:

Cat First.txt >> second.txt//append to the end of the Second.txt file

Cat first.txt > second.txt//overwrite content in Second.txt file

2. View head, tail, etc.

View Header:

Head-n the number of rows to display after My.txt//-n

View Tail:

Tail-n the number of rows to display after My.txt//-n

To view a specific number of lines:

Starting at line No. 3000, displays 1000 rows. The 3000~3999 line is displayed

Cat FileName | Tail-n +3000 | Head-n 1000

Display 1000 rows to 3000 rows

Cat filename| Head-n 3000 | Tail-n +1000

Command with SED

Sed-n ' 5,10p ' filename so you can only view lines 5th through 10th of the file.

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Linux using notes 6