Linux Big Summary

---restore content starts---

1. Redirect: Copy the contents of one file to another file

' > '--On behalf of redirection

Eg: write the contents of file A into the B file

Cat A.txt > B.txt

echo 111 > B.txt---REDIRECT 111 to b.txt---will overwrite the contents of the source file

EG2: Use redirection to empty a file (that is, redirect empty content to this file) without deleting the file:

> B.txt---empty b.txt

2. ' >> '--representative append

echo 222 >> b.txt---Append 222 to the B.txt file at the end of the file

3. simultaneous execution of 2 commands ' && '

Eg:cat a.txt > B.txt && >a.txt----copy content to B and empty a

4, Sz a.txt--Download the file to the local

---restore content ends---

Linux Big Summary