How to implement file overwriting operation in Linux

Linux how to achieve file overwrite operation, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something.

First, use the unalias cp command to remove the alias for cp (only this terminal connection session is temporarily cancelled). Let's enter the alias command to view the aliases that have been set within the system.

The code is as follows:

[root@localhost ~] # alias

Alias cp='cp-i'

Alias l.='ls-d. *-color=tty'

Alias ll='ls-l-color=tty'

Alias ls='ls-color=tty'

Alias mv='mv-i'

Alias rm='rm-i'

Alias which='alias | / usr/bin/which-tty-only-read-alias-show-dot-show-tilde'

Enter the unalias cp command to cancel the alias of the cp command

The code is as follows:

[root@localhost ~] # unalias cp

[root@localhost ~] # cp filename new/filename

[root@localhost ~] #

After using the unalias cp command, you can use cp filename new/filename without prompting for yes or no. Isn't that convenient?

Enter the\ cp command directly, which also cancels the alias of cp.

The code is as follows:

[root@localhost ~] #\ cp filename new/filename

[root@localhost ~] #

Is it easier than the previous method?

3. Input yes automatically by using the pipe

The code is as follows:

[root@localhost ~] # yes | cp filename new/filename

Cp: overwrite `new/filename'? [root@localhost ~] #

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