Commands using find (1,252)

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Create a mirror of a local folder, on a remote server
Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

count how many times a string appears in a (source code) tree
grep -o puts each occurrence in a separate line

Delete backward from cursor, useful when you enter the wrong password

Count items in JSON array
Pipe any JSON to jq, then count with the appropiate expression and use the | length on the array

Show which process is blocking umount (Device or resource is busy)
Instead of using force un-mounting, it's better to find the processes that currently use the relevant folder. Taken from: http://www.linuxhowtos.org/Tips%20and%20Tricks/findprocesses.htm

What is my ip?

Ensure that each machine that you log in to has its own history file
On systems where your home directory is shared across different machines, your bash history will be global, rather than being a separate history per machine. This setting in your .bashrc file will ensure that each machine has its own history file.

Sed can refference parts of the pattern in the replacement:

Dump a web page
Useful to browse dangerous web sites.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

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