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Get the IP of the host your coming from when logged in remotely
Even faster without the need for cut... :)

Burst a Single PDF Document into Single Pages and Report its Data to doc_data.txt
Require the pdftk package It ll split each page in your pdf file , into a new pdf file and report info on doc_data.txt

Clear your history saved into .bash_history file!
clears the history

Use the builtin ':' bash command to increment variables
I just found another use for the builtin ':' bash command. It increments counters for me in a loop if a certain condition is met... : [arguments] No effect; the command does nothing beyond expanding arguments and performing any specified redirections. A zero exit code is returned.

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)

extract column from csv file
extracts the 5th column using the delimiter ','

Rsync using SSH and outputing results to a text file
--delete will delete copies on remote to match local if deleted on local --stats will output the results -z zip -a archive -A preserve ACL -x don't cross filesystem boundaries -h human readable -e specify the remote shell to use

ping a range of IP addresses
nmap accepts a wide variety of addressing notation, multiple targets/ranges, etc.

Query Wikipedia via console over DNS

Execute a command before display the bash prompt
For example, if you are the type who type ls very often, then $ PROMPT_COMMAND=ls will ls after every command you issue.


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