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Localize provenance of current established connections
Sample command to obtain a list of geographic localization for established connections, extracted from netstat. Need geoiplookup command ( part of geoip package under CentOS)

intersection between two files

Number of connections to domains on a cPanel server

cleanup /tmp directory
Cleans all files in /tmp that have been accessed at least 2 days ago.

check open ports without netstat or lsof

Query Wikipedia via console over DNS

Find status of all symlinks
The symlinks command can show status of all symbolic links, including which links are dangling, which symlinks point to files on other file systems, which symlinks use ../ more than necessary, which symlinks are messy (e.g. having too many slashes or dots), etc. Other useful things it can do include removing all dangling links (-d) and converting absolute links to relative links (-c). The path given must be an absolute path (which is why I used $(pwd) in the example command).

live ssh network throughput test
connects to host via ssh and displays the live transfer speed, directing all transferred data to /dev/null needs pv installed Debian: 'apt-get install pv' Fedora: 'yum install pv' (may need the 'extras' repository enabled)

Print all fields in a file/output from field N to the end of the line

to see about php configure
see about php install configure


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