Commands tagged no-ip (1)

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Get decimal ascii code from character
the shortest command for character 'a' i know

Search through all installed packages names (on RPM systems)
You can use wildcard with rpm search but you have to do 2 things: 1. use "-a" switch (means "all") with query ("-q") switch - argument is a pattern to use while searching for package names of all installed packages 2. protect wildcards, so that shell could not eat them - escape it with backslash ("\") or enclose all pattern between apostrophes ("'"): $ rpm -qa 'co*de' As you can see above it is possible to insert wildcards into middle of the pattern. If you want, you can add "-i" or another rpm query options, "-i" will print package information for all installed packages matching pattern.

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"

Check if *hardware* is 32bit or 64bit
This command tell you if your hardware is 32 or 64 bits even if you install a 32bits OS on a 64 bits hardware. If your distro don't support the -q switch, try doing : $ grep &>/dev/null '\' /proc/cpuinfo && echo 64 bits || echo 32 bits

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"

Insert a comment on command line for reminder
Comments can be used directly on the command line so I can save in the history a brief description of what command does.

find all active IP addresses in a network
There are several other options. This one is plain and simple. Another option is: nmap -sP 192.168.0.0/24

live netcat network throughput test
On the another machine write this command. pv -r /dev/zero | nc 192.168.1.1 7777 It will show live throughput between two machine.The destination machine ip is at our example 192.168.1.1 You must multiply by 8 for the network calculation. You must install pv and netcat commands for this commands usage. [email protected] http://www.bayner.com/

grep for minus (-) sign
Use flag "--" to stop switch parsing

Keep track of diff progress
When running a long `diff -r` over folders, this simulates a "verbose" mode where you can see where diff is in the tree. Replace $file with the first part of the path being compared.


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