Commands by twobitsprite (1)

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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"

Determine next available UID
Typical usage would be in a script that would want the next open UID in a range (in this case 500-600)

Random numbers with Ruby
There's been a few times I've needed to create random numbers. Although I've done so in PERL, I've found Ruby is actually faster. This script generates 20 random "10" digit number NOT A RANDOM NUMBER. Replace 20 (1..20) with the amount of random numbers you need generated

vi show line numbers
you don't have to spell out numbers, you can just use nu

Find removed files still in use via /proc
Oracle DBA remove some logfiles which are still open by the database and he is complaining the space has not been reclaimed? Use the above command to find out what PID needs to be stopped. Or alternatively recover the file via: $ cp /proc/pid/fd/filehandle /new/file.txt

resolving basic authentication problem(401) with wget
I have a server with a php requiring basic authentication, like this:

colorize comm output
It just colorizes the line based on if it has 0, 1 or 2 tabs at the beginning of the line. Won't work so well if lines already begin with tabs (too bad comm doesn't have an option to substitute \t for something else). Don't forget comm needs input files to be sorted. You can use a shortcut like this with bash: comm

Get listening ports on a localhost
ss is a tool that will help you to get all kinds of useful information about the current sockets on a localhost. You can also get the uid of the daemons process using the flag: $ ss -le

Download Englishword pronounciation as mp3 file

Count the number of man pages per first character (a-z)
There once was a day I needed this info.


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