dlsym

example of using dlsym()

C

lemon

example of using the Lemon parser generator

C

udp

example of UDP client and server

C

tcp

example of TCP client and server

C

ifinfo

code to list network interfaces, their IPv4/v6 addresses and MACs

C

dns

example of doing DNS lookup

C

sigio

example of signal driven I/O notification

C

asm

a few x86 assembly programs that call C library functions or are called from C

asm

inotify

example of getting inotify file events (Linux 2.6.13 and higher)

C

mworkers

example of a parent process managing multiple worker processes

C

pcre

example of using pcre library

C

pcap

example of using libpcap to capture packets

C

readline

example of using readline library

C

unixdomain

example of UNIX domain socket client and server notes

C

controlport

a control port library: an administrative interface to a server

C

bloom

builds a Bloom filter from lines of one text file, tests lines of another file on it

C

timeseries

a time series library, series comprised of arbitrary elements

C

entropy

measuring entropy of a byte stream notes

C

zlib

example of implementing a simple gzip/gunzip using the zlib C API

C

tconf

simple function to read key-value configuration file entries

C

rw_wrap

macros to wrap read/write, which loop until "len" bytes are read or written

C

iconv

example of using the iconv library

C

iscan

an incremental grep that reads a stream piecemeal scanning for a pattern

C

slurp

example of using read or mmap to "slurp" a whole file

C

pexit

a C program that gets signalled when its parent exits using prctl

C

utf8

macros for utf8 handling including character length, validity and utf32 conversion

C

looper

example of iterating over lines of input from file or stdin using readline

C

fifor

run commands whenever a fifo is readable (useful when triggered by a vim hotkey) notes

Perl

downsample

reduce a text file to x% of its lines (default 10%)

Perl

md5watch

list files changed since last run notes

Perl

mailpl

send email with attachments, configurable from address, etc

Perl

anb

list lines in file A but not in file B

Perl

bin2hex

convert stdin to hex bytes

Perl

hex2bin

convert hex args to binary bytes on stdout

Perl

fcut

print region (from position s of length l) from a file

Perl

pagehits

parse access.log and store daily hits for each url, or view cumulative hits

Perl

remember

type "remember", run some commands you want to remember, then "remember -s" to save them notes

sh

rrd

sample of using rrdtool

Perl

ditaa

embedding ditaa diagrams into Asciidoc documents notes

ditaa

setup

configure some of my preferences in .bash_profile, .gdbinit, .vimrc and .inputrc

sh