sudo lsof -i TCP:8181 | grep LISTEN
java 1400 m...y 216u IPv6 0x...e5 0t0 TCP *:8181 (LISTEN)

grep -roh aaa . | wc -w
Grep recursively all files and directories in the current dir searching for aaa, and output only the matches, not the entire line. Then, just use wc to count how many words are there.
took from s.o. http://stackoverflow.com/a/6135712

/bin/mv: Argument list too long

find /path/to/file -type f | xargs -i mv "{}" /path/to/move find . -type f | xargs -i mv "{}" ./archive/

From Blue Tree Hotel to Z Cafe

Basics

adicionar soja por favor
(aj ish in ar) (so sha)
ar
Add soy please


um café
(oom)

One coffee


Açúcares
(a soo car ees)

Sugar


para baixo
(bi sho)

Down


para cima
(seema)

Up


desculpe

Sorry/Excuse me

command to generate sha1 digest of file

openssl dgst -sha1 somefile.zip
awk only the digest:
openssl dgst -sha1 node-v0.8.11-linux-x64.tar.gz | awk -F'= ' '{print $2}'

perm gen error with a mvn clean whatever

export MAVEN_OPTS="-Xms1536m -Xmx1536m -XX:PermSize=1024m -XX:MaxPermSize=2048m"