python program behind proxy

export http_proxy="http://localhost:8118"

All about pip

I was stucked in pip. Just found out that pip is called "pip-python" in RHEL.

 What's more, pip cannot auto detect system proxy settings, manual specify:

 sudo pip sudo pip-python install virtualenv --proxy localhost:8118

command sort on last column

As you know, the linux sort command is agile, which can sort on column using -k.

However, if we gonna sort on the last column and each row has different number of columns, we can still achieve that with the help of sed.

sed 's/^\(.\+\s\+\)\([0-9]\+ *\)$/\2 \1/'

Online bood recommened

A page list downloadable book:
http://cfajohnson.com/computers/pdflinks.shtml

I'm gonna go through the following:
The GNU/Linux Advanced Administration
http://www.tldp.org/LDP/Bash-Beginners-Guide/Bash-Beginners-Guide.pdf
http://www.tldp.org/LDP/abs/abs-guide.pdf
http://www.greenteapress.com/thinkpython/thinkpython.pdf