Commands by Walter88 (0)

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Open screen on the previous command
I often find myself wanting to open screen on whatever command I'm currently running. Unfortunately, opening a fresh screen session spawns a new bash session, which doesn't keep my history, so calling screen directly with the previous command is the only way to go.

pdfcount: get number of pages in a PDF file

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Dumping Audio stream from flv (using mplayer)

a function to find the fastest DNS server
http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

Open (in vim) all modified files in a git repository
The option --porcelain makes the output of git easier to parse. This one-liner may not work if there is a space in the modified file name.

Find default gateway

shuffle lines via perl
Same, without modules... Probably smarter option: just use the shuf command or even sort -R.

get rid of lines with non ascii characters
found here: https://stackoverflow.com/a/9035939

Congratulations on new year
Requires installed command line PHP. Also, try at different dimensions of terminal window

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