fish-shell

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sudo apt-add-repository ppa:fish-shell/release-2
sudo apt-get update
sudo apt-get install fish
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> ls l*.p*
lena.png
lesson.pdf


> touch "testing_"(date +%s)".txt"
> ls *.txt
testing_1360099791.txt

> for x in (seq 5)
    touch file_$x.txt
end


> for file in *.txt
    cp $file $file.bak
end

if grep fish /etc/shells
    echo Found fish
else if grep bash /etc/shells
    echo Found bash
else
    echo Got nothing
end