[UNIX] cat equivalent
cat1()
{
dd if=$1 2>/dev/null
}
cat2()
{
sed -e 's/ / /' $1
}
cat3()
{
awk '{print}' $1
}
cat4()
{
tr -s 1 1 < $1
}
cat5()
{
paste $1 /dev/null
}
cat6()
{
diff $1 /dev/null | sed -e 's/^< //' | awk 'NR>1 {print}'
}
cat7()
{
gzip - < $1 | gunzip -
}
cat8()
{
bzip2 - < $1 | bunzip2 -
}
cat9()
{
perl -lane 'print' $1
}
cat10()
{
grep '' $1
}
cat11()
{
cp $1 /dev/tty
}
cat12()
{
unix2dos < $1 | dos2unix
}


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