Recent content by frankliuao

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    What is the purpose of the awk command in relation to file.txt?

    awk '{$1=$1}1' file.txt This command can delete leading spaces of file.txt. But why? Anyone can tell me what $1=$1 does and the single 1 does? THanks,
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    Learn Mathematica - Discuss on Forum

    I'm currently learning Mathematica. Are there any forums that you guys usually surf?