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  1. bash-default-variables

    Default-Variable

    Auf den beiden großartigen englischsprachigen Seiten zur Bash-Prgorammierung tldp und cyberciti kann man jede Menge Tricks zur Variablenmanipulation in bash finden.

    Ein sehr häufiger Fall ist die Default-Variable. Dabei gibt es zwei verschieden Fälle. Der mit dem Gleichheitszeichen (=), mit integrierter Zuweisung des Wertes

    echo ${varname:="default value"}
    

    Hier hat …

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  2. ls-tricks

    Tricks with ls

    List files except those with a specific extension (zsh)

    To list all files in the current directory except those with special extensions often is very useful. For example if I am in a directory with many plots or many data files and only a few others in …

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  3. sshfs

    Mount a folder remotely

    I like sshfs the secure shell filesystem. But sometimes I forget how the unmounting command is, so I write this short note to myself.

    The mounting part is intuitive:

    sshfs HOST:PATH mountpoint
    

    It mounts the given path from the given host to the given mountpoint …

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  4. X-forwarding combined with sudo

    X11 forwarding combined with sudo

    Unfornunately I have no better solution found for X-forwarding and sudoing afterwards, yet.

    This solution is insecure, but works as a dirty hack.

    user:~$ xauth list | grep unix$(echo $DISPLAY | cut -c10-12) > /tmp/xauth
    user:~$ sudo -s
    root:~# xauth add $(cat /tmp/xauth)
    root …
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