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  1. How can I check the first character in a string in Bash or Unix shell

    How can I check the first character in a string in Bash or Unix shell

  2. 327_can you "run two bash commands at the same time"?

    327_can you "run two bash commands at the same time"?

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  3. 330_how to "change your computers password" with bash using the "passwd" command

    330_how to "change your computers password" with bash using the "passwd" command

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  4. 331_how to "copy and paste a file and a folder recursively" with the "cp and dash r" command

    331_how to "copy and paste a file and a folder recursively" with the "cp and dash r" command

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  5. 329_how to "kill a frozen program" with the pidof and kill commands

    329_how to "kill a frozen program" with the pidof and kill commands

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  6. 325_how to flash an iso using the dd command

    325_how to flash an iso using the dd command

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  7. 326_can you "open two terminal windows at the same time"?

    326_can you "open two terminal windows at the same time"?

  8. 328_how to "see how much space you have left on your computer" with df -h

    328_how to "see how much space you have left on your computer" with df -h