Commands by osvaldofilho (4)
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The command find search commands with size zero and erase them.
-1find . -size 0 -print0 | xargs -0 rm -
-6(crontab -e) 00 12 * * * apt-get update (/etc/init.d/cron restart)
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-12teste.txt < cut -d : -f 1,5 /etc/passwd | tr : \\t | tr a-z A-Z | cat teste.txt
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-4echo "" > .bash_history
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