Folder or Directory permission giving:
Syntax: mkdir -m 777 dirname1 dirname2 dirname3
To remove folder or directory:
Syntax: rm -r folder name
To list out all file count in the folder or directory(we must be inside that folder):
Syntax: ls -1 | wc -l
To be a root user:
Syntax: sudo -i
To enter into cron tab:
Syntax: crontab -e
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