Red Hat NETSCAPE MANAGEMENT SYSTEM 6.0 - COMMAND-LINE Manuale Utente Scaricare il pdf (Pagina 4)

Directory Size

How to find - Size of a directory & Free disk space

This article explains 2 simple commands that most people want to know

when they start using Linux. They are finding the size of a directory and

finding the amount of free disk space that exists on your machine. The

command you would use to find the directory size is ' du '. And to find

the free disk space you could use ' df '.

All the information present in this article is available in the man pages

for du and df. In case you get bored reading the man pages and you

want to get your work done quickly, then this article is for you.

'du' - Finding the size of a directory

$ du

Typing the above at the prompt gives you a list of directories that exist

in the current directory along with their sizes. The last line of the output

gives you the total size of the current directory including its

subdirectories. The size given includes the sizes of the files and the

directories that exist in the current directory as well as all of its

subdirectories. Note that by default the sizes given are in kilobytes.

$ du /home/david

The above command would give you the directory size of the directory

/home/david

$ du -h

This command gives you a better output than the default one. The

option '-h' stands for human readable format. So the sizes of the files /

directories are this time suffixed with a 'k' if its kilobytes and 'M' if its

Megabytes and 'G' if its Gigabytes.

$ du -ah

This command would display in its output, not only the directories but

also all the files that are present in the current directory. Note that 'du'

always counts all files and directories while giving the final size in the

last line. But the '-a' displays the filenames along with the directory

names in the output. '-h' is once again human readable format.

$ du -c

This gives you a grand total as the last line of the output. So if your

directory occupies 30MB the last 2 lines of the output would be

30M .

30M total

1 2 3 4 5 6 7 8 9 ... 59 60

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Red Hat NETSCAPE MANAGEMENT SYSTEM 6.0 - COMMAND-LINE Manuale Utente Pagina 4