how to check folder/directory capacity in linux

NAME
du – estimate file space usage
SYNOPSIS
du [OPTION]… [FILE]…
DESCRIPTION

Summarize disk usage of each FILE, recursively for directories.

Mandatory arguments to long options are mandatory for short options too.

-a, –all
write counts for all files, not just directories
-B, –block-size=SIZE use SIZE-byte blocks
-b, –bytes
print size in bytes
-c, –total
produce a grand total
-D, –dereference-args
dereference FILEs that are symbolic links
-h, –human-readable
print sizes in human readable format (e.g., 1K 234M 2G)
-H, –si
likewise, but use powers of 1000 not 1024
-k
like –block-size=1K
-l, –count-links
count sizes many times if hard linked
-L, –dereference
dereference all symbolic links
-S, –separate-dirs
do not include size of subdirectories
-s, –summarize
display only a total for each argument
-x, –one-file-system
skip directories on different filesystems
-X FILE, –exclude-from=FILE
Exclude files that match any pattern in FILE.
–exclude=PATTERN Exclude files that match PATTERN.
–max-depth=N

EXAMPLE

du -s -h /home/user

du -h /home/user

du /home/user

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