Lesson 5: Managing Files
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Objectives covered
o 103.3 Performing basic file management (weight: 4)
o 104.5 Manage file permissions and ownership (weight: 3)
o 104.6 Create and change hard and symbolic links (weight: 2)
o 104.7 Find system files and place files in correct location (w:2)
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Performing basic
file management
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File naming rules
- Case sensitive
- Limit to 255 characters
- No need to use dot “.”
- Character used as bellow conventions:
Could use
Do not use
characters A-Z, a-z
Meta characters: \ / < > ! $ % ^ & * | { } [ ] “ ‘ ` ; ~
numbers 0-9
Space “ “
dot “.”
dash “–”
underscore “_”
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Creating empty files
touch filename
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Displaying files
ls [Options] [File]
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Displaying files using wildcards
* ? []
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Specify file type
file, type, ls -F
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Making directories
mkdir [Option] path-to-dir
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Copying files and directories
cp [Option] Source Dest
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Moving files and directories
mv [Option] Source Dest
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deleting files and directories
rm [Option] File
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Compressing/decompressing files
Compress
command
Uncompress
command
Notation
gzip
gunzip
Just compress one file at a time, replace the
original file with the compressed file with a .gz
file extension
bzip2
bunzip2
Just compress one file at a time, replace the
original file with the compressed file with a
.bz2 file extension
xz
unxz
Just compress one file at a time, replace the
original file with the compressed file with a .xz
file extension
zip
unzip
Can compress multiple file at a time, does not
replace the original file(s), create a new file
with .zip file extention
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Viewing content of compressed file
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Archiving files
cpio
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Archiving files
tar
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Extracting tarball
tar
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Archiving files
dd if=InputDev of=outputDev [Operands]
LEVEL values:
- none
only display error messages
- noxfer
does not display final transfer statistics.
- progress displays periodic transfer statistics
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Question...!
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