Linux Command Learning Series 13-gzip,tar command

Previous section review:

1. Locate command

2. Whereis,which command

Job: Create a file myfile.txt, find it with locate, and find the CD command with which and Whereis, respectively

Touch MyFile.txt

Locate MyFile.txt

UpdateDB

Locate MyFile.txt

Whereis CD

which CD

1. gzip/gunzip

Gzip is used to compress files in place, it is simple to use, for example, we want to compress the messages file under/var/log, can be used directly with GZIP messages

You can find that the messages file does not exist, one more messages.gz file

At the same time we use Gzip messages.gz–l to view the zip file details

We can see that the compression ratio is 87.3% or quite impressive.

To unzip a newly compressed file, you can use Gunzip

Gzip can only be used to compress files, cannot compress directories, can use GZIP–H to see more parameter description

2. tar

The tar command can not only package files but also package directories, and it can also use the compression feature of Gzip.

For example, the most general usage of this command, such as packing the log directory, can be used

TAR–ZCVF Log.tar.gz/var/log

The parameters here, Z, are compressed with gzip, c means the file is created, v indicates the compressed file is displayed, and F indicates the use of the filename.

To unzip the file you just created, use TAR–ZXVF Log.tar.gz–c/tmp/log

Job: Compress the Lastlog file under/var/log with gzip, then unpack it with gunzip, and pack the ETC directory into the TMP directory with tar

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Linux Command Learning Series 13-gzip,tar command