Compression Tools in Linux[TAR,gzip]

Compression Tools:

tar: to compress files

compress files:
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syn: tar -cvf <tarfilename> <file(s)>

ex: tar -cvf files.tar hello.txt hi.txt raj.txt
 -c: create
 -v: verbose
 -f: tar file name

Uncompress files:
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syn: tar -xvf files.tar


tar with GZIP feature:
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 compress:   tar -czvf files.tar.gz file1 file2 file3 file4
 uncompress: tar -xzvf files.tar.gz

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gzip & gunzip:

gzip: to compress file(s)
 ex: gzip hello.txt

gunzip: to uncompress the file(s)
 ex: gunzip hello.txt.gz

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Storing and Analysing Logs:

What is a log file:
A log file is that which have information about all activities done on a linux serer.
By default log files will be available under /var/log/ folder.

Files:

messages: Contains most of the information about different activites
secure : contains security related messages like logins, logouts etc.,

/etc/rsyslog.conf: Configuration file where we will have information aout logfiles and when they are uodated