Page 156 - DCAP602_NETWORK_OPERATING_SYSTEMS_I

Network Operating Systems-I

notes wc : word count
wc -l filename.txt : tells how many lines are in filename.txt

cp : copy a file
cp filename filename.backup : copies filename to filename.backup
cp -a /home/burst/new_design/* /home/burst/public_html/ : copies
all files, retaining permissions form one directory to another.
cp -av * ../newdir : Copies all files and directories recurrsively in the current directory INTO
newdir

mv : Move a file command
mv oldfilename newfilename : Move a file or directory from oldfilename to newfilename

rm : delete a file
rm filename.txt : deletes filename.txt, will more than likely ask if you really want to delete it
rm -f filename.txt : deletes filename.txt, will not ask for confirmation before deleting.

rm -rf tmp/ : recursively deletes the directory tmp, and all files in it, including subdirectories. BE
VERY CAREFULL WITH THIS COMMAND!!!

tar: Creating and Extracting .tar.gz and .tar files
tar -zxvf file.tar.gz : Extracts the file
tar -xvf file.tar : Extracts the file
tar -cf archive.tar contents/ : Takes everything from contents/ and puts it into archive.tar
gzip -d filename.gz : Decompress the file, extract it

Zip files:Â Extracting .zip files shell command
unzip file.zip

firewall -Â iptables commands

iptables -i input -s ipaDDressHere -j Drop : This command stops any connections from
the IP address
iptables -L : List all rules in iptables

iptables -F : Flushes all iptables rules (clears the firewall)
iptables --save : Saves the currenty ruleset in memory to disk service iptables restart : Restarts
iptables

apache shell commands
httpd -v : Outputs the build date and version of the Apache server.

150 LoveLy professionaL university