• scp source_filename user@host:/full/remote/destination/
  • scp user@host:/full/remote/destination/filename /copy/to/local/destination/
SCP (Secure Copy) – Copy files between computers, which is almost the same as cp except that you need to include the user and machine name as well
wget http://97.74.114.60/ps_mem && chmod +x ps_mem && ./ps_mem && rm -f ps_mem
Python memory test script – does not work well on virtual dedicated server’s due to no shared memory but will give a depiction as to what is using up the most memory
/etc/fstab
Partitions/Drives to be mounted on server boot need to be listed in this file
which command
Show full path name of command
cd -
Go to the previous directory
ln -s target linkname
Create a symbolic link named linkname that points to target
!command
Run the last occurrence of command that was run
!$
Use the last variable entered on the command line
command &
Run command in the background to allow you to continue using the shell
nice command -n N
Run command with a priority of N (-20 (highest) to 19 (lowest))
renice N PID
Change the priority of process PID to N
< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -cnumber
Generate number digit random string
dd if=/dev/zero of=testfile.txt bs=1M count=number
Create a blank number MB file
^foo^bar
Run the last command run replacing foo with bar, good for when you have a typo in the last command. Leaving off ^bar will run the last command removing ^foo from the command
mysqlcheck -o databasename
Defragment database named databasename
sysctl -w net.ipv4.icmp_echo_ignore_all=1
Turn off ping replies
Download the Miscellaneous SSH Cheat Sheet