Linux

Commands

For use in the service console

`ls -l`	List directory contents (`-l` long format) - Colour codes
`pwd`	Present working directory
`cp <destination>`	Copy a file
`rm –i <file>`	Remove (delete) file (`-i` prompts before remove)
`rm –d -r -f <folder>`	Remove (delete) folder and contents without prompting
`more <file>`	Views a file (read only), `q` to exit, `+line` to start from line
`diff <file1> <file2>`	Difference between two files
`grep <find> <file>`	Find all occurrences in file
`tail <file>`	Displays the last 10 lines of a file, `-f` follows any updates (eg to monitor a log file)
`init <level>`	Level 0 - Halt system, level 6 - Reboot system
`df -h`	Disk space summary
`du -sh`	Directory space usage summary
`chmod +x <file>`	Add execute permission to a file
`uname -a`	Running OS info
`arp -n`	IP -> MAC arp table
`ifconfig`	Interface config (Unix equiv of Windows' ipconfig)
grep <proc>	Find running process info
`kill <pid>`	Kill a process

VI is a bit of a pain to use, go slowly, and use [Esc] regularly to get out of the current mode after each operation

Crib sheet for VI mode commands...

`i`	Insert characters
`x`	Delete character
`r`	Replace character
`cw`	Overwrite word (use any delimiter)
`o`	Insert line
`dd`	Delete current line
`<x>yy`	Yank (copy) next x lines (inclusive of current line, default `x` is 1)
`p`	Paste yanked lines
`/<string>`	Search for next occurrence of string
`:g/<find>/s//<replace>/g`	Find and replace
`:wq`	Write (save) and Quit
`:q!`	Quit (don't save)
`:undo`	Undo last action

VIm = Vi Improved, the commands are the same, but theres extra features

Login to the ESX console using your user account and create a new directory (within /home/user
- mkdir vim
Logon to the VCS machine (UKLONVCP1) and copy across the installation files, stored under the Software_Reposity directory (substitute user and ESXserver appropriately).
- pscp C:\Software_Repository\vim-7.1.tar.bz2 user@ESXserver:/home/user/vim
Back on the ESX console become root, change into the directory where vim is
Extract the package
- bunzip2 -c vim-7.1.tar.bz2 | tar -xf -
Move into the vim71 folder
Run configure
- ./configure
Compile the package
- make
Install the package
- make install

`:syntax enable`	Turns on syntax formatting
`vim one.sh two.sh three.sh`	Opens up three files for editing
`:wnext`	Writes changes to existing file and moves to next file(omit w not to write)
`:wprevious`	Writes changes to existing file and moves to previous file (omit w not to write)
`v`	Toggle visual mode (so you can select text), use y/p to yank/paste selected text
VIM manual section 7.5	Copy text between files

Create Account - Use useradd <user> to add a new user account with the default policy settings
Modify Password - Use passwd <user> to change password for user. To breach minimum complexity rules you must be logged in at the console (in the DC not remotely)
Modify Expiry - To disable the password expiry policy for a account that already exists use chage -M 99999 <user> , to disable for all future account (ie modify the default policy) use esxcfg-auth --passmaxdays=99999