SSH Shell Access

SSH (Secure Shell) provides an encrypted connection between your own system directly to the server over what is otherwise an insecure network (the Internet). We don’t enable SSH by default but can be enabled upon request.

Use your ftp…  server address to logon aswell as your ftp username/password on port 50022


unzip should be available from the command line.

Terminal control characters for C-shell (csh)

^h,

backspace

erase previously typed character
^u erase entire line of input so far typed
^d end-of-input for programs reading from terminal
^s suspend writing to terminal (freezes terminal)
^q continue writing to terminal
^z suspend currently running job; restart with bg or fg
^c kill currently running program and allow clean-up before exiting
^\ emergency kill of currently running program with no chance of cleanup

Also see a list of special characters that should not be used in filenames.

Login and authentication

login access computer; start interactive session
logout disconnect terminal session
passwd change local login password; you must set a strong password that is not easily guessed

Information

date show date and time
history list of previously executed commands
man show online documentation by program name
info online documentation for GNU programs
w,

who

who is on the system and what they are doing
whoami who is logged onto this terminal
top show system stats and top CPU using processes
uptime show one line summary of system status

File management

cat combine files
cp copy files
ls list files in a directory and their attributes
mv change file name or directory location
rm remove files
ln create another link (name) to a file
chmod set file permissions
crypt encode/decode a file with a private key
gzip,

gunzip

compress/decompress a file
find find files that match specific criteria

Display contents of files

cat copy files to display device
more show text file on display terminal with paging control
head show first few lines of a file(s)
tail show last few lines of a file; or reverse line order
vi full-featured screen editor for modifying text files
pico simple screen editor for modifying text files
grep display lines that match a pattern
lpr send file to printer
pr format file with page headers, multiple columns, etc.
diff compare two files and show differences
cmp compare two binary files and report if different
comm compare two files; show common or unique lines
od display binary files as eqivalent octal/hex codes
strings show printable text embedded in binary files
file examine file(s) and guess type: text, data, program, etc.
wc count characters, words, and lines in a file

Directories

cd change to new directory
mkdir create new directory
rmdir remove empty directory (you must remove files first)
mv change name of directory
pwd show current directory