Some Useful Unix Aliases and Tips 
alias rm rm -i   delete command but inquire first--safer 
  
alias permitr chmod go+r    set file access so group/others can read
it 
   
alias printl lpr   print to the default printer 
 
alias printp "pstext \!^ | lpr -Ppclab"   print to postscript print in
 the pc lab (old) 
  
alias printmac "pstext \!^ | lpr -Pmaclab"   (old) 
grep '[target]' [filename] search for this target (text) in this file
*  [wildcard symbol] 
 
ls -l [filename]  list the file's attributes (permissions,
size)