terminal1.py

import subprocess
import signal
import sys
import os
from os.path import expanduser
from os import popen
with os.popen('clear') as f:
	clear = f.read()
user=os.getenv('USER')
pc_name=os.uname()[1]



def main():
        while(1):
                try:
                        raise_parameter_error=0
                        comm=take_input()
                        command=comm.split()
                        i=0
                        while i<len(command):
                                if(command[i][-1:]=='\\' and (i+1<len(command))):
                                        command[i]=command[i][:-1]+" "+command[i+1]
                                        command.remove(command[i+1])
                                i+=1
                        parameters=[]
                        other=[]
                        for x in command[1:]:
                                if x[0]=='-':
                                        parameters+=list(x[1:])
                                        if x[1]=='-':
                                                raise_parameter_error=1
                                else:
                                        other+=[x]
			if command[0]=='cd':
                                cd_self(other)
			elif command[0]=='help':
                                help_display(other)
			else:
				subprocess.call(comm, shell = True)
                    
                except Exception as inst:
                        print "Error processing your request, use 'help' to get list of supported commands"

#####################################################
#### PROGRAM RELATED FUNCTIONS
#####################################################

def cd_self(other):
        if len(other)>0 and (os.path.isfile(other[0])==False) and (os.path.exists(other[0])==True):
                os.chdir(other[0])
        elif len(other)==0:
                os.chdir(os.environ['HOME'])
        elif os.path.isfile(other[0]):
                print "bash: cd: "+other[0]+": Not a directory" 
	else:
                print "bash: cd: "+other[0]+": No such file or directory"

#####################################################
#### LETS GIVE IT SOME TERMINAL TOUCH
#####################################################
# FROM http://stackoverflow.com/questions/287871/print-in-terminal-with-colors-using-python
class bcolors:
    HEADER = '\033[95m'
    OKBLUE = '\033[94m'
    OKGREEN = '\033[92m'
    WARNING = '\033[93m'
    FAIL = '\033[91m'
    ENDC = '\033[0m'

def take_input():
        return raw_input(user+'@'+pc_name+':'+see_directory()+'$ ')



def see_directory(x=0):
        path=os.getcwd()
        if x==0:
                return path.replace(os.environ['HOME'],'~',1)
        else:
                return path

def help_display(command):
	print '''GNU bash, version 4.3.30(1)-release (x86_64-pc-linux-gnu)
These shell commands are defined internally.  Type `help' to see this list.
Type `help name' to find out more about the function `name'.
Use `info bash' to find out more about the shell in general.
Use `man -k' or `info' to find out more about commands not in this list.

A star (*) next to a name means that the command is disabled.

 job_spec [&]                            history [-c] [-d offset] [n] or hist>
 (( expression ))                        if COMMANDS; then COMMANDS; [ elif C>
 . filename [arguments]                  jobs [-lnprs] [jobspec ...] or jobs >
 :                                       kill [-s sigspec | -n signum | -sigs>
 [ arg... ]                              let arg [arg ...]
 [[ expression ]]                        local [option] name[=value] ...
 alias [-p] [name[=value] ... ]          logout [n]
 bg [job_spec ...]                       mapfile [-n count] [-O origin] [-s c>
 bind [-lpsvPSVX] [-m keymap] [-f file>  popd [-n] [+N | -N]
 break [n]                               printf [-v var] format [arguments]
 builtin [shell-builtin [arg ...]]       pushd [-n] [+N | -N | dir]
 caller [expr]                           pwd [-LP]
 case WORD in [PATTERN [| PATTERN]...)>  read [-ers] [-a array] [-d delim] [->
 cd [-L|[-P [-e]] [-@]] [dir]            readarray [-n count] [-O origin] [-s>
 command [-pVv] command [arg ...]        readonly [-aAf] [name[=value] ...] o>
 compgen [-abcdefgjksuv] [-o option]  >  return [n]
 complete [-abcdefgjksuv] [-pr] [-DE] >  select NAME [in WORDS ... ;] do COMM>
 compopt [-o|+o option] [-DE] [name ..>  set [-abefhkmnptuvxBCHP] [-o option->
 continue [n]                            shift [n]
 coproc [NAME] command [redirections]    shopt [-pqsu] [-o] [optname ...]
 declare [-aAfFgilnrtux] [-p] [name[=v>  source filename [arguments]
 dirs [-clpv] [+N] [-N]                  suspend [-f]
 disown [-h] [-ar] [jobspec ...]         test [expr]
 echo [-neE] [arg ...]                   time [-p] pipeline
 enable [-a] [-dnps] [-f filename] [na>  times
 eval [arg ...]                          trap [-lp] [[arg] signal_spec ...]
 exec [-cl] [-a name] [command [argume>  true
 exit [n]                                type [-afptP] name [name ...]
 export [-fn] [name[=value] ...] or ex>  typeset [-aAfFgilrtux] [-p] name[=va>
 false                                   ulimit [-SHabcdefilmnpqrstuvxT] [lim>
 fc [-e ename] [-lnr] [first] [last] o>  umask [-p] [-S] [mode]
 fg [job_spec]                           unalias [-a] name [name ...]
 for NAME [in WORDS ... ] ; do COMMAND>  unset [-f] [-v] [-n] [name ...]
 for (( exp1; exp2; exp3 )); do COMMAN>  until COMMANDS; do COMMANDS; done
 function name { COMMANDS ; } or name >  variables - Names and meanings of so>
 getopts optstring name [arg]            wait [-n] [id ...]
 hash [-lr] [-p pathname] [-dt] [name >  while COMMANDS; do COMMANDS; done
 help [-dms] [pattern ...]               { COMMANDS ; }
'''        

if __name__=="__main__":
        main()