473,890 Members | 2,014 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

bash shell scripting

keyvanrahmadi
57 New Member
Sorry if this post is rather long but hopefully you wont get bored half way through. I have a project in hand which i have started and have a deadline of 1 week. Basically what i need to do is to create a shell script in Bash for the game Hangman. I am sure everyone is well aware of the game. The down side is that i can not use "sed" or "awk". FUN FUN

I am at my ends wit now and truley utterly lost, so any help would go a long way to stop my pulling my wife's hair out ( i ran out of my own hair a long time ago :)

The game has to have the option for 1 player or 2 player, which needs to be stated at the started, when the script is run. This is what i have done to remedy this option:

Expand|Select|Wrap|Line Numbers
  1.  
  2. #!/bin/bash
  3.  
  4. echo "Choose number of Players:"
  5. read players
  6. if [ $players -eq 1 ]
  7. then
  8. echo "The script for thsi hasnt been written."
  9. elif [ $players -eq 2 ]
  10. then
  11. echo "choose a word for player two to guess:"
  12. read player2word
  13. else
  14. echo "incorrect option.. choose again"
  15. fi
  16.  
I am sure there is a better way of doing this, so if any suggestions would be great.

If a 1 player option is choosen, then the following which i havent even coded should happen:

1- A random word from a different file needs to be chosen.
2- The player should be told the word has been chosen and the display should be - - - - (number of dashes should be = to length of word.
3- player is prompted to guess a letter. If a correct letter is chosen then display the message: You have chosen <letter>, then echo the letter and place the chosen letter in correct field.



now 2 player is same as above except that player 1 has to input the word for player 2 to guess. So far i have done this:

Expand|Select|Wrap|Line Numbers
  1.  
  2. life=10
  3. blank="......................"
  4. word=$player2word
  5. letters=$(echo $word | wc -c)
  6. letters=$(( $letters - 1 ))
  7. template="$(echo $blank | cut -c1-$letters)"
  8. remaining=$letters
  9. guessed=""
  10. guesses=0
  11. badguesses=0
  12. echo " ************** The word you are trying to guess has $letters letters **************"
  13. echo ""
  14. echo ""
  15.  
  16. while [ $remaining != $word ] ; do
  17.  
  18. echo -n "Word is: $template Please choose a Letter: " ;
  19. read guess
  20. guesses=$(( $guesses + 1 ))
  21. echo " you have chosen $guess"
  22.  
  23. if echo $guessed | grep -i $guess > .temp1 ; then
  24.  
  25. echo "You've already guessed that letter. Try again!"
  26.  
  27. elif ! echo $word | grep -i $guess > .temp1 ; then
  28.  
  29. echo "Sorry, the letter \"$guess\" is not in the word."
  30. guessed="$guessed$guess"
  31. badguess=$(( $badguess + 1))
  32. life=$(( $life -1 ))
  33. echo " you have $life left"
  34. else
  35.  
  36. echo "Good going! The letter $guess is in the word!"
  37. echo $letter
  38.  
  39. fi
  40. done
  41.  
  42. echo -n "Congratulations! You guessed $word in $guesses guesses"
  43.  
  44. echo " with $badguesses bad guesses"
  45.  
  46.  
problems with above script is as follow:

1- Not finished
2- when a letter is chosen the script excepts the fact its a correct or an incorrect letter but dosent insert it into ..... location.
3- i am sure there is more, best thing i can suggest if you can run it and see the result then you will have a better understading of it.

I know this is a tall order, but any help would be greatly appriciated and in my part main thing is to learn and understand from all you guys out there who have far more knowledge than me in shell scripting.

thank you

K
May 15 '07 #1
14 4920
arne
315 Recognized Expert Contributor
Expand|Select|Wrap|Line Numbers
  1.       while [ $remaining != $word ] ; do
  2.       echo -n "Word is: $template Please choose a Letter: " ;
  3.       read guess
  4.       guesses=$(( $guesses + 1 ))
  5.       echo " you have chosen $guess"
  6.       if echo $guessed | grep -i $guess > .temp1 ; then
  7.           echo "You've already guessed that letter. Try again!"
  8.       elif ! echo $word | grep -i $guess > .temp1 ; then
  9.           echo "Sorry, the letter \"$guess\" is not in the word."
  10.           guessed="$guessed$guess"
  11.           badguess=$(( $badguess + 1))
  12.           life=$(( $life -1 ))
  13.           echo " you have $life left"
  14.       else
  15.           echo "Good going! The letter $guess is in the word!"
  16.           guessed="$guessed$guess"
  17.           echo $letter
  18.       fi
  19.  
  20.       ndx=0
  21.       template2=""
  22.       while [ $ndx != $(( $letters )) ] ; do
  23.           val1=${word:ndx:1}
  24.           val2=${template:ndx:1}
  25.           if [ "$val1" == "$guess" ] ; then
  26.           template2="$template2$guess"
  27.           elif [ "$val2" != '.' ] ; then
  28.           template2="$template2$val2"
  29.           else
  30.           template2="$template2."
  31.           fi
  32.           ndx=$(( $ndx + 1 ))
  33.       done
  34.       template=$template2
  35.       done
  36.  
The relevant additions are from line 20 onwards (I also added line 16 for convenience).
The idea is to assemble the template every time the player has guessed a letter.
For this, I am using a second template, which I copy over at the end.
Extracting letter by letter from the searched word and comparing with the guess
and already identified letters we assemble the new template to be displayed.

This should work (except that the code regards 'a' and 'A' as different letters,
while your code does not - I left that for you :) ). If it does not work in all cases,
it may give you an idea for a possible solution.
May 16 '07 #2
keyvanrahmadi
57 New Member
I have pulled the script apart, figuring out what you have done. thank you for that. it has helped me alot and getting me closer towards getting it finished.

I had couple of more questions, which i was hoping you or anyone else can clarify.

1- the user input as $guess gets compared to $letter, but surely when $guess = $word it should kick the program into echo the last message, but it dosent. any suggestions on that?

2- I have also added echo $guess, to show what letter have been guessed. How can i keep a record of all the letters guessed?

3- I am using a variable called $blank"....", whole idea was to replace the letters with ....., dose unix have a built in function which allows me to do that?

thx again

K
May 16 '07 #3
arne
315 Recognized Expert Contributor
1- the user input as $guess gets compared to $letter, but surely when $guess = $word it should kick the program into echo the last message, but it dosent. any suggestions on that?
Don't understand what you mean here. Can you elaborate?

2- I have also added echo $guess, to show what letter have been guessed. How can i keep a record of all the letters guessed?
That's why I added line 16 in the code posted. I don't make no difference if the letter is in the word or not. So that should be fixed already :)

3- I am using a variable called $blank"....", whole idea was to replace the letters with ....., dose unix have a built in function which allows me to do that?
One solution would be to use the length of the word to be guessed in order to create the '....' word. But bash also knows a string replacement function:

Expand|Select|Wrap|Line Numbers
  1. ${string/substring/replacement}
  2.  
which will replace 'substring' in 'string' with 'replacement'. Should work if 'substring' is equal to 'string' ...

HTH,
arne
May 17 '07 #4
keyvanrahmadi
57 New Member
Don't understand what you mean here. Can you elaborate?
Sorry what i meant to say was, as it stands if the player is trying to guess a letter from a word, the game will continue asking for letter to be guessed even when the whole word has already been guessed, this dose not allow the game to finish and will keep on asking for letters.


That's why I added line 16 in the code posted. I don't make no difference if the letter is in the word or not. So that should be fixed already :)
Thats what i thought line 16 was for :) how can i keep count of all the letters guessed? as it stands it will replace the previous guess

One solution would be to use the length of the word to be guessed in order to create the '....' word. But bash also knows a string replacement function:

Expand|Select|Wrap|Line Numbers
  1. ${string/substring/replacement}
  2.  
which will replace 'substring' in 'string' with 'replacement'. Should work if 'substring' is equal to 'string' ...

HTH,
arne
ok i will look into it and if you dont mind i will questions regarding it later on.

thx alot mate

Keyvan
May 17 '07 #5
arne
315 Recognized Expert Contributor
Sorry what i meant to say was, as it stands if the player is trying to guess a letter from a word, the game will continue asking for letter to be guessed even when the whole word has already been guessed, this dose not allow the game to finish and will keep on asking for letters.
Change
Expand|Select|Wrap|Line Numbers
  1. while [ $remaining != $word ] ; do
  2.  
to
Expand|Select|Wrap|Line Numbers
  1. while [ $template != $word ] ; do
  2.  
and the code will exit the while loop if the word is complete.

Thats what i thought line 16 was for :) how can i keep count of all the letters guessed? as it stands it will replace the previous guess
No, it won't, $guessed is increasing, I think.
May 17 '07 #6
keyvanrahmadi
57 New Member
Change
Expand|Select|Wrap|Line Numbers
  1. while [ $remaining != $word ] ; do
  2.  
to
Expand|Select|Wrap|Line Numbers
  1. while [ $template != $word ] ; do
  2.  
and the code will exit the while loop if the word is complete.


No, it won't, $guessed is increasing, I think.
the exit is as you suggested. $guessed is not increasing as far as i can tell but again what do i know.. i have only been learning shell scripting for about 2 weeks, i will double check it and play around with it. I also had a though about getting rid of the $blank..

Expand|Select|Wrap|Line Numbers
  1. blank="......................"
  2. #word1=getword
  3. word=$player2word
  4. letters=$(echo $word | wc -c)
  5. letters=$(( $letters - 1 ))
  6. template="$(echo $blank | cut -c1-$letters)"
  7. remaining=$letters
  8.  
i was going to change the template line to:
Expand|Select|Wrap|Line Numbers
  1. template1="$(echo $word | tr '[a-z A-Z 0-9]' '_')"
  2.  
what do you think?

Thx

Keyvan
May 17 '07 #7
arne
315 Recognized Expert Contributor
the exit is as you suggested. $guessed is not increasing as far as i can tell but again what do i know..
Lines 10 and 16 do exactly that, no? Or do I get you wrong here?
Put an additional echo before the ndx=0 line and you will see that
$guessed is getting longer with every letter.

i was going to change the template line to:
Expand|Select|Wrap|Line Numbers
  1. template1="$(echo $word | tr '[a-z A-Z 0-9]' '_')"
  2.  
what do you think?
Looks good to me (and it's more elegant than using the length as I proposed :-) ).
May 17 '07 #8
keyvanrahmadi
57 New Member
Lines 10 and 16 do exactly that, no? Or do I get you wrong here?
Put an additional echo before the ndx=0 line and you will see that
$guessed is getting longer with every letter.



Looks good to me (and it's more elegant than using the length as I proposed :-) ).
might be more elegant but it dosent work :(

it should in theory creat - - - depending on number of letters but it only creates 1 dash.
May 17 '07 #9
arne
315 Recognized Expert Contributor
might be more elegant but it dosent work :(

it should in theory creat - - - depending on number of letters but it only creates 1 dash.
Hmm, it works fine for me ... except that I replaced $template1 by $template in my code.
May 17 '07 #10

Sign in to post your reply or Sign up for a free account.

Similar topics

3
8262
by: John Bowling | last post by:
I have a java (2.0) program with the following lines: String cmdArray1 = {"lp", "-d", "hp4m", "MyFile"}; System.out.println(Runtime.getRuntime().exec(cmdArray1)); It compliles properly, but does not print the file to the printer. It displays the following as the return from Runtime...: java.lang.UNIXProcess@1034bb5
3
2680
by: William Park | last post by:
I'm very excited to announce shell interface to GTK+2 (2.6.1) for Bash. It read XML syntax describing the widget layout, and returns user selection as shell variable or runs shell command as callback. It's designed for simple GUI dialog or layout, with the emphasis on getting the user data back into shell. For the moment, the shell variable and command are disabled. It just prints to stdout, instead. But, you can change it easily.
11
3004
by: Magnus Jonneryd | last post by:
Hi, I'm planning on writing a program that interactively is fed input via a shell (bash). I also want to be able to write a shell script that executes various commands related to my program. In short i want to provide input to a program using some (or all) of the functionality found in bash. It's mainly the format of the file I'm having trouble with. I wanted to be able to write something like this: #!/bin/bash for x in xs
7
5575
by: chakkaradeepcc | last post by:
HI all, How to execute bash scripts from python (other than using os.popen) and get the values that those bash scripts return. I would be happy if someone could help me out in this.. thanks in advance.. With Regards,
4
1890
by: 4zumanga | last post by:
I have a bunch of really horrible hacked-up bash scripts which I would really like to convert to python, so I can extend and neaten them. However, I'm having some trouble mapping some constructs easily, and was wondering if anyone know of a guide to mapping simple uses of command line programs to python. For an example, the kind of thing I am thinking of are things like (yes, this is horrible code). # These are a run of a program I...
16
3961
by: John Salerno | last post by:
Hi all. I just installed Ubuntu and I'm learning how to use the bash shell. Aside from the normal commands you can use, I was wondering if it's possible to use Python from the terminal instead of the normal bash commands (e.g. print instead of echo). My main reason for asking is that I like using Python for everything, and if I don't need to learn the bash 'language', then I won't just yet. Thanks.
10
4465
by: Isaac Gouy | last post by:
$ ./test_fail 1 Floating point exception - but this leaves 'somefile' zero size $ ./test_fail 1>somefile Floating point exception
1
3291
by: Fredrik Lundh | last post by:
John Lawrence wrote: doesn't exactly work for Python scripts, though: $ cat env.py #!/usr/bin/env python import os os.environ = "hello"
6
1882
by: Frantisek Malina | last post by:
What is the best way to do the regular bash commands in native python? - create directory - create file - make a symlink - copy a file to another directory - move a file - set permissions I need to write a program that creates real application/FTP accounts
0
11207
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
10794
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
10896
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
10443
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
0
9612
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
1
8000
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
7153
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
1
4652
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
3
3259
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.