got a small problem here. im trying to pipe eg: 'ls | more'.
i have created a command line parser which separates ls and more into two commands. i have also created a struct, each struct has a command name, number of arguments, redirect_in, redirect_out, pipe_in, etc etc.... eg:
struct com[0].com_name would be : ls
struct com[0].pipe_to = 1 ( 1 means pipe to command 1 )
struct com[1].com_name would be : more
now when i try and pipe the above ( ls | more ), only the 'ls' command is executed and more is not. the execute method is called from the main class eg :
this is my execute method:
what i think needs to be done is when the 'ls' command is executed, it should go back to the main program, increase 'k++' (increase command by 1) and go back to the execute method without forking again and execute the command pathname of command which was just increased-> but it doesnt seem to be doing that.
Hi,
Can the cd command be invoked using pipes???
My actual question is slightly different. I am trying to run an executable from different folders and the path of these folders are obtained dynamically from the front end. Is there a way in which i can actually run the executable... (2 Replies)
A broken pipe means that you are writing onto a pipe that has been closed by the other end.
i have unix batch which forks some process
and these processes are communicating each other via pipes.
but sometimes i got too many broken pipe error.
how can i search for the cause of these errors,... (1 Reply)
This is something I've given a lot of thought to and come up with no answer.
Say you have a data stream passing from a file, through process A, into process B. Process A only modifies a few bytes of the stream, then prints the rest of the stream unmodified. Is there any way to stream the file... (4 Replies)
Hello all, I am trying to learn more about programming Unix pipes in C.
I have created a pipe that does od -bc < myfile | head
Now, I am trying to create od -bc < myfile | head | wc
Here is my code, and I know I might be off, thats why I am here so I can get some clarification.
#include... (1 Reply)
ls --color=always -laX | awk '{print $1, $3, $4, $2, $8}'
|sort -k 1,1 -k 9,9r
they work separately... but i don't know how to combine this to work.
thx! (1 Reply)
this is my code to try and prinnt out a deck of cards. the print function worked when used inside main without being a function but now i cant get it to work as a function probably since i dont know how to pass a struct array in c. I gave it a shot but i keep getting an assortment of errors. The... (0 Replies)
Hey guys!
First of all english is not my main language so sorry for any english mistakes.
Second im a total beginner in programming, still i have a school work to do and i found a problem. Probably something easy to solve but it's driving me crazy.
So i created a struct, that holds 4 ints:
... (1 Reply)
Hey guys!
First of all english is not my main language so sorry for any english mistakes.
Im from Portugal!
1. The problem statement, all variables and given/known data:
Im having a problema creating and array of structs for a work i need to do. (xLib)
2. Relevant commands, code,... (1 Reply)
I already manage to get the output that i want.. but wat if removing all the pipes and convert it 1 liner with less pipes. My command below can get the ouput that i want. i just want to remove the pipes or less pipes.
#cat file1
us-west-2a running i-3397a421... (2 Replies)
Discussion started by: kenshinhimura
2 Replies
LEARN ABOUT DEBIAN
vodovod
vodovod(6) Games vodovod(6)NAME
vodovod - lead the water from the house to the storage tank
SYNOPSIS
vodovod
DESCRIPTION
Vodovod is a free game, released under GNU GPL license. Graphics and programming are done by Milan Babuskov. This is an over-weekend
project for now, so don't expect miracles. However, game is completely playable.
The goal of the game is to reach the highest possible score. You get a limited number of pipes on each level and need to combine them to
lead the water from the house at the top of the screen to the storage tank at the bottom. For each pipe water goes through, you get 20
points and if you fill the cross-pipe both ways, you get 60 points. At end of each level, you are awarded depending on the skill level:
* Beginner: 100 points
* Toolman: 100 points + number of pipes remaining
* Master plumber: 100 points + 2 x number of pipes remaining
Some of the levels have obstacles where you cannot place pipes, checkpoints through which the water must go and holes in the ground that
slow the flow. Select HELP from the main menu to get more info. The game is playable with joystick/joypad: just move it and press buttons
when you go to Options -> Configure controls
USAGE
The goal of the game is to use pipes to connect the house at the top of the screen with the tank at the bottom. You have time to construct
the initial pipeline before the man enters the house.
For each level you get a limited number of pipes, so use them wisely. If you make a mistake, you can place another pipe over it.
There are certain special blocks in the map:
* Blocked Area - You cannot place pipes on these fields.
* Checkpoint - Your pipeline must go through this field.
* Hole in the ground - Slows down the flow.
SEE ALSO
You can find more information at http://home.gna.org/vodovod/
May 2007 vodovod(6)