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Pipes not working as expected on Mac


Pipes not working as expected on Mac

By : Naga Jyotsna
Date : November 17 2020, 01:00 AM
will help you fgets() reads till newline character \n and also includes it into the buffer to which the line was read. So in your case sender has put a newline at the end of each line
So do
code :
while(fgets(msg,sizeof(msg),stdin) != NULL)


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Java exec() does not return expected result of pipes' connected commands

Java exec() does not return expected result of pipes' connected commands


By : user1694553
Date : March 29 2020, 07:55 AM
wish helps you Still didn't found proper solution to execute piped commands with Runtime.exec, but found a workaround. I've simply wrote these scripts to separate bash files. Then Runtime.exec calls these bash scripts and gets expected result.
Regex get content between two pipes AND return a space where two pipes are next to each other with no spaces

Regex get content between two pipes AND return a space where two pipes are next to each other with no spaces


By : user3137906
Date : March 29 2020, 07:55 AM
wish helps you How can I get all content between pipes and return a space where it comes across two pipes next to each other? , In Ruby I'd not bother with a regex:
code :
str = '|test1| test2|test3 || test 4 |'
str.split('|')[1 .. -1].map{ |s| (s.strip.empty?) ? ' ': s.strip } #=> ["test1", "test2", "test3", " ", "test 4"]
pipes and forks issue - some input in pipes isn't cleared properly

pipes and forks issue - some input in pipes isn't cleared properly


By : Phina Musekiwa
Date : March 29 2020, 07:55 AM
I wish did fix the issue. In the child you're not using the return value from the call to read (number of bytes read), and also in the parent you're not sending the nul char that ends a string. So in the child you're reusing part of the buffer last read when you send a string shorter than the last one.
You may try sending the nul char in the parent:
code :
write(fd[1], "login ", 6);
write(fd[1], vect[1], strlen(vect[1]) +1);
minishell created in c not working as expected, pipes related

minishell created in c not working as expected, pipes related


By : Kumar P
Date : March 29 2020, 07:55 AM
Pipes.Concurrent: Sent signal is delivered one click later than expected

Pipes.Concurrent: Sent signal is delivered one click later than expected


By : Wiseman3
Date : March 29 2020, 07:55 AM
like below fixes the issue Using the latest buffering strategy means there's always a value available to read in the buffer, so await will always return immediately; and send will likewise always succeed, so long as it gets a chance to run. A test program I wrote worked okay in ghci, but when compiled it never let the thread run that was trying to read from the console and send; I just got an endless stream of 0 until I terminated the program.
Your consumer run doesn't have anything in it that would cause it to pause, so it may similarly be starving the thread that is trying to send to output. If this is the case, a small threadDelay 100 or so before each call to run might help.
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