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Questions tagged [yes]

For the questions about `yes` command which outputs a string repeatedly until killed

12 questions
64
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3 answers

How does `yes` write to file so quickly?

Let me give an example: $ timeout 1 yes "GNU" > file1 $ wc -l file1 11504640 file1 $ for ((sec0=`date +%S`;sec<=$(($sec0+5));sec=`date +%S`)); do echo "GNU" >> file2; done $ wc -l file2 1953 file2 Here you can see that the command yes writes…
Pandya
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53
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5 answers

What is the point of the "yes" command?

There is a yes command in unix/linux which basically infinitely prints y to the stdout. What is the point of it, and how is it useful?
Cemre
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28
votes
2 answers

Why does "yes&" crash my Bash session?

"Yes, and..." is a wonderful rule-of-thumb in improvisational comedy. Not so much in the UNIX world. When I run the admittedly silly yes& command, I cannot interrupt it. The terminal crashes or gets stuck into a loop. I expect the yes process to be…
Sebastian Carlos
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18
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1 answer

What happens when writing gigabytes of data to a pipe?

Let's say I have a makefile with a recipe called hour_long_recipe, which as its name suggests takes an hour to run. At random points throughout the recipe it asks yes/no questions. Let's say it asks 10 questions in total. One possible (and often…
NeatNit
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9
votes
1 answer

How to pipe a 'yes' or 'y' into a program while invoked with 'sudo' in bash?

How to pipe a Y or yes to a program while invoking with sudo? We can type like this yes | command yes | yum update How to pipe the y from yes into a program via sudo like the following? yes| sudo command The y from yes is be passed into command…
Abhik Bose
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3
votes
1 answer

Can you rescue a shell from an accidental "yes" command?

Scenario: I'm running a bunch of commands, some of which prompt for "yes/no" answers. I accidentally type yes as a command instead of as a response to a prompt. OOPS. Now my shell looks like this: $ yum install -y something-important ... useful…
Indigenuity
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3
votes
1 answer

yes | apt-get install --fix-broken

I am trying to write a non-interactive system update script. Question: if the following works well: yes | dpkg --configure -a will the following work also very well?: yes | apt-get install --fix-broken
Vlastimil Burián
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3
votes
2 answers

How to use `yes` with `xargs -p`?

Let's say I have ls | xargs -n1 -p rm, how do I use yes or yes n to automatically answer the questions generated by the -p flag? I tried yes n | (ls | xargs -n1 -p rm) but didn't work. UPDATE: The question is not really about rm, it's about how to…
Gabriel
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1
vote
1 answer

If /dev/random is implemented as a pseudo-device, why isn't "yes"?

yes produces a stream of "y" chars, or other requested. If Unixen have a pseudodevice for random numbers, why not useful streams like this too?
interstar
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1
vote
1 answer

How to exit out of a 'yes' loop

Using the command yes you can make a loop in the Linux terminal.  How do you exit out of said loop?  (I tried Ctrl+C but it didn't work).
John D
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0
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0 answers

Inquirer program answer questions by piping

Hi I have written this program with inquirer.js it has a list question and after that a text input. I want to answer both questions with piping. If I just keep the list question, I can easily use yes 1 | command and it selects the first option and…
Steve Moretz
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0
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1 answer

What happens when piping the `yes` to another command?

If the yes command echos "y" continuously until killed, then it will never get done right? If it will never get done then how does it pipe it's output to the next command??
yaquawa
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