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Re: apt-get aborts in subshell with redirections on Debian 12



On 2023-09-24, John Crawley wrote:

> errors=$( sudo apt-get install mirage 2>&1 1>/dev/tty )
> echo "$errors"

#!/bin/bash
errors=$(sudo apt-get install unknown 2>&1 1>/dev/tty)
echo "output: $errors"
errors=$(sudo apt-get install mirage 2>&1 1>/dev/tty)
echo "output: $errors"

debian version 12.1
ii  apt                 2.6.1        amd64 
ii  bash            5.2.15-2+b2  amd64 
ii  sudo           1.9.13p3-1+deb12u1 amd64

> Going straight to "Abort" which is what happens if apt has no stdin. But surely it does?
>
> Running the same command on Debian 11 works as expected, waiting for USER response at the prompt.

# ./test 
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
output: E: Unable to locate package unknown
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  gir1.2-gexiv2-0.10
The following NEW packages will be installed:
  gir1.2-gexiv2-0.10 mirage
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 120 kB of archives.
After this operation, 649 kB of additional disk space will be used.
Do you want to continue? [Y/n] n
Abort.
output: 

It waits until I type 'n'

Perhaps you have another command disturbing tty ?
Or check sudo ?


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