On one of my Raspberry Pi boxes, somehow I could not access files over SFTP (SSH File Transfer Protocol) via FileZilla.
I would consistently get this error:
"Connection timed out after 20 seconds of inactivity"
Figuring the exact cause took a while.
TL;DR: SFTP uses an interactive non-login shell, then interprets the output from that shell. For that kind of shell, ensure few or none scripts run that output text.
These links finally got me to the cause
These helped me solve the cause
This solved my problem
This is what my /etc/bash.bashrc.local looked like:
# /etc/bash.bashrc.local for SUSE Linux
#
# PLEASE DO NOT CHANGE /etc/bash.bashrc There are chances that your changes
# will be lost during system upgrades. Instead use /etc/bash.bashrc.local
# for bash or /etc/ksh.kshrc.local for ksh or /etc/zsh.zshrc.local for the
# zsh or /etc/ash.ashrc.local for the plain ash bourne shell for your local
# settings, favourite global aliases, VISUAL and EDITOR variables, etc ...
. /etc/bash.aliases/_load-aliases.sh
#
# End of /etc/bash.bashrc.local
#
This is what it looks like now:
# /etc/bash.bashrc.local for SUSE Linux
#
# PLEASE DO NOT CHANGE /etc/bash.bashrc There are chances that your changes
# will be lost during system upgrades. Instead use /etc/bash.bashrc.local
# for bash or /etc/ksh.kshrc.local for ksh or /etc/zsh.zshrc.local for the
# zsh or /etc/ash.ashrc.local for the plain ash bourne shell for your local
# settings, favourite global aliases, VISUAL and EDITOR variables, etc ...
if [ "$SSH_TTY" ]
then
source /etc/bash.aliases/_load-aliases.sh
fi
#
# End of /etc/bash.bashrc.local
#
–jeroen
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