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reverse sshfs
#!/bin/bash
##/*
## * @Author: AllenYL
## * @Date: 2017-11-08 11:37:31
## * @Last Modified by: allen7575@gmail.com
## * @Last Modified time: 2017-11-08 11:37:31
## */
#
# mount local directory to remote through reverse sshfs
#
# usage:
# ./reverse_sshfs.sh [remote_addr] [remote_ssh_port] [remote_user] [local_dir]
#
# [local_dir] is a path relative to this script
#
# This script will automatcally create a directory named "project_$LOCAL_USER" in remote user's home dir,
# and mount [local_dir] to this point. When exit, will umount "project_$LOCAL_USER" and deleted it.
#
##
## linux - how to mount local directory to remote like sshfs? - Super User
## https://superuser.com/questions/616182/how-to-mount-local-directory-to-remote-like-sshfs
##
# source directory of this script
SOURCE_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
LOCAL_USER=$(whoami)
REMOTE_USER="$3"
LOCAL_DIR="$SOURCE_DIR/$4"
REMOTE_DIR="./project_$LOCAL_USER"
LOCAL_ADDR="localhost"
REMOTE_ADDR="$1"
LOCAL_PORT="22"
FORWARD_PORT="10000"
REMOTE_PORT="$2"
LOCAL_SSH="-p $FORWARD_PORT $LOCAL_USER@$LOCAL_ADDR"
REMOTE_SSH="-p $REMOTE_PORT $REMOTE_USER@$REMOTE_ADDR"
SSHFS_OPTION="-o NoHostAuthenticationForLocalhost=yes"
###############
## With ssh, how can you run a command on the remote machine without exiting? - Super User
## https://superuser.com/questions/261617/with-ssh-how-can-you-run-a-command-on-the-remote-machine-without-exiting
##
## Here I use -t to force the allocation of a pseudo-terminal, which is required for an interactive shell.
## Then I execute two commands on the server: first the thing I wanted to do prior to opening the interactive shell
## (in my case, changing directory to a specific folder), and then the interactive shell itself.
## bash sees that it has a pseudo-terminal and responds interactively.
##
###############
## Why does an SSH remote command get fewer environment variables then when run manually? - Stack Overflow
## https://stackoverflow.com/questions/216202/why-does-an-ssh-remote-command-get-fewer-environment-variables-then-when-run-man
##
## sourcing the profile before running the command
## ssh user@host "source /etc/profile; /path/script.sh"
##
## usage:
## ssh -t -p 88 root@10.1.53.168 -R 10000:localhost:22 \
## "source /etc/profile; sshfs -p 10000 allenyllee@localhost:/media/allenyllee/Project/Project/server_setup/nvidia_docker/project ./project2;bash"
## options:
## -v Verbose
## -X X11 forwarding
## -t pseudo-terminal for an interactive shell
##
ssh -X -t $REMOTE_SSH -R $FORWARD_PORT:localhost:$LOCAL_PORT \
"source /etc/profile;mkdir $REMOTE_DIR; \
sshfs $SSHFS_OPTION $LOCAL_SSH:$LOCAL_DIR $REMOTE_DIR; bash; \
umount $REMOTE_DIR; rm -r $REMOTE_DIR"
@aniongithub

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@aniongithub aniongithub commented Dec 30, 2019

Thanks for the awesome script! If I were doing this from a script without requiring an interactive shell, just the local folder mounted remotely so a docker container can mount that volume, would this work without the -t? I have a separate script that can call umount for cleanup.

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