Got Linux - shell commands

linux_shell_commands

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# File Transfer
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# Copy files through ssh
scp deployer@fake-server:/var/log/mongodb/mongod.log.2.gz /Users/name/Documents/temp/logs/

# Copy a file from your workstation to a server behind a bastion host
scp -oProxyCommand="ssh -AW %h:%p bastion_user@bastion_ip" file_destination user@destination_IP:/path
scp -oProxyCommand="ssh -AW %h:%p ubuntu@bastion-production" dockerengine_install.sh ubuntu@fake-server:/home/ubuntu/

## Speed up secure file copying (scp) by tarring files before copying them to another server.

# Local > Remote
tar cvzf - -C /Users/nickivons/Documents/temp/dbpath/ . | ssh deployer@fake-server tar xzvf - -C /home/deployer/backups

# Remote > Local
ssh deployer@fake-server "tar czvf - -C /var/lib/mongodb/ ." | tar xzvf - -C /Users/user/Documents/temp/newDbpath

# Remote > Remote
ssh deployer@fake-server "tar czvf - -C /var/lib/mongodb/ ." | pv | ssh deployer@fake-server-2 tar xzvf - -C /home/deployer/backups

# Rsync to copy very large files
rsync -vh -rlptD --chmod=g+w --info=progress2 -e ssh deployer@fake-server:/var/lib/mongodb/ /var/lib/mongodb-bear

##########
# Analyzing File Systems
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#See size of directories
du -sh *

#See space on server
df -h

#See space on individual directories
du -h --max-depth=1
du -h --exclude=./home/user1/nas | grep -E \[0-9]G

#See file sizes in GB
ls -lh

# Find top directories
du -a / | sort -n -r | head -n 5

##########
# Process Management
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# See if mongod (or any process) is running
ps -deaf | grep mongod
ps -aux | grep mongod

# Get details about a process id
ps -Fp $pid

# See what process is running on port 8000
lsof -t -i :8000 

##########
# Server Administration
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# show env variables
printenv

# see what ports are open
netstat -plnt