• Apr 3, 2025 •LeifMessinger
0 likes • 8 views
#!/usr/bin/env bash #Splits a command across a number of CELL machines user=$(whoami) if [[ -z $user ]]; then echo "whoami failed. Exiting..." exit 1 fi command="$1" if [[ -z $command ]]; then echo "Need to put in a command." exit 1 fi shift array=("$@") let start=8 let stop=18 for ((i = $start; i <= $stop; i++)); do extraZero=$(if [[ "$i" -lt 10 ]]; then echo "0"; fi) domain="CELL${extraZero}${i}-CSE.ENG.UNT.EDU" let "index = i - start" echo ${#array[@]} if [[ ${#array[@]} != 0 ]] && [[ $index -ge ${#array[@]} ]]; then echo "$index > ${#array[@]}" break fi ssh -o StrictHostKeyChecking=accept-new "${user}@${domain}" -t "$command ${array[$index]}" & done
• Sep 23, 2024 •AustinLeath
0 likes • 9 views
CLIENT_VPN_ID="cvpn-endpoint-xxxxxxxxxxxx" for region in $(aws ec2 describe-regions --query "Regions[].RegionName" --output text); do echo "Searching in region: $region" aws ec2 describe-client-vpn-endpoints --region $region --query "ClientVpnEndpoints[?ClientVpnEndpointId=='$CLIENT_VPN_ID']" --output table done
• Nov 14, 2021 •LeifMessinger
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#!/bin/bash #Takes all the c and h files in the current directory and prints them #Yup, it's that easy for file in *.h *.hpp *.c *.cpp; do #If it exists if [ -f "$file" ]; then echo "//===============$file===============" cat $file fi done
• Nov 18, 2022 •AustinLeath
0 likes • 1 view
echo -e ${PATH//:/\\n} | awk '{print length, $0}' | sort -n | cut -f2- -d' '
• Oct 9, 2023 •C S
0 likes • 178 views
# Update all npm packages under the scope defined by the PREFIX variable ("foo"). PREFIX="foo"; npm ls | grep "$PREFIX" | awk -F/ '{print $NF}' | sed 's/@.*//' | xargs -I package npm update @"$PREFIX"/package
• Jan 12, 2023 •LeifMessinger
0 likes • 4 views
#!/bin/bash #Originally made by Isaac Cook https://gist.github.com/icook/5400173 #Modified by Leif Messinger #upload_key.sh [server_ip [server2_ip [...]]] #To be run locally on a linux computer if [ -e ~/.ssh/id_rsa.pub ]; then echo "SSH Key already exists on local machine" else echo "Generating SSH key on local machine" ssh-keygen -t rsa #generates id_rsa and id_rsa.pub chmod -R 700 ~/.ssh #Sets permissions of ssh folder ssh-add #Adds keys (and passwords?) to ssh_agent. (hopefully doesn't require password) fi echo "Loading client public key into memory" pubKey=$(<~/.ssh/id_rsa.pub) for server do echo "Adding client public key to $server remote server authorized keys" #Idiot Isaac Cook didn't know about ssh-copy-id #ssh-copy-id even checks if your key already exists #In fairness, I didn't either until researching ssh-add ssh-copy-id -i ~/.ssh/id_rsa.pub $server #In theory, this should prompt for a username #ssh $server "mkdir -p ~/.ssh; #Make the folder if not already made # echo \"$pubKey\" >> ~/.ssh/authorized_keys; #Append your public key to the server's authorized_keys # chmod 700 ~/.ssh && chmod 600 ~/.ssh/authorized_keys" #Set the correct permissions of those files #echo "Adding server public key to local authorized keys" #ssh $server "ssh-copy-id -i ~/.ssh/id_rsa.pub \$SSH_CLIENT" #this might need some awk, as $SSH_CLIENT spits out clientip portnumber echo "Displaying server public key" ssh $server "cat ~/.ssh/id_rsa.pub" #Though, he did give me a good idea echo "Displaying keys authorized on $server (you can paste them in your authorized_keys file)" ssh $server "cat ~/.ssh/authorized_keys" #echo "Appending keys authorized on $server to your local authorized_keys" #ssh $server "cat ~/.ssh/authorized_keys" >> ~/.ssh/authorized_keys done echo "SSH keys schronized successfully!"