LeetCode #192: Word Frequency
0 likes • Oct 15, 2022 • 42 views
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# Three ways of checking if a file exists in a shell scriptFILE=/etc/resolv.confif test -f "$FILE"; thenecho "$FILE exists."fiif [ -f "$FILE" ]; thenecho "$FILE exists."fiif [[ -f "$FILE" ]]; thenecho "$FILE exists."fi
#!/bin/bash#Originally made by Isaac Cook https://gist.github.com/icook/5400173#Modified by Leif Messinger#upload_key.sh [server_ip [server2_ip [...]]]#To be run locally on a linux computerif [ -e ~/.ssh/id_rsa.pub ];thenecho "SSH Key already exists on local machine"elseecho "Generating SSH key on local machine"ssh-keygen -t rsa #generates id_rsa and id_rsa.pubchmod -R 700 ~/.ssh #Sets permissions of ssh folderssh-add #Adds keys (and passwords?) to ssh_agent. (hopefully doesn't require password)fiecho "Loading client public key into memory"pubKey=$(<~/.ssh/id_rsa.pub)for serverdoecho "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-addssh-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 portnumberecho "Displaying server public key"ssh $server "cat ~/.ssh/id_rsa.pub"#Though, he did give me a good ideaecho "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 $server "cat ~/.ssh/authorized_keys" >> ~/.ssh/authorized_keysdoneecho "SSH keys schronized successfully!"
# Update all npm packages under the scope defined by the PREFIX variable ("foo").PREFIX="foo"; npm ls | grep "$PREFIX" | awk -F/ '{print $NF}' | sed 's/@.*//' | xargs -I package npm update @"$PREFIX"/package
touch /tmp/login1.txt /tmp/login2.txtwhile [ true ]dowho | gawk '{ print $1 }' > /tmp/login2.txtcomm -13 /tmp/login1.txt /tmp/login2.txt#Just a bit easier to read#diff /tmp/login1.txt /tmp/login2.txtcat /tmp/login2.txt > /tmp/login1.txtsleep 1done
#!/bin/bash# Recursively find all .svelte files in the current directory and its subdirectoriesfind . -type f -name "*.svelte" -o -name "*.html" -o -name "*.htm" | while read file; do# Replace all h1 tags with the specified formatsed -i 's/<h1>\(.*\)<\/h1>/<h1 id="\1">\1<\/h1>/g' "$file"# Replace all h2 tags with the specified formatsed -i 's/<h2>\(.*\)<\/h2>/<h2 id="\1">\1<\/h2>/g' "$file"# Remove whitespace from the id attribute valuefor i in {0..10} ; dosed -i 's/\(id="[^"]*\)\W\([^"]*"\)/\1\2/g' "$file"donedone
## Austin Leath# checks for /Desktop symlink. Creates the symlink if it doesnt already exist##Fetch the target user if desired, otherwise use the currently logged in user.if [ "$4" != "" ]; thenTARGET_USER=$4elseTARGET_USER=$3fiif [ "$5" != "" ]; thenDIRECTORY_NAME=$5elseTARGET_USER="$3 Desktop"fi# FunctionsCHECK_SYMLINK() {if test -f "/Desktop"; thenecho "/Desktop exists"elseecho "/Desktop does not exist"fi}CHECK_SYNTHETIC_CONF() {if test -f "/etc/synthetic.conf"; thenecho "/etc/synthetic.conf exists"elseecho "/etc/synthetic.conf does not exist"fi}CREATE_SYMLINK() {if [[ $(CHECK_SYNTHETIC_CONF) != "/etc/synthetic.conf exists" ]]; thenecho "/etc/synthetic.conf does not exist. creating.."touch /etc/synthetic.confchown -R root:wheel /etc/synthetic.conffiif grep -q "$DIRECTORY_NAME" /etc/synthetic.conf; thenecho "$DIRECTORY_NAME already exists"exit 1elseecho "$DIRECTORY_NAME\t/Users/$TARGET_USER/Desktop" >> /etc/synthetic.conffiecho "/Desktop symbolic link created"}if [[ $(CHECK_SYMLINK) != "/Desktop exists" ]]; thenCREATE_SYMLINKfiexit 0