Copy Files Over SSH
# Copy from local to remote
scp -r /path/to/local/dir user@host:/path/to/remote/dir
# Copy from remote to local
scp -r user@host:/path/to/remote/dir /path/to/local/dir
Copy Files Over SFTP
sftp user@host
put /path/to/local/dir /path/to/remote/dir
Find Files
find . -name "file.txt" # Find files by name
find . -type f -exec sed -i 's/old-text/new-text/g' {} + # Find and replace in files
Get IP Address
curl ifconfig.me
List Contents Of Directory
ls -l
Display The Amount Of Disk Space Used By A Directory
du -sh /path/to/dir
Diff Two Files
diff file1 file2
Create A New File
touch file.txt
Tar
tar -czvf archive.tar.gz /path/to/dir # Archive A Directory
tar -czvf archive.tar.gz /path/to/dir # GZIP A Directory
Search in a file
grep "literal_string" filename
grep "literal_string" filepattern
DNS Lookup
dig example.com
Download
wget https://example.com/file.zip # Download Files
wget -c https://example.com/file.zip # Download Files With Progress Bar
Variables
NAME="John"
echo $NAME
echo "$NAME"
echo "${NAME}!"
String Quotes
NAME="John"
echo "Hi $NAME" #=> Hi John
echo 'Hi $NAME' #=> Hi $NAME
Functions
get_name() {
echo "John"
}
echo "You are $(get_name)"