Convert input into args $ find -name "W*.java" | xargs -r cat Redirect stdout and stderr to /dev/null and run command in background $ ./deploy/startstop.sh > /dev/null 2>&1 & Copy file to server $ scp file.extention user@server.com:/a/remote/directory Download file from server $ scp user@server.com:/a/remote/directory/file.txt /a/local/directory Rename / move file $ mv old_name new_name List all environment variables $ printenv #or $ env Unzip $ unzip compressed-file.zip Empty a file without deleting it $ > file.log Print last X lines of a file $ tail -X file.log See disc usage with dept X $ du -h -dX See free disc space $ df -h Tcpdump $ tcpdump -n -s 0 -i eth0 -w /tmp/file_name.pcap Find files by regex and delete them $ find . -type f -regextype sed -regex '.*/dpa-events.[a-z0-9\-]*.[0-9]*.log' -delete Tunnel trafic from a localhost port #8989 is the local port, xx.xx.xx.xx:8080 is the remote ip and port $ ssh -N -C -v -L8989:xx.xx.xx.xx:8080 user@aserver.com
