Bash

Online Documentation

• Advanced Bash-Scripting Guide: http://tldp.org/LDP/abs/html/
• Another tutorial: http://pegasus.rutgers.edu/~elflord/unix/bash-tute.html

Parse command-line arguments

for arg in "$@"; do
    # do something with arg
done

bash script examples

• dicom_dir_to_analyze - convert all Analyze files in a directory tree to DICOM format
• dns_subnet - find all known DNS entries for class C subnet
• get_mac - get the current MAC address for an IP address

Looping

sh_files=$(ls -d *.sh 2>/dev/null)

for my_file in "${sh_files[@]}"; do
    echo "$my_file"
done

Logging

./run_my_script > my_log.txt 2>&1