bits 11

• awk is run using awk 'awk_program' data-file
• awk programs have the form pattern { action }; pattern { action };
• BEGIN blocks are executed before reading data files
• END blocks are executed after reading data files
• NR is a variable that tells us the number of rows read
• -F '<separator>' is how we can define a field separator for a file
• Space is the default field separator
• FPAT="..." is a way to use regex to define a pattern for each field
• FPAT is only defined in gawk

/awk/ /linux/