awk how to define delimiter code example

Example: awk delimiter

# by default, awk uses empty space(s) as field seperator
# we can specify field seperator ourselves using -F flag

# SINGLE field seperator
echo 'a+b=c' | awk -F'=' '{print NF, $1, $2}'
# NF in awk stands for number of fields
# Returns
2	a+b 	c

# MULTIPLE field seperators
echo 'a+b=c' | awk -F'[+=]' '{print NF, $1, $2, $3}'
# Returns
3	a	b	c