About awk conditions

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# 1  
Old 10-29-2009
About awk conditions


Can you explain why in the first 2 commands the awk does not print anything? Is it looking of a specific format ?


$ echo 12a3 | awk '($1>=2) {print $1}' # prints nothing
$ echo 123a | awk '($1>=2) {print $1}' # prints nothing
$ echo a123 | awk '($1>=2) {print $1}'
$ echo a123a | awk '($1>=2) {print $1}'
$ echo a12a3a | awk '($1>=2) {print $1}'

# 2  
Old 10-29-2009
To compare the first numbers of the string with a numeric value you can use the int() function:

echo 12a3 | awk 'int($1) >= 2'

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