AWK: Remove All Blank Spaces From String / Field

To remove all blank spaces from a string or field in AWK, you can use the gsub function.

Here is an example of how you can remove all blank spaces from a string:

# Define the string
str = "  This   is   a   string   with   multiple   spaces   "

# Remove all blank spaces from the string
gsub(/ /, "", str)

# Print the modified string
print str

This will output the string "Thisisastringwithmultiplespaces".

You can also use the gsub function to remove all blank spaces from a field. For example, consider the following input file:

field1 field2
  value1   value2

To remove all blank spaces from the second field, you can use the following AWK script:

# Read the input file
{
    # Remove all blank spaces from the second field
    gsub(/ /, "", $2)

    # Print the modified fields
    print $1, $2
}

This will output the following:

field1 field2
value1 value2

Overall, the gsub function is a useful tool for removing all blank spaces from a string or field in AWK. It allows you to easily modify strings and fields and perform other tasks based on the modified values.