awk -F',' '{sum+=$57;} END{print sum;}' file.txt

​

# Basic syntax:

awk '{var += $column_number} END{print var}' your_file.txt

# Where:

#   - var is simply a variable that stores the growing sum as it gets

#       incremented as the file gets processed line by line (i.e. "sum" isn't

#       a special keyword or anything as might be implied by other answers)

#   - += $column_number has awk add the value from column "column_number" to

#       the growing sum stored in var. Note, by default any run of spaces

#       and/or tabs and/or newlines are used to separate columns in awk

#   - END is used to execute additional commands after all the input is read.

#       Here, it prints the value of var to STDOUT

​

# Example usage:

# Say you have a TSV file with the following values and want the sum of the

# numbers in the third column:

a   b   1   c

d   e   1   f

g   h   2   i

j   k   3   l

m   n   5   o

​

awk '{total += $3} END{print total}' your_file.tsv

--> 12

​

# Note, with awk you can easily sum columns for which a condition is true, e.g.:

awk '{ if (NR>1 && NR<5) {total += $3}} END{print total}' your_file.tsv

--> 6

# Where the above command gets the sum of column 3 for the 2nd-4th rows of

#   the file