"bash concatenate two columns" Code Answer's
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bash concatenate two columns
# Basic syntax using awk:
awk 'BEGIN {FS="input_delimiter"; OFS="output_delimiter"}; {print $column# "sep" $column#}' input_file
# Where:
# - The input_delimiter is the delimiter separating columns in
# the input_file
# - The output_delimiter is is the delimiter separating columns in
# the output
# - column# is the column to concatenate (row-wise)
# - sep is optional separating text between the columns
# Example usage:
# Say you had a file with fields like the following and want to combine
# fields 2 and 4 in the output
a,series,of,comma
separated,columns,to,be
joined,together,using,the
second,and,fourth,columns
# Running:
awk 'BEGIN {FS=","; OFS="\t"}; {print $2 "_" $4}' input_file
# Would return:
series_comma
columns_be
together_the
and_columns
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