cut
Remove sections from each line of files (https://www.gnu.org/software/coreutils/manual/html_node/cut-invocation.html)
To cut a specific field index using a custom delimiter
cut -d '<delimiter>' -f <field_index> <file>
To cut a range of fields
cut -d '<delimiter>' -f <start_index>-<end_index> <file>
To cut from a specific field index to the end of the line
cut -d '<delimiter>' -f <start_index>- <file>
To cut specific character positions (by index or range)
cut -c <character_positions> <file>
To cut specific byte positions
cut -b <byte_positions> <file>
To cut fields with a custom output delimiter
cut -d '<delimiter>' -f <fields> --output-delimiter='<output_delimiter>' <file>
To cut fields matching everything except the specified fields (complement)
cut -d '<delimiter>' -f <fields> --complement <file>