TSV a CSV File Bash
# On OSX you cannot use \t for tab.
# Instead cntrl+v then insert a literal tab after s/
sed 's/ /,/g' input_file > output_file
Troubled Tapir
# On OSX you cannot use \t for tab.
# Instead cntrl+v then insert a literal tab after s/
sed 's/ /,/g' input_file > output_file