![]() ![]() files0-from= F Options -b,Ĭonsider only blanks and alphanumeric characters.įold lower case to upper case characters.Ĭompare according to general numerical value. Which will not display any output, but will create the file output.txt with the same sorted data from the previous command. You can also use the built-in sort option -o, which allows you to specify an output file: sort -o output.txt data.txt To check the output, use the cat command: cat output.txt Using the -o option is functionally the same as redirecting the output to a file neither one has an advantage over the other. You can perform a reverse-order sort using the -r flag. Let's say our input file data.txt contains the following data: For example, the following command: sort -r data.txtīut what about situations where you have a mixture of upper- and lower-case letters at the beginning of your lines? In cases like this, the behavior of sort can seem confusing, but really it just needs some more information from you to sort the data the way you want. Sorting this data without any options, like this: sort data.txtĪs you can see, it's sorted alphabetically, with lowercase letters always appearing before uppercase letters. ![]() This sort is "case-insensitive", and this is the default for GNU sort, which is the version of sort used in GNU/Linux.Īt this point you might be asking yourself, well, if case-insensitive sorting is the default, then what is the " -f/ -ignore-case" option for? The answer has to do with localization settings and bytewise sorting. In brief, "localization" refers to what language the operating system uses, which at the most basic level defines what characters it uses.
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