To extract specific columns from a file, ____ command is used.

Quiz on filtering commands, sort command, unique and tr commands. Here are some examples of Unix simple filters: cat: This command concatenates files and prints them to standard output. It can also be used to create new files. grep: This command searches for a pattern in a file or files and prints the lines that match the pattern. head: This command prints the first few lines of a file. sort: This command sorts the lines of a file in alphabetical or numerical order. tail: This command prints the last few lines of a file. tr: This command translates, squeezes, and/or deletes characters... Show more

Quiz on filtering commands, sort command, unique and tr commands.

Here are some examples of Unix simple filters:
cat: This command concatenates files and prints them to standard output. It can also be used to create new files.
grep: This command searches for a pattern in a file or files and prints the lines that match the pattern.
head: This command prints the first few lines of a file.
sort: This command sorts the lines of a file in alphabetical or numerical order.
tail: This command prints the last few lines of a file.
tr: This command translates, squeezes, and/or deletes characters from a file.

These are just a few examples of the many Unix simple filters that are available. These filters can be used to perform a variety of tasks, such as searching for text in a file, sorting a list of items, or removing duplicate lines from a file.

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