Shell Basics (ii) Cut usage

Shell Basics (ii) Cut usage

Syntax: cut-d ' delimited character ' [-CF] n

-D after specifying delimiters , single quotation marks, must be a single character

-f Specifies the paragraph, which can be separated by commas with multiple numbers

-C is followed by a number that indicates the intercept of the first few characters

-D followed by the delimiter character, where a colon: as the delimiter character,-F 1 is the first paragraph.

Note: The-F and 1 direct spaces are optional.

-D and-C cannot be used simultaneously

# Cut- d ': ' -f 3/etc/passwd ' followed by single quotation marks "

# Cut- D:-F 3/etc/passwd "-D after direct delimiter, without spaces"

# cut-d:-F 3,6,5 passwd "intercept two paragraphs, separated by commas, the numerical order can be reversed, but the results shown are subject to actual,

For example,-f 3,6,5 shows the result is-f 3,5,6 "

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#echo ' 1 2 3 ' > 1.txt

#cut-D "-F 2 1.txt" delimiter is a space, you need to specify a space, enclosed in single quotation marks "

Therefore, it is recommended that the-D followed by a single quotation mark to avoid problems. develop habits.

- c intercept characters, including letters, numbers, symbols

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Shell Basics (ii) Cut usage