Linux Character Conversion instructions

1.tr [-ds] SET1 ... : Can be used to delete text in a message, or to convert text messages, parameters:

1)-D: Delete message SET1 this string

2)-S: Replace duplicate string

Requires two strings or regular expressions, with no arguments, to perform a substitution operation, corresponding to the source string and the replacement string, respectively

2.col [-xfb][-l Buffer list]: Filter control characters, parameters,

1)-X: Converts the TAB key to the equivalent SPACEBAR (tested, the directive does not find its effect)

2)-B: When there is a backslash in the text, only the last character of the backslash is preserved, and the symbol for the special table key is removed.

3.join [-ti12] file1 file2: Merging two files, parameters:

1)-t:join partition data by default with a space character, and compare the data of "first field"

2)-I: Ignore case differences

3)-1: This is the number 1, which field will be used to analyze the first file

4)-2: Which field will be used to analyze the second file

4.paste [-d] file1 file2: Paste two files directly together, in the Middle with TAB key separated, parameters,

1)-D: Can be followed by a delimiter, the default tab to split

2)-: If the file section is written--representing data from standard input

5.expand [-T] File: To change the TAB key to a space, in general, a tab will be replaced with 8 space bar, we can customize the number (by setting the number after-T).

6.split [-BL] file PREFIX: Split file, Parameters:

1)-B: Back can be divided into the file size, you can add units, for example, B, k,m, etc.

2)-L: Split by number of rows

3) PREFIX: Represents the preamble meaning, can be used as the leading text of the split file

If you need to take data from a standard input, you can also use "-" instead of file.

This article is from "Tiger Brother's Blog" blog, please be sure to keep this source http://7613577.blog.51cto.com/7603577/1596101

Linux Character Conversion instructions