Trade data for industrial machinery

List of contents of this article:

• 1, linux text search keyword command linux text search
• 2, windows8.1 How to search for keywords in the excel table in the folder< /Li>
• 3, win7 system how to search for keywords contained in the file
• 4
   、What are the reserved words of the C language system

linux text search keyword command linux text search

grep command is to find lines containing specified patterns in the file. For example, to find a line containing example in the file file.txt, you can execute the following command: grep examplefile.txt grep will output all lines containing example.Ignore case. By default, grep is case-sensitive.

Find file: find/(search range)-name search keyword-typed. Find folder: find/ (search scope) - name search keyword - print. In addition, the find command can also be searched through regular expressions.

awk is a powerful text analysis tool. Compared with grep's search and sed's editing, awk is particularly powerful when analyzing data and generating reports. Simply put, awk is to read the file line by line, slice each line with space as the default separator, and then perform various analysis and processing on the cut part.

Two ways: one is to directly enter the editing mode, and after entering, find what you want by matching keywords;One is the direct cat file and then the grep keyword.

Use the find command to find files or folders under Linux: Find files: find/ (search range) -name search keyword-typed. Find folder: find/ (search scope) - name search keyword - print. In addition, the find command can also be searched through regular expressions.

The grep command is very useful in Linux. It works with the pipeline (|) and is very powerful for searching for text files. If you want to find a string in several text files, you can use the 'grep' command.' Grep' searches for the specified string in the text.

windows8.1 How to search for keywords in the excel table in the folder

1. As shown in the figure, enter "search content" in the search text box, and the system will automatically filter out the specified file. Click the "View" tab, click the "Preview Pane" button to highlight it, click "Workbook xlsx" in the file list to highlight it, and part of the worksheet is displayed in the preview pane on the right.

2. First, open the excel in our computer to open the file that needs to be searched, select "Start", and then click the "Find and Select" option. Then select the "Find" option or use the shortcut key "ctrl+F" directly.

3. Software version: win10 Click the disk where the file you want to search is located, such as "D disk" and "C disk". If you don't remember which disk the file you want to search is on, click "This Computer" or "My Computer", and then click the search box on the right side of the window.

4. For example, I now enter the folder "Bajiang Pearl Materials". The EXCEL I need to find is in it, but I don't know which form it is, only a certain other keyword.

How to search for keywords contained in the file

1. As shown in the figure , enter [content:] directly in the search position plus the keyword of the file content you want to search.

2. First, use the shortcut key "win+r" to open "Run", and then enter "service.msc". Then find "Windows Search" in the open window and set it to "Start". Method: First, open the "Control Panel" in the "Start" menu.

3. If you want to search for files, you must first protectThe certificate search service is turned on. Right-click on the computer--Management to open the computer management dialog box.

4. First, open the Windows 7 system. Windows 7 64-bit is used here, and other versions are also acceptable.

What are the reserved words in the C language system

1. In C language, reserved words have special meanings and functions, and cannot be used as general identifiers. This is correct. Users cannot use reserved words as their own use. Identifier's. There are 32 reserved words in C language, such as int, double, long, for, if, etc.

2. The keywords in C language are all lowercase, so A and C are wrong.The keyword of the union is union, so the D option is wrong.

3. Reserved words are keywords. A total of 32. Because the C language is case-sensitive, int and Int are different. So here A float is float, not B is the keyword. It means that there is a symbol. C int is, integer is not. D char is not Char. Choose B.