Shulou(Shulou.com)06/03 Report--

Linux commands for beginners-File View

Text keywords: Linux, frequently used commands, file viewing

Cat: view the contents of the file more: view the contents of the file by paging, flip down less: view the contents of the file by paging, head: view the header of the file tail: view the tail of the file wc: display the line, word and byte statistics of the file grep: find keywords and print matching lines echo: display a line of specified text 1, cat

View the contents of the file

Usage: cat [options] [file]-b: display line numbers, blank lines do not display line numbers-n: display line numbers, including blank lines

II. More

View the contents of the file in pages, view the next page through spaces, enter to view the next line, and Q to exit the view.

Usage: more [options] [file]-d: display the prompt message, otherwise you will only hear the tone-s: merge when you encounter more than two blank lines, improve reading efficiency + num: display from the num line-num: set the number of lines per page + / pattern: search for the pattern string before display Then enter enter after entering reading mode from near this position: turn down 1 line space: scroll down one screen Ctrl+B: return to the previous screen =: output the line number of the current line Q: exit

III. Less

View the contents of the file in pages, view the next page through the space, flip the arrow keys up and down, and Q exit the view.

Usage: less [option] [file]-e: leave automatically after the file is displayed-N: display the line number of each line and enter after reading mode: scroll one space: scroll one page / string: look down for the specified content? String: find the specified content up b: turn back one page d: turn back half a page Q: exit

IV. Head

View the high-quality content of the file. The first 10 lines are displayed by default.

Usage: head [options] [file]-c nK: display the contents of the nKB before the file-n: display the contents of the first n lines of the file

5. Tail

View the tail of the file. The last 10 lines are displayed by default.

Usage: tail [options] [file]-c nK: display the contents of the nKB at the end of the file-n: display the contents of the last n lines of the file-f: dynamically display the contents of the file (keep reading the last contents), press Ctrl+C to exit

VI. Wc

Display file, word and byte statistics

Usage: wc [options] [File]-c: display file byte statistics-l: display file line statistics-w: display file word statistics

7. Grep

Find keywords and print matching lines

Usage: grep [option] matching pattern [file]-I: ignore case-v: take inverse match-w: match word-- color: display color

VIII. Echo

Displays a line of specified text

Usage: echo [option] [string]-n: do not output newline (default echo output will break)-e: support escape characters at the beginning of the backslash, mask the original meaning of the characters after the backslash\ an alarm\ b backspace key\ f enter the form format, retain the cursor position after the line break\ t generate horizontal Tab\ v generate vertical Tab

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.