LINUX

LINUX LESS指令

介紹

less指令用來檢視檔案且每次僅輸出一頁。

語法

less [options] [files]
Code language: Bash (bash)

常用的options

-c Clear the screen before displaying the next page. This avoids scrolling and may be more comfortable on the eyes. -m Print a more verbose prompt, displaying the percentage of the file displayed so far. -N Display line numbers. -r Display control characters literally; normally less converts them to a human-readable format. -s Squeeze multiple, adjacent blank lines into a single blank line. -S Truncate long lines to the width of the screen, instead of wrapping.
Code language: plaintext (plaintext)

常用的按鍵

h, H View a help page. Space bar, f, ^V, ^F Move forward one screenful. Enter Move forward one line. b, ^B, ESC-v Move backward one screenful. / Enter search mode. Follow it with a regular expression and press Enter, and less will look for the first matching line. ? Same as /, but it searches backward in the file. n Next match: Repeat your most recent search forward. N Repeat your most recent search backward. v Edit the current file with your default text editor (the value of environment variable VISUAL, or if not defined, EDITOR, or if not defined, the program vi). <, g Jump to beginning of file. >, G Jump to end of file. :n Jump to next file. :p Jump to previous file.
Code language: plaintext (plaintext)

範例

你可以檢視檔案且每次僅輸出一頁:

⤍ less myfile
Code language: Bash (bash)

常常搭配管線來閱讀最後的輸出:

⤍ command1 | command2 | command3 | less
Code language: Bash (bash)

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