In Linux, more means "more". It is a content split-screen command that can display the content of a large text file in pages, allowing users to read the content of the file page by page. It is built-in by default. In various Linux distributions, the syntax is "more [options] filename". The execution of the more command will open an interactive interface. Users can use interactive commands to view or edit content. For example, the enter key is used to move down one line, the space bar is used to move down one page, and "d" is used to move down. Half a page.
#The operating environment of this tutorial: linux7.3 system, Dell G3 computer.
linux more command
In Linux, more means "more" and is a content split-screen command.
The more command can display the contents of a large text file in pages, allowing users to read the contents of the file page by page. It is built into every Linux distribution by default.
The basic format of this command is as follows:
more [選項] 文件名
more The command is relatively simple and generally does not require any options. For the options listed in Table 1, users only need to see and recognize them. .
? ? ? ? ? Options | ? ? ? ? ? Meaning |
---|---|
? ? ? ? ? -f | ? ? ? ? ? ? When calculating the number of lines, use the actual number of lines, not the number of lines after automatic line wrapping. |
? ? ? ? ? -p | ? ? ? ? ? ? Instead of scrolling through each page, the screen is cleared first and then the content is displayed. |
? ? ? ? ? -c | ? ? ? ? ? ? Similar to the -p option, except that the content is displayed first and other old data is cleared. |
-s | ? ? ? ? ? ? When two or more consecutive blank lines are encountered, they are replaced with one blank line. |
? ? ? ? ? -u | ? ? ? ? ? ? Do not display lower quotes (depending on the terminal specified by the environment variable TERM). |
? ? ? ? ? n | ? ? ? ? ? Display the file contents starting from line n, where n represents a number. |
? ? ? ? ? -n | ? ? ? ? ? ? The number of rows displayed at one time, n represents a number. |
more The execution of the command will open an interactive interface, so readers need to understand some interactive commands. Commonly used interactive commands are shown in Table 2.
? ? ? ? ? ? Interactive command | ? ? ? ? ? Function |
---|---|
h or ? | ? ? ? ? ? ? Display interactive command help for the more command. |
? ? ? ? ? q or Q | ? ? ? ? ? Exit more. |
? ? ? ? ? v | ? ? ? ? ? Start an editor on the current line. |
? ? ? ? ? :f | ? ? ? ? ? ? Display the file name and line number of the current file. |
? ? ? ? ?
! | ? ? ? ? ? Execute the specified command in the subshell. |
? ? ? ? ? Enter key | Move down one line. |
? ? ? ? ? space bar | Move down one page. |
? ? ? ? ? Ctrl l | ? ? ? ? ? Refresh the screen. |
? ? ? ? ? = | ? ? ? ? ? ? Displays the line number of the current line. |
? ? ? ? ? ' | ? ? ? ? ? Go to where the last search started. |
? ? ? ? ? Ctrf f | ? ? ? ? ? Scroll down one page. |
? ? ? ? ? . | ? ? ? ? ? ? Repeat the last command entered. |
? ? ? ? ? / String | ? ? ? ? ? ? Search for the specified string. |
? ? ? ? ? d | ? ? ? ? ? Move down half a page. |
? ? ? ? ? b | ? ? ? ? ? Move up one page. |
more命令的使用
1、簡單查看
想檢查/var/log目錄下的日志文件syslog,只需要鍵入:
$ more /var/log/syslog
然后我們可以看到在屏幕左下角有個提示,告訴我們當前的顯示比例為0%。看上去這個文件相當大,所以第一頁是全部頁數(shù)的0%。使用空格鍵可以往下翻頁,然后就可以看到提示的百分比會增加。
2、限制每頁顯示的行數(shù)
在執(zhí)行more命令的時候,它會占用你終端窗口的全部空間用于顯示。但是你可以通過參數(shù)-數(shù)字來限制每頁顯示的行數(shù)。
例如,你希望每頁限制顯示12行,可以通過下面的命令:
$ more -12 /var/log/syslog
現(xiàn)在,你會看到每頁只顯示12行,在按下空格鍵后,就會翻頁顯示后面的12行。
3、顯示用戶提示
我們知道,more命令會在顯示區(qū)域的左下角提示當前內(nèi)容所占的百分比。對于第一次使用more命令的人來說,他或她可能會想知道怎么才能往下翻頁。為了避免這種情況,我們可以在執(zhí)行時增加-d參數(shù),這樣就會額外顯示一行用戶提示“[按空格鍵繼續(xù),‘q‘推出.]
”
如果用戶按了‘空格
‘或’q
‘之外的按鍵,more會顯示一行幫助信息“ [按‘h’鍵查看提示。]
”
如果按下h鍵,會顯示一個幫助信息:
一個有意思的指令是b按鈕,b按鈕允許你退回到前面的頁面。換句話說,b按鈕可以允許向前翻頁。
你可以通過左上角的...前1頁
信息來確認當前顯示的是前面的頁面。
4、從指定行開始顯示
你也可以通過參數(shù)+數(shù)字來指定開始顯示的行,例如,我們有一個15行的文件:
然后我們想從第5行開始顯示這個文件的內(nèi)容,命令看起來會是這個樣子:
$ more +5 doc_30.txt
相關(guān)推薦:《Linux視頻教程》
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