Linux less/more命令详解程序员

    less 的用法比起 more 更加的有弹性。在 more 的时候，我们并没有办法向前面翻， 只能往后面看，但若使用了 less 时，就可以使用 [pageup] [pagedown] 等按键的功能来往前往后翻看文件，更容易用来查看一个文件的内容！除此之外，在 less 里头可以拥有更多的搜索功能，不止可以向下搜，也可以向上搜。

less常见命令参数

-a  ........  --search-skip-screen 
                 Forward search skips current screen. 
 -b [N]  ....  --buffers=[N] 
                 Number of buffers. 
 -B  ........  --auto-buffers 
                 Don't automatically allocate buffers for pipes. 
 -c  -C  ....  --clear-screen --CLEAR-SCREEN 
                 Repaint by clearing rather than scrolling. 
 -d  ........  --dumb 
                 Dumb terminal. 
 -D [xn.n]  .  --color=xn.n 
                 Set screen colors. (MS-DOS only) 
 -e  -E  ....  --quit-at-eof  --QUIT-AT-EOF 
                 Quit at end of file. 
 -f  ........  --force 
                 Force open non-regular files. 
 -F  ........  --quit-if-one-screen 
                 Quit if entire file fits on first screen. 
 -g  ........  --hilite-search 
                 Highlight only last match for searches. 
 -G  ........  --HILITE-SEARCH 
                 Don't highlight any matches for searches. 
 -h [N]  ....  --max-back-scroll=[N] 
                 Backward scroll limit. 
 -i  ........  --ignore-case 
                 Ignore case in searches that do not contain uppercase. 
 -I  ........  --IGNORE-CASE 
                 Ignore case in all searches. 
 -j [N]  ....  --jump-target=[N] 
                 Screen position of target lines. 
 -J  ........  --status-column 
                 Display a status column at left edge of screen. 
 -k [file]  .  --lesskey-file=[file] 
                 Use a lesskey file. 
 -L  ........  --no-lessopen 
                 Ignore the LESSOPEN environment variable. 
 -m  -M  ....  --long-prompt  --LONG-PROMPT 
                 Set prompt style. 
 -n  ........  --line-numbers 
                 Don't use line numbers. 
 -N  ........  --LINE-NUMBERS 
                 Use line numbers. 
 -o [file]  .  --log-file=[file] 
                 Copy to log file (standard input only). 
 -O [file]  .  --LOG-FILE=[file] 
                 Copy to log file (unconditionally overwrite). 
 -p [pattern]  --pattern=[pattern] 
                 Start at pattern (from command line). 
 -P [prompt]   --prompt=[prompt] 
                 Define new prompt. 
 -q  -Q  ....  --quiet  --QUIET  --silent --SILENT 
                 Quiet the terminal bell. 
 -r  -R  ....  --raw-control-chars  --RAW-CONTROL-CHARS 
                 Output "raw" control characters. 
 -s  ........  --squeeze-blank-lines 
                 Squeeze multiple blank lines. 
 -S  ........  --chop-long-lines 
                 Chop long lines. 
 -t [tag]  ..  --tag=[tag] 
                 Find a tag. 
 -T [tagsfile] --tag-file=[tagsfile] 
                 Use an alternate tags file. 
 -u  -U  ....  --underline-special  --UNDERLINE-SPECIAL 
                 Change handling of backspaces. 
 -V  ........  --version 
                 Display the version number of "less". 
 -w  ........  --hilite-unread 
                 Highlight first new line after forward-screen. 
 -W  ........  --HILITE-UNREAD 
                 Highlight first new line after any forward movement. 
 -x [N[,...]]  --tabs=[N[,...]] 
                 Set tab stops. 
 -X  ........  --no-init 
                 Don't use termcap init/deinit strings. 
               --no-keypad 
                 Don't use termcap keypad init/deinit strings. 
 -y [N]  ....  --max-forw-scroll=[N] 
                 Forward scroll limit. 
 -z [N]  ....  --window=[N] 
                 Set size of window. 
 -" [c[c]]  .  --quotes=[c[c]] 
                 Set shell quote characters. 
 -~  ........  --tilde 
                 Don't display tildes after end of file. 
 -# [N]  ....  --shift=[N] 
                 Horizontal scroll amount (0 = one half screen width)

more常见命令参数

usage: more [-dflpcsu] [+linenum | +/pattern] name1 name2 …

常用的命令展示

显示文件中从第3行起的内容

more  +3  /etc/passwd

从文件中查找第一个出现”omd”字符串的行，并从该处前两行开始显示输出

more +/omd /etc/passwd 【+/pattern 在每个档案显示前搜寻该字串（pattern），然后从该字串前两行之后开始显示】

设定每屏显示行数

more -3 /etc/passwd 【-n   定义屏幕大小为n行】

列一个目录下的文件,每4个一列

ls /root/|more –4

more和less的使用技巧

less: -N  显示行号

    首次展开一页面

   回车表示一行

   空格表示一屏

  PageUp 向前翻一行

  PageDown向下走

more:

   回车向下

   空格一屏

   PageUp不能向上走

   PageDown向下走

more和less的区别