Linux cutting command split, which can cut log files and text files

1. Split description

 

Split can be used to cut a log file to facilitate log processing. For example, if there is a 12 GB log, you need to delete a row of data and know the row number. However, using SED and VI is slow,

You can first split and then delete the line, and then re-combine it.

 

Ii. Instructions for use

 

[Root @ bogon desktop] # split -- Help

 

Usage: Split [Option] [input [prefix]

Output fixed-size pieces of input to prefixaa, prefixab,...; default

Size is 1000 lines, and default prefix is 'x'. With no input, or when input

Is-, read standard input.

 

Mandatory arguments to long options are mandatory for short options too.

-A, -- suffix-length = N use suffixes of length N (default 2)

-B, -- bytes = size put size bytes per output file

-C, -- line-bytes = size put at most size bytes of lines per output file

-D, -- Numeric-suffixes use numeric suffixes instead of alphabetic

-L, -- lines = Number put number lines per output file

-- Verbose print a diagnostic to standard error just

Before each output file is opened

-- Help display this help and exit

-- Version output version information and exit

 

Size may have a multiplier Suffix: B for 512, K for 1 K, M for 1 Meg.

 

-The last few digits of a cut file name, expressed in digits. The default value is the size of the Two-B cut files-C the number of bytes per line of the cut files-the last few digits of the cut file name Replace the letters. By default, the file is saved with the letter XX-L. Each file contains fewer lines. Iii. Examples   1. Production File Viewing  [Root @ bogon desktop] # lltotal 388-rw-r -- r -- 1 Root 4803 Feb 26 2009 gnome-terminal.desktop-rw-r -- r -- 1 Root 349027 May 5 mysql_data.gz-rw ------- 1 Root 1108 Apr 25 new filedrwxrwxrwx 2 root Root 4096 Apr 24 nfs-RW-r -- 1 Root 285 May 5 split. log 2. After cutting, the file name suffix is 3 letters  [Root @ bogon desktop] # split-A 3 split. log [root @ bogon desktop] # lltotal 396-rw-r -- r -- 1 Root 4803 Feb 26 2009 gnome-terminal.desktop-rw-r -- r -- 1 Root 349027 May 5 mysql_data.gz-rw ------- 1 Root 1108 Apr 25 new filedrwxrwxrwx 2 root Root 4096 Apr 24 nfs-RW-r -- 1 Root 285 May 5 split. log-RW-r -- 1 Root 285 May 5 xaaa 3. After the cut, the file name suffix is 3 letters. The cut file contains two lines of content for each file,  [Root @ bogon desktop] # split-A 3-L 2 split. log [root @ bogon desktop] # lltotal 412-rw-r -- r -- 1 Root 4803 Feb 26 2009 gnome-terminal.desktop-rw-r -- r -- 1 Root 349027 May 5 mysql_data.gz-rw ------- 1 Root 1108 Apr 25 new filedrwxrwxrwx 2 root Root 4096 Apr 24 nfs-RW-r -- 1 Root 285 May 5 split. log-RW-r -- 1 root 76 May 5 23:17 xaaa-RW-r -- 1 Root 109 May 5 23:17 xaab-RW-r -- r root 100 May 5 xaac 4. After the cut, the file name suffix is 3 (BIT) numbers, the cut file, each file two lines of content,  [Root @ bogon desktop] # split-A 3-L 2-D split. log [root @ bogon desktop] # lltotal 436-rw-r -- r -- 1 Root 4803 Feb 26 2009 gnome-terminal.desktop-rw-r -- r -- 1 Root 349027 May 5 mysql_data.gz-rw ------- 1 Root 1108 Apr 25 new filedrwxrwxrwx 2 root Root 4096 Apr 24 nfs-RW-r -- 1 Root 285 May 5 split. log-RW-r -- 1 root 76 May 5 x000-rw-r -- r -- 1 Root 109 May 5 x001-rw-r -- r -- 1 Root 100 May 5 x002-rw-r -- r -- 1 root 76 May 5 xaaa-RW-r -- 1 Root 109 May 5 xaab-RW-r -- 1 Root 100 May 5 xaac Iv. ReferenceMan split

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Author: Phoenix dancer QQ: 578989855