Linux common Text processing small little tools

I. Common Text Processing tool commands

Cat command:

Cat [OPTION] ... [FILE] ...-A,--show-all equivalent to-vet-b,--number-nonblank to non-null output line number-e equivalent to-VE-E,--show-end s shows $-n at the end of each line,--number to all lines of output-s,--squeeze-blank does not output multiple lines of empty lines-T with-VT equivalent-T,--show-tabs will jump word modifier explicitly Shown as ^i-u (ignored)-V,--show-nonprinting uses ^ and M-references, except LFD and tab--HELP Display this Help message and leave

Cut command:

Cut OPTION ... [FILE] ...-D DELIMITER: Indicates delimiter, default tab-f fileds: #: # field #,#[,#]: Discrete multiple fields, such as 1,3,6 #-#: Continuous multiple fields, for example 1-6 blending makes By: 1-3,7-c--output-delimiter=string Specifies the output delimiter to display the specified column of the file or stdin data cut-d:-f1/etc/passwd cat/etc/p asswd | cut-d:-f7 cut-c2-5/usr/share/dict/words

Sort command:

Sort command: Sort [OPTION] ... [FILE] ... sort [option] ...--files0-from=f option:-N: Numeric sort-R: Reverse order-T: Sort by Field delimiter-K: Specify field to sort-U: Remove duplicate rows-F: Case insensitive

uniq Command:

Uniq command: report or ignore the same row uniq-report or omit repeated lines option:-D: Show only duplicate rows-D: Show all duplicate rows-C: Show only the number of repetitions

WC command:

Wc-print newline, Word, and byte counts for each file WC [OPTION] ... [FILE] ... wc [option] ...--files0-from=f option:-L: Display line number-C: Display number of characters-W: Displays the number of words-l: Shows the longest line contains how many characters-m: Displays the number of characters

TR command:

TR [OPTION] ... SET1 [SET2] option:-C replaces this character set with a complement to the character set in string 1, which requires the character set to be ASCII. -d deletes all input characters in string 1. -S Delete all occurrences of a sequence of characters, leaving only the first one; the string compression is about to recur to a string.

History command:

Option:-C: Empty command history-D: Delete specified row-w: Save command to History file

Tail Command:

Option:-N #: Display after n rows-f: Output append data to screen tail-n 0-f/var/log/messages & #只显示追加的数据 cancel the day after tomorrow ~] #fg1即可

Head command:

Option:-N #: Displays the first n rows-C: Specifies the pre-fetch # bytes

More names:

More [options] file [...] More file This command does not support the page before you want to

Less command:

Less-opposite of more less command supports front and back page, and other matching methods

Paste command:

paste [option]... [file]...    -d  delimiter: Specify delimiter, default with tab    - s :  all rows of the composite line display     paste f1 f2    paste  - S f1 f2[email protected] ~]# paste /etc/fstab /etc/issue\s#kernel \r  on an \m# /etc/fstab# Created by anaconda on Tue Jul  19 14:39:24 2016## accessible filesystems, by reference, are  maintained under  '/dev/disk ' # see man pages fstab (5),  findfs (8),  mount (8)  and/or blkid (8)  for more info#uuid=f83c52ce-5740-4f02-bb87-6e190360dc30 /                         xfs     defaults  0 0uuid= c98144e4-d1b4-45b1-bb22-3112420ea487 /boot                    xfs     defaults  0 0uuid= dbf5c483-133e-4888-bbb1-a9622d83a930 swap                     swap    defaults  0  0#end[[email protected] ~]#

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Linux common Text processing small little tools