Shell programming (eight) text viewing and processing tools

Text viewing and processing tools: WC, cut, Sort, Uniq, diff, Patch

Wc:word Count

WC [OPTION] ... [FILE] ...

-l:lines

-w:words

-c:bytes

Cut

Cut OPTION ... [FILE] ...

OPTION:

-D CHAR: Delimiter with the specified character;

-F Fields: the selected field;

#: The specified single field;

#-#: multiple consecutive fields;

#,#: discrete multiple fields;

Sort

Sort [OPTION] ... [FILE] ...

-N: Sort based on numeric size instead of characters;

-T CHAR: Specifies the delimiter;

-K #: The field used for sorting comparisons;

-R: Reverse order;

-F: Ignore character case

-U: Duplicate lines retain only one copy;

Complex line: continuous and identical;

Uniq: report or remove duplicate rows

Uniq [OPTION] ... [INPUT [OUTPUT]]

-C: Shows the number of repetitions per line;

-U: Displays only rows that have not been duplicated;

-D: Displays only the rows that have been repeated;

Diff:compare Files line by line

diff [OPTION] ... FILES

Diff/path/to/oldfile/path/to/newfile >/path/to/patch_file

-U: Using the unfied mechanism, which displays the context of the row to be modified, the default is 3 rows;

Patch: Patching Files

Patch [OPTIONS]-i/path/to/patch_file/path/to/oldfile

Patch/path/to/oldfile </path/to/patch_file

Exercise: Remove the IP address from the ifconfig eno16777736 command result;

Shell programming (eight) text viewing and processing tools