Shulou(Shulou.com)06/02 Report--

In the operation of linux, we often replace and count the strings in the file. Now let's do a collation. If there are any mistakes, please correct them.

Count the number of strings

Grep-c str filenamegrep-o str filename | wc-l

Replacement string

Replace the current line matching string

: s/oldStr/newStr

Replace all matching strings in the current file

:% s / original string / replacement string / gg

Batch replacement string

Sed-I "s / lookup field / replacement field / g" grep lookup field-rl path

-rl represents all subdirectories

Sed-I "s/new Str/old Str/g" 'grep "old Str"-rl filename'

PS:Linux common operation commands for strings

Split a string with a space

Awk'{print $1}'

Split a string with specific characters

Str=$ {str//,/}-/ / is followed by a glyph that splits the string, and the last / is followed by a space

Cut string

Cut-b |-c |-f 3-b represents bytes,-c represents characters, and-f represents the number of characters in the array following the field.

Remove specific characters from a string

Sed's /\ "/ / g's stands for substitution, the default character is replaced with blank, the character after\ is the character to be replaced, and g means replace all.

Summary

The above is the relevant operation skills of finishing strings in Linux introduced by the editor. I hope it will be helpful to you. If you have any questions, please leave a message for me, and the editor will reply you in time. Thank you very much for your support to the website!

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