Tips for organizing strings in Linux

In Linux operations, we often replace and count strings in files. Let's do a summary now. If there are any mistakes, please criticize and correct them.

Count the number of strings

grep -c str filename
grep -o str filename |wc -l

Replace String

Replace the current line with the matching string

:s/oldStr/newStr

Replace all matches in the current file

:%s/original string/replacement string/gg

Batch replace string

sed -i "s/search field/replace field/g" grep search field-rl path

-rl means all subdirectories

sed -i "s/new Str/old Str/g" 'grep "old Str" -rl filename'

PS: Linux commonly used string operation commands

Split string by space

awk '{print $1}'

Split a string at specific characters

str=${str//,/ } ——————–//后面是分割字符串的標志符號，最后一個/后面還有一個空格

Cutting a string

cut -b|-c|-f 3 ———————–b代表字節，-c代表字符，-f代表域后面的數組是第幾個字符

Remove specific characters from a string

sed 's/\”//g' s代表替換，默認字符被替換為空，\后面的字符是要被替換的字符，g表示全部替換

Summarize

The above is the relevant operation skills for organizing strings in Linux introduced by the editor. I hope it will be helpful to everyone. If you have any questions, please leave me a message and the editor will reply to you in time. I would also like to thank everyone for their support of the 123WORDPRESS.COM website!