在Linux系统中,sed命令是一个非常强大和常用的文本处理工具。它可以帮助用户在文本文件中进行搜索、替换和编辑操作,是shell脚本编程中经常用到的工具之一。然而,随着Linux系统的发展和更新,替代sed命令的工具也逐渐增多,其中最为流行的替代工具之一就是红帽(Red Hat)公司推出的工具。 红帽公司是开源软件领域的领军企业之...
sed -E 's_([a-zA-Z0-9_]+) \1_\1_ig' f1 Search and replace for pattern, write just the lines with the replacements in a new file sed 's_foo_bar_w replaced.txt' file.txt Multiple replacements sed -e 's_foo_bar_' -e 's_hello_HELLO_' file.txt Multiple replacements by using...
mands. The input is then written to the standard output. A single command may be specified as the first argument to sed. Multiple commands may be specified by using the -e or -f options. All commands are applied to the input in the order they are specified regardless of their origin. ...
replace(1) reset(1B) resize(1) resolve_stack_dump(1) resolveip(1) return(1) ri(1) rksh(1) rksh88(1) rlogin(1) rm(1) rm(1g) rmail(1) rmdel(1) rmdir(1) rmdir(1g) rmformat(1) rmmount(1) rmumount(1) roffbib(1) roles(1) rpcclient(1) rpcgen(1) rping(1) rpm2cpio(...
awk 是一个强大的文本处理工具，常用于数据提取和处理。它按行操作，允许用户指定匹配的模式，并对匹配...
Replaces the contents of the hold space with the contents of the pattern space. (2)H Appends the contents of the pattern space to the hold space. (1)i\ Text Writes the Text variable to standard output before reading the next line into the pattern space. ...
- 【重要】Apply multiple find-replace expressions to a file: sed -e 's/find/replace/' -e 's/find/replace/' filename - 【重要】Replace separator `/` by any other character not used in the find or replace patterns, e.g. `#`: ...
The g option appended to the substitution statement sets a “global” mode that forces sed to replace multiple instances of the match on the same line. Changing File Extensions with Sed It’s possible to use sed to modify streams of text in shell scripts. Consider the following bash function...
Replace all occurrences of characters instring1in the pattern space with the corresponding characters fromstring2. Any character other than a backslash or newline can be used instead of a slash to delimit the strings. Withinstring1andstring2, a backslash followed by any character other than a ...
# and replace the "=" with a single space sed -e :a -e '$!N;s/\n=/ /;ta' -e 'P;D' # add commas to numeric strings, changing "1234567" to "1,234,567" gsed ':a;s/\B[0-9]\{3\}\>/,&/;ta' # GNU sed