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
Using Shell Variables with sed to Replace Text or Data Use shell variables withsedto replace text or data dynamically. This is useful when you want to substitute values in a file based on variables, such as paths or strings defined in the shell. To pass shell variables intosed, reference t...
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. ...
之所以叫 AWK 是因为其取了三位创始人 Alfred Aho，Peter Weinberger, 和 Brian Kernighan 的 Family ...
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(...
[2addr]y/string1/string2/ Replace all occurrences of characters in string1 in the pattern space with the corresponding characters from string2. Any character other than a backslash or newline can be used instead of a slash to delimit the strings. Within string1 and string2, a backslash ...
This script looks for three lines, where the first line contains "one", the second contained "two" and the third contains "three", and if found, replace them with the string "1+2+3": #!/bin/sh sed ' /one/ { N /two/ { N /three/ { N s/one\ntwo\nthree/1+2+3/ } } ...
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 ...
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. ...