possible to change st in the source code of html via SSH?

[doncamillo]

I wonder if it is possible a mass changing in the source codes of all htm or php files via unix command from SSH.

For example in the home directory, search a html code such as (charset="ISO-8859-1")
 in soruces of all html files (*.html) and change it  (charset="ISO-1245-1")

[ghostdog74]

Code: [Select]

sed -i "s/ISO-8859-1/ISO-1245-1/g" *html


[doncamillo]

1. First of all, incase of a mistake, how can i list the files that will be changed with sed command. I mean firstly i want to see(list) the files which have the "ISO-8859-1" in their source codes. like find command.


2. what if i want to change a long code which already includes "/" charcater in it. Will it be a problem?

For example

Code: [Select]

<link rel="stylesheet" type="text/css" href="http://www.computerhope.com/forum/Themes/classic/style.css?fin11" />
replace with

Code: [Select]

<link rel="stylesheet" type="text/css" href="http://www.test.com/test/test/test.css?fin22" />
3. if i want to erase whole code can i add a space?
Such as

Code: [Select]

sed -i "s/ISO-8859-1/ /g" *html


[KenJackson]

1. First of all, incase of a mistake, how can i list the files that will be changed with sed command. I mean firstly i want to see(list) the files which have the "ISO-8859-1" in their source codes. like find command.

You can simply use grep to see which files have that text in them.

Alternately, you can replace the -i switch in the suggested command with -i.bak to create a backup file.  Then use diff to compare the original and backup file, if wanted, and delete the backup file when you're confident.

2. what if i want to change a long code which already includes "/" charcater in it. Will it be a problem?

The sed 's' command can use almost any character instead of '/'.  This incomplete example will do part of what you want:

Code: [Select]

sed -i.bak "s,computerhope.com/forum/,test.com/test/," *html

3. if i want to erase whole code can i add a space?
Such as

Code: [Select]

sed -i "s/ISO-8859-1/ /g" *html


Yes, that will work.  You don't even need a space -- just put two slashes together.

Note that it's often helpful to experiment with sed on the command line:

Code: [Select]

echo "abcde" | sed 's,bcd,,'