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I believe it opens the file only once, I ran:

[root@WATCHKICK ~]# strace sed -e 's/WEND/W_END/' -e 's/CLOSE/C_LOSE/' f.txt > strace_out.txt 2>&1And then grepped for the filename which only...

Maybe something like this, I am sure a much more elegant solution will appear.

[root@WATCHKICK ~]# cat f.txt
WEND
CLOSE
[root@WATCHKICK ~]# sed -e 's/WEND/W_END/' -e 's/CLOSE/C_LOSE/' f.txt ...

You could try something like:
sed -e 's/\(A......\)</\1*</' -e 's/\(A.....\)</\1*</' fileor
sed -e 's/\(A.\{5,6\}\)</\1*</' file
both of which (with the following text in file):
XCONFIGA1234<X...

OR

$ awk '!f && $0 ~ "<"tag".*>"{f=gsub(/-/," ")}f' tag='mytag' file

sed '/<mytagone>/s/-/ /g' file

Hello,

Following may help you in same.



awk 'NR==1 {gsub(/\-/," ")} 1' file_name



Output will be as follows.


<mytagone>hello 1 2 3 world</mytagone>
<mytagtwo>hello 1-2-3...