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Old 03-18-2009, 07:07 PM   #1
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sed doesn't work in the real files but on the screen

I need to add in lines in front of and in end of all the .html files in a folder.

I tried these codes, however, nothing happened in those html files when I opened them with Text editor. I could only see what I want to print out on the Terminal window.And I 'm sure I run the script in the right place.
Any suggestion?

for i in *.html; do
if [[ $j -lt 8 ]]; then

< ${i} sed -n '



Old 03-18-2009, 07:35 PM   #2
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man sed

Old 03-18-2009, 07:38 PM   #3
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Hi, sed is commonly used to transform information piped to other programs. It will not edit the file unless you specify the -i switch.
Old 03-18-2009, 07:44 PM   #4
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See the other replies about in-place editing, but if you want to be safe maybe it is worth changing your script to output to a new file. Then you can check it is doing the right thing before overwriting your original files. See modified line below:

< ${i} > ${i}_edited sed -n '


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