sed in AIX script do not work with special chars [duplicate]

问题

I created a script that is generating HTML code. At the end of the script, I need to hightlight some words in a table by making them bold.

So I need to replace in the code, every instance of WORD by WORD or WORD

of course, WORD is stored in a variable $CODE to make this much more harder.

I tryed to used the sed command unfortunatelly with no success.

 sed -e 's/$CODE/<b>$CODE</b>/g' page.html > newpage.html

I tryed also with double quotes, with escape chars before the /, many combination of quotes and double quotes, with | as delimiter, always with no success. If any one of you could point me to a solution, I would be really greatfull.

PS : Tryed also with awk ... but with variable it's a real pain in the ...

EDIT : Here is my exact code to help all of you. code_list.txt contain a list of CODE-description lines.

 for y in code_list.txt
 do
      CODE=$(echo $y | cut -f1 -d-)
      awk -v code="$CODE" '{if(match($0,code)){gsub(code,"<b>"code"</b>")}} 1' $SCRIPTS/html/daily_running_jobs.html > $SCRIPTS/html/daily_running_jobs_highlight.html
      mv $SCRIPTS/html/daily_running_jobs_highlight.html $SCRIPTS/html/daily_running_jobs.html  
 done

B²

回答1:

There is no reason your idea would not work if

you use " instead of '
there is no @ (EDIT: and no linebreak) in the $CODE expression (replace / by @)

sed -e "s@$CODE@<b>$CODE</b>@g" page.html > newpage.html

The problem with your solution was the quoting, and that the sed regex separator / was also used in your replacement expression as in </b>

EDIT - multiple values to be replaced from file

If you have a file code_list.txt where all strings-to-be-replaced are in one-per-line, do

cp page.html  newpage.html
while read var
do
    mv newpage.html newpage1.html
    sed -e "s@$var@<b>$var</b>@g" newpage1.html > newpage.html
    # optionally rm newpage1.html
done < code_list.txt

回答2:

awk -vcode="$CODE" '{if(match($0,code)){gsub(code,"<b>"code"</b>")}} 1' page.html > newpage.html

assume there is a variable $CODE

We pass it to awk variable, if there is a match then replace

来源：https://stackoverflow.com/questions/37632171/sed-in-aix-script-do-not-work-with-special-chars

标签

unix

sed

aix