bash - Adding at the end of single line by matching using shell scripts -

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i have shell script test.sh , content whithin shell script i'm using exec command run java command

export t1= exec java  -xx:+useconcmarksweepgc -xx:+printclasshistogram  .. dosomething

now have modify argument dymanically add " -dfile.encoding=utf-8" in solaris, , i'm using sed command to

export t1 exec java  -xx:+useconcmarksweepgc -xx:+printclasshistogram  -dfile.encoding=utf-8 ... dosomething

i;m new sed commad , it's not working can have other alternatives

sed   -e "s/^\(exec \java.*\)$/\1 -dfile.encoding=utf-8/" test.sh > $test.sh.tmp

you can use sed:

sed -i.bak '/exec java/s/$/-dfile.encoding=utf-8/' test.sh  cat test.sh export t1= exec java  -xx:+useconcmarksweepgc -xx:+printclasshistogram -dfile.encoding=utf-8 .. dosomething

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