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Thank you Scott.That is so clear.Thanks for the link too.:)

Hello.
This appears so naive but can someone explain me the use of ^ and $ in SED with a small example.
Read lots of docs But am still not clear

I am new to shell scripting.
Can someone explain me what this piece of code do..
/usr/bin/nohup /opt/perf/bin/glance -aos filename2.syntax -iterations 1 > filename.log