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Code Block
languagebash
sed -i.bak 's/coy/reindeer/' hey.txt
cmp -s hey.txt hey.pristinetxt.txtbak && echo "sed did not work, your files are identical."
sed did not work, your files are identical.

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Code Block
languagebash
sed -i.bak 's/coycow/reindeer/' hey.txt
cmp -s hey.txt hey.pristinetxt.txtbak && echo "sed did not work, your files are identical."

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