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r_tanaka
r_tanaka

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(WIP) sed personal reference

#sed

dry run

Without any option, running sed doesn't update files. So, normal mode is dry run mode.

dry run with diff 

sed 's/hoge/fuga/g' sample.txt | diff sample.txt -
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dry run with beauty diff

sed 's/hoge/fuga/g' sample.txt | diff --color -u sample.txt -
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update file

-i(--in-place)

sed -i 's/hoge/fuga/g' sample.txt
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update with backup 

sed -i.bak 's/hoge/fuga/g' sample.txt
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use multiple orders 

sed -e 's/hoge/fuga/g' -e 's/xxxx/aaaa/g' sample.txt
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