Sed Append Text Before After Sample

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In this page, I will show you some examples about Linux sed command which append some text (before/after) matching text.

Assumption & Background

  1. Your OS is CentOS 6.5

Append Text Before Matching Text


# The following sed command will paste "Some More Text is appended" after matching text "Please Put it here"
sed -i'' -r -e "/Please Put it here/i\Some More Text is appended/" your_file.txt 

Append Text After Matching Text


# The following sed command will paste "Some More Text is appended" after matching text "Please Put it here"
sed -i'' -r -e "/Please Put it here/a\Some More Text is appended/" your_file.txt 

  • Those who are interested in basic sed, click this

link



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