【Shell】Batch replace or delete content in files

Apr 23, 2017#Shell66

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This is a guide on how to use shell commands to batch replace or delete content in files. It provides examples of using the "find" command with "perl" and the "sed" command to perform these actions. It also includes instructions on how to delete characters from the beginning or end of a document, delete lines containing specific content, and replace specific content within matching lines.

Modify the same content in a large number of files

find -name \*.xml | xargs perl -pi -e 's|Original Content|Modified Content|g'

After using this method, there may be a problem of missing files, I don't understand why. I found the missing files one by one and pasted them back, and it prompted that the files were still in this folder, just invisible.

Modify a large amount of the same content in a document

sed -i "s/Original Content/Modified Content/g" train.txt

Delete the first few characters of a document

sed -i 's/^.....//g' file.txt Delete the first 5 characters of all lines, based on the number of dots.

sed -i 's/.....$//g' file.txt Delete the last 5 characters of all lines, based on the number of dots.

Delete lines that contain certain content

sed -i '/Content to Include/d' file.txt

Replace certain content in matching lines

sed -i '/Matching Content/s/Original Content/Modified Content/g' filename