DEV Community

r_tanaka
r_tanaka

Posted on

(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 -
Enter fullscreen mode Exit fullscreen mode

dry run with beauty diff

sed 's/hoge/fuga/g' sample.txt | diff --color -u sample.txt -
Enter fullscreen mode Exit fullscreen mode

update file

-i(--in-place)

sed -i 's/hoge/fuga/g' sample.txt
Enter fullscreen mode Exit fullscreen mode

update with backup 

sed -i.bak 's/hoge/fuga/g' sample.txt
Enter fullscreen mode Exit fullscreen mode

use multiple orders 

sed -e 's/hoge/fuga/g' -e 's/xxxx/aaaa/g' sample.txt
Enter fullscreen mode Exit fullscreen mode

Top comments (0)

Read next

thevediwho profile image

SplitView in iOS 18 - #30DaysOfSwift

Vaibhav Dwivedi -

mahamadjon000 profile image

Arrays

Mahamadjon000 -

ryudswift profile image

Starting this off right?

ryudswift -

i_am_vesh profile image

Shell Scripting in DevOps: A Complete Guide

Avesh -