Redirecting output of pipe operator to a variable
I am using unix power tools to search for a content in a file and replace the content with sed command.
I am using the following command to achieve this grep user ora | awk -F@ ' { print $1 } ' | awk -F= ' { print $2 } ' | cut -c 2- | xargs sed 's/user3/user/' The contents of ora is as follows: cat ora user="user3@ghy" pass="ghy" Every time the username will be different in 'ora' file. Different in the sense that user will remain same , the numeric part will change. e.g user1 , user2 , user3 etc . Now I want that this username pattern will be replaced by fixed username namely 'user' . grep user ora | awk -F@ ' { print $1 } ' | awk -F= ' { print $2 } ' | cut -c 2- | sed 's/<pattern>/user/' I am using xargs command to achieve the result , but it is not working grep user ora | awk -F@ ' { print $1 } ' | awk -F= ' { print $2 } ' | cut -c 2- | xargs sed -i 's//user/' sed: can't read user3: No such file or directory How to read this <pattern> dynamically. |
Code:
cat t.t Alternate Code:
for usr in user1 user2 user3; do sed -i s/$usr/user/ t.t; done |
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