unix - Sed to replace first forward slash in line after match with a string -

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so have following in file:

/icon.png /my/path/tester/icon.png /logo.png /my/path/tester/logo.png

i want replace lines not contain 'tester' , add '/my/path/tester/' beginning... leaving:

/my/path/tester/icon.png /my/path/tester/icon.png /my/path/tester/logo.png /my/path/tester/logo.png

i prefer edit file in place using sed.

thanks in advance!

if have sed supports -i option (eg, gnu-sed):

sed -i '/tester/!s@^@/my/path/tester@' file

note ask for, not robust. want limit replacement lines not match '/tester/' rather 'tester', , there no point -i option (see sed edit file in place). using -i obfuscates temporary file, reason people not want , think avoid using -i.


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