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I have a file with the below content. I want to replace chrome with chromeBackup but not in all places.

Name=chrome
XXXXXXXXXXX
Run=bin -app "chrome/chrome.sh"
XXXXXXXXXXX
Vol.apps/chrome=chrome
XXXXXXXXXXX

Required output:

Name=chrome
XXXXXXXXXXX
Run=bin -app "chromeBackup/chromeBackup.sh"
XXXXXXXXXXX
Vol.apps/chromeBackup=chromeBackup
XXXXXXXXXXX
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6
  • 1
    Can you describe the places that should and should not be replaced? Commented Mar 14, 2019 at 17:24
  • Check my "required output" Commented Mar 14, 2019 at 17:27
  • A good answer would operate on any input; otherwise, someone could just statically print your desired output. Commented Mar 14, 2019 at 17:38
  • 2
    In other words, one possible answer right now would be two tell you to open an editor and make the changes manually. Commented Mar 14, 2019 at 17:39
  • 1
    Your required output doesn't really clarify your desired behavior. Do you want the change only on lines that start with Run= or Vol.apps? Every line except ones that start with Name=? Only lines that contain a "p"? Something else? Commented Mar 14, 2019 at 19:34

2 Answers 2

Reset to default
7

According to the information you have provided, you want to replace it at two places, so you can use:

sed -e /^Run/s/chrome/chromeBackup/g -e /^Vol/s/chrome/chromeBackup/g file_name

Edit

As @Kusalananda mentioned in his comment, shorter version is:

sed -E '/^(Run|Vol)/s/chrome/&Backup/g' file_name
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1
  • 4
    Or possibly sed -E '/^(Run|Vol)/s/chrome/&Backup/g'. Commented Mar 14, 2019 at 18:35
1

More general perhaps, change all instances except those on the line starting Name=

from="chrome"; to="${from}Backup"; sed "/^Name/! s/$from/$to/g" fileToChange

or just skip the first line

from="chrome"; to="${from}Backup"; sed "2,$ s/$from/$to/g" fileToChange

or only in the lines starting Run or Vol

from="chrome"; to="${from}Backup"; sed -E "/^Run|^Vol/ s/$from/$to/g" fileToChange
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