we have this line from postgresql.conf file

#BARMAN# archive_command = 'rsync -a %p barman@'

I remove the word - #BARMAN# by the following sec syntax

sed '/archive_command/ s/#BARMAN#//g'

but the word archive_command not in the beginning of the line

as the following:

    archive_command = 'rsync -a %p barman@'

while expected output should be

archive_command = 'rsync -a %p barman@'

how to fix that?

  • sed '/archive_command/ s/#BARMAN#[ ]*//g' ? – Archemar Sep 13 '17 at 14:28
  • sed -E 's/^#BARMAN#[[:blank:]]//g' – Raman Sailopal Sep 13 '17 at 14:31

Notice that you are only replacing #BARMAN#, and not the space(s) afterwards.

To do that, use

sed '/archive_command/s/#BARMAN# *//'

or, to allow for tabs as well as spaces:

sed '/archive_command/s/#BARMAN#[[:space:]]*//'

This will remove the string and any number of spaces or tabs directly afterwards.

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