bash - sed command to replace part of file -

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this question has answer here:

hi want replace part of /etc/sysconfig/file consists:

options='--para'  cert_path=/etc/cert

i want replace options='--para' options='--para --para2 172.0.0.0/16'

so tried:

sudo sed -i 's/"options='--para'"/"`options='--para --para2 172.0.0.0/16'"/' /etc/sysconfig/file

but error:

edit /etc/sysconfig/file sed: -e expression #1, char 88: unknown option `s'

can me correct sed-command

try this:

sudo sed -i "s#options='--para'#options='--para --para2 172.0.0.0/16'#" /etc/sysconfig/file

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