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# 1  
Old 02-03-2016
Insert line
My file looks like this. When I see dn:, i'd like to insert a line above that. Sorry, i have no idea how to insert a line above so i won't be able to put in a code tage. Thank you so much for your time and assistance on this request.

Code:
dn: OU=Groups,O=lwsnrmdata,O=lwsn,DC=cinemark,DC=com
objectClass: top
objectClass: organizationalUnit
ou: Groups
dn: CN=test1,OU=Groups,O=lwsnrmdata,O=lwsn,DC=cinemark,DC=com
objectClass: top
objectClass: zzlwsnobjlwsnRMGroup
objectClass: lwsnrmbootRMTopStruct
cn: test1
name: test1
zzlwsnattrDescription: test1
dn: CN=test2,OU=Groups,O=lwsnrmdata,O=lwsn,DC=cinemark,DC=com
objectClass: top
objectClass: zzlwsnobjlwsnRMGroup
objectClass: lwsnrmbootRMTopStruct
cn: test2
name: test2
zzlwsnattrDescription: test2
dn: CN=test3,OU=Groups,O=lwsnrmdata,O=lwsn,DC=cinemark,DC=com
objectClass: top
objectClass: zzlwsnobjlwsnRMGroup
objectClass: lwsnrmbootRMTopStruct
cn: test3
name: test3
zzlwsnattrDescription: test3

Last edited by Scrutinizer; 02-04-2016 at 01:47 AM.. Reason: Code tags
# 2  
Old 02-03-2016
Please use code tags as required by forum rules!

Actually, without those, your request is close to unreadable. Are you lookíng for dn:, or just dn:? For the latter, try
Code:
sed 's/dn:/\n&/' file

dn: OU=Groups,O=lwsnrmdata,O=lwsn,DC=cinemark,DC=com
objectClass: top
objectClass: organizationalUnit
ou: Groups

dn: CN=test1,OU=Groups,O=lwsnrmdata,O=lwsn,DC=cinemark,DC=com
objectClass: top
.
.
.

This User Gave Thanks to RudiC For This Post:
loktamann
# 3  
Old 02-03-2016
That's exact what I wanted sir. Thank you so much. I will not forget to use code tag from now on. Again, thank you.
# 4  
Old 02-03-2016
Note that a Unix sed needs two lines
Code:
sed '/dn:/i\
' file

I recommend this also for GNU sed.
Reason:
Code:
sed '/dn:/i\
newtext' file

is straight forward.
The GNU sed variant is
Code:
sed '/dn:/i\newtext' file

but
Code:
sed '/dn:/i\\' file

i.e. an additional \ if there is no text Smilie
# 5  
Old 02-03-2016
A Perl possibility:

Code:
perl -pe '/^dn:/ and print "\n"' loktamann.ldap

Code:

dn: OU=Groups,O=lwsnrmdata,O=lwsn,DC=cinemark,DC=com
objectClass: top
objectClass: organizationalUnit
ou: Groups

dn: CN=test1,OU=Groups,O=lwsnrmdata,O=lwsn,DC=cinemark,DC=com
objectClass: top
objectClass: zzlwsnobjlwsnRMGroup
objectClass: lwsnrmbootRMTopStruct
cn: test1
name: test1
zzlwsnattrDescription: test1

dn: CN=test2,OU=Groups,O=lwsnrmdata,O=lwsn,DC=cinemark,DC=com
objectClass: top
objectClass: zzlwsnobjlwsnRMGroup
objectClass: lwsnrmbootRMTopStruct
cn: test2
name: test2
zzlwsnattrDescription: test2

dn: CN=test3,OU=Groups,O=lwsnrmdata,O=lwsn,DC=cinemark,DC=com
objectClass: top
objectClass: zzlwsnobjlwsnRMGroup
objectClass: lwsnrmbootRMTopStruct
cn: test3
name: test3
zzlwsnattrDescription: test3

# 6  
Old 02-04-2016
Code:
awk '/^dn:/{print x}1' file

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