Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

How to insert and delete any line after desire line

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting How to insert and delete any line after desire line
# 1  
Old 10-19-2008
How to insert and delete any line after desire line
like i have file like

abc
123
pqr
bbbb
ttttttttt
t
tttt
------------------
i want to insert "class" after pqr and t lines
please suggest me.
# 2  
Old 10-19-2008
Try:

Code:
sed -e '/pqr/G' -e '/^t$/G' < filename | sed  's/^$/class/g'

# 3  
Old 10-19-2008
THANKS FOR REPLY
but it also insert row at last also, and please tell If I want to insert row after 2 rows of desire row
like:
i/p:
pqr
abcv
dddd
33333
--------------
o/p insert "best" after 2 rows of pqr
pqr
abcv
dddd
best
33333
----------------------
# 4  
Old 10-20-2008
pls try below sed command

Code:
sed -n '/pqr/ !{
p
}
/pqr/ {
p
n
p
n
p
i\
best
}' filename

below is the same with above ( insert line after match)
Code:
sed '/pqr/a\
------------------
/^t$/a\
------------------
' filename

below is the slightly different ( insert line before match line)
Code:
sed '/pqr/i\
------------------
/^t$/i\
------------------
' filename

Last edited by summer_cherry; 10-21-2008 at 02:23 AM..
# 5  
Old 10-20-2008
use SED i option.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Insert a line of text on nth line of a file

Hi All, I am using UNix Sun OS sun4u sparc SUNW,SPARC-Enterprise My intention is to insert a line of text after 13th line of every file inside a particular directory. While trying to do it for a single file , i am using sed sed '3 i this is the 4th line' filename sed: command garbled: 3... (5 Replies)
Discussion started by: gotamp
5 Replies

2. UNIX for Dummies Questions & Answers

How to get desire line?

Hi Guys, I am newbie here and greeting to all guys of unix forum, now I want to learn unix here. I have query here, we have file where file has 20 line record, now i want display 10 to 15 line row record only, then how it possible. (5 Replies)
Discussion started by: aaditya321
5 Replies

3. Shell Programming and Scripting

How to read a text file line by line and insert into a database table?

I have a test file that I want to read and insert only certain lines into the the table based on a filter. 1. Rread the log file 12 Hours back Getdate() -12 Hours 2. Extract the following information on for lines that say "DUMP is complete" A. Date B. Database Name C.... (2 Replies)
Discussion started by: JolietJake
2 Replies

4. UNIX for Advanced & Expert Users

How to find a string in a line in UNIX file and delete that line and previous 3 lines ?

Hi , i have a file with data as below.This is same file. But actual file contains to many rows. i want to search for a string "Field 039 00" and delete that line and previous 3 lines in that file.. Can some body suggested me how can i do using either sed or awk command ? Field 004... (7 Replies)
Discussion started by: vadlamudy
7 Replies

5. Shell Programming and Scripting

sed - How to insert line before the first blank line following a token

Hello. I have a config file (/etc/my_config_file) which may content : # # port for HTTP (descriptions, SOAP, media transfer) traffic port=8200 # network interfaces to serve, comma delimited network_interface=eth0 # set this to the directory you want scanned. # * if have multiple... (6 Replies)
Discussion started by: jcdole
6 Replies

6. Shell Programming and Scripting

sed command to grep multiple pattern present in single line and delete that line

here is what i want to achieve.. i have a file with below contents cat fileName blah blah blah . .DROP this REJECT that . --sport 7800 -j REJECT --reject-with icmp-port-unreachable --dport 7800 -j REJECT --reject-with icmp-port-unreachable . . . more blah blah blah --dport 3306... (14 Replies)
Discussion started by: vivek d r
14 Replies

7. Shell Programming and Scripting

Sort a line and Insert sorted word(s) in a line

Hello, I am looking to automate a task - which is updating an existing access control instruction of a server and making sure that the attributes defined in the instruction is in sorted order. The instructions will be of a specific syntax. For example lets assume below listed is one of an... (6 Replies)
Discussion started by: sanjayroc
6 Replies

8. Shell Programming and Scripting

Insert a new line before every 5th line in a file

Hi, I need to insert a new line containing the string "QUERY" above every 5 lines. The below piece of code inserts a new line after every 5th line awk '{print $0} !(NR%5) {print "QUERY"}' sed 'n;n;n;n;G;' --> I do not know how to give "QUERY" string here But I need to insert it before... (4 Replies)
Discussion started by: royalibrahim
4 Replies

9. Shell Programming and Scripting

Delete line with match and previous line quoting/escaping problem

Hi folks, I've list of LDAP records in this format: cat cmmac.export.tmp2 dn: deviceId=0a92746a54tbmd34b05758900131136a506,ou=devices,ou=customer,ou=nl,o=upc cmmac: 00:13:11:36:a5:06 dn: deviceId=0a92746a62pbms4662299650015961cfa23,ou=devices,ou=customer,ou=nl,o=upc cmmac:... (4 Replies)
Discussion started by: tomas.polak
4 Replies

10. UNIX for Advanced & Expert Users

Insert a line as the first line into a very huge file

Hello, I need to insert a line (like a header) as the first line of a very huge file (about 3 ml rows). I am able to do it with sed, but redirecting the output and creating a new file takes quite some time. I was wondering if there was a more efficient way of doing it? Any help would be... (3 Replies)
Discussion started by: shriek
3 Replies
Login or Register to Ask a Question