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sed help please

 
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# 8  
Old 06-06-2005
I have still a problem. When i tried to overwrite the file

Code:
sed '1,20s/^\([^ ]*\)\(.*\)/\1 \1\@it.teithe.gr\2/p' telx2 > telx2

the file after it doesn't contain anything. Can you explain me why?
# 9  
Old 06-06-2005
Quote:
Originally Posted by sickboy
I have still a problem. When i tried to overwrite the file

Code:
sed '1,20s/^\([^ ]*\)\(.*\)/\1 \1\@it.teithe.gr\2/p' telx2 > telx2

the file after it doesn't contain anything. Can you explain me why?
Because you can't do that with sed, unless you have a version which supports -i. then you can do
Code:
sed -i '1,20s/^\([^ ]*\)\(.*\)/\1 \1\@it.teithe.gr\2/p' telx2

# 10  
Old 06-06-2005
Quote:
Originally Posted by sickboy
I have still a problem. When i tried to overwrite the file

Code:
sed '1,20s/^\([^ ]*\)\(.*\)/\1 \1\@it.teithe.gr\2/p' telx2 > telx2

the file after it doesn't contain anything. Can you explain me why?
'cause you cannot overwrite the input file with the redirection like that.

try:
Code:
/bin/echo '1,20s/^\([^ ]*\)\(.*\)/\1 \1\@it.teithe.gr\2/\nwq!' | ex -s  telx2

# 11  
Old 06-07-2005
Thanks again but I still have problems.
I want to change all the lines that the number begins with 694 to 727. For example

from
SGIWEB SGIWEB@it.teithe.gr 6945-415263
to
SGIWEB SGIWEB@it.teithe.gr 7275-415263

I tried this based on your previous answers but I didn't manage it.
Code:
sed 's/^\([^ ]*\)\([^ ]*\)\(694\)\(.-[0-9]\{6\}\)/\1 \2 \727\4/p' newfile2 > leeds

# 12  
Old 06-07-2005
sed -n '1,20s/^\([^ ][^ ]*\)[ ]*694\(.*\)$/\1 \1@it.teithe.gr 727\2/p' newfile2 > leeds
# 13  
Old 06-07-2005
Quote:
Originally Posted by vgersh99
sed -n '1,20s/^\([^ ][^ ]*\)[ ]*694\(.*\)$/\1 \1@it.teithe.gr 727\2/p' newfile2 > leeds
Unfortunately it's not working
# 14  
Old 06-07-2005
Quote:
Originally Posted by sickboy
Unfortunately it's not working
Unfortunately you cannot expect full-blown solutions anywhere.
Given your sample input the posted 'sed' does what you described under SUN/Solaris.

Do you wnt to modify the ORIGINAL solution to the ORIGINAL file
OR
Do you want another sed to post-process the output of the ORIGINAL sed?
Code:
echo 'SGIWEB SGIWEB@it.teithe.gr 6945-415263' | sed -n 's/^\([^ ][^ ]*[ ]*[^ ][^ ]*[ ]*\)694\(.*\)/\1727\2/p'

Do you understand the posted sed?
Can you apply/modified the posted sed to your particular data sample?
Last edited by vgersh99; 06-07-2005 at 09:30 AM..
 
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