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Shell Programming and Scripting

text processing ( sed/awk)

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# 8  
Old 02-29-2008
Quote:
Originally Posted by anchal_khare
very thanks for evy1 soln....
'll use any of thm...

1 request .. can any1 chk the vino's soln.. why its nor working...
logic seems to be current,,, but i cunt find out the error...

thanks again..

anchal.
sed will output the changes to stdout. It will not make the changes permanent to the file unless you tell it to.

If you sed supports the -i flag use
Code:
sed -i -e "s/.\{400\}/&\n/g" file.txt

If not
Code:
sed -e "s/.\{400\}/&\n/g" file.txt >out.txt

out.txt will contain the desired output.
# 9  
Old 02-29-2008
hi vino...
yes i knw what u told....

the output ( stdout ) is unchanaged...
have u tested ur command.. ?
# 10  
Old 02-29-2008
Quote:
Originally Posted by anchal_khare
hi vino...
yes i knw what u told....

the output ( stdout ) is unchanaged...
have u tested ur command.. ?
Code:
[/tmp]$ cat t
abcdefghijklmopqrstuvwxyz
[/tmp]$ sed -e "s/.\{4\}/&\n/g" t
abcd
efgh
ijkl
mopq
rstu
vwxy
z
[/tmp]$

Try
Code:
sed -e "s/.\{4\}/&\\n/g" t

# 11  
Old 02-29-2008
wondered... !!!
the same goes here with unchanged o/p.

-bash-2.05b$ cat 400.txt
abcdefghijklmopqrstuvwxyz

-bash-2.05b$ sed -e "s/.\{4\}/&\n/g" 400.txt
abcdnefghnijklnmopqnrstunvwxynz


also tried double escaped.. :-)

what cud be the reasonn..??

now i tried on linux..

it working...
what cud be the prob with HP-UX?
# 12  
Old 02-29-2008
deleted.
reason : duplicate post.
# 13  
Old 02-29-2008
version inconsistincies with handling newlines in RH side of substitution...

It does work for anything other than \n in Solaris sed also:

Code:
#  sed -e "s/.\{4\}/&%/g" infile
abcd%efgh%ijkl%mopq%rstu%vwxy%z

So...a workaround:
Code:
#  sed -e "s/.\{4\}/&%/g" infile | tr "%" "\n"
abcd
efgh
ijkl
mopq
rstu
vwxy
z
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