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Full Discussion: Need assistance with sed
Top Forums UNIX for Advanced & Expert Users Need assistance with sed Post 302513572 by ygemici on Wednesday 13th of April 2011 03:37:26 PM
Old 04-13-2011
Quote:
Originally Posted by Dendany83
Sorry but this command is giving me an error:

Code:
#sed -e :a -e '$! s/$/\\n/;' -e 'N;s/\n//g' -e 'ta' header

Code:
Unrecognized command: $! s/$/\\n/;

i think you run in solaris or aix or other Unix variants.
if we suppose your system as solaris or other , sed has some limits unfortunately and does not understand what is newline in its..Smilie
if we coold run successfully this, results are useless again.because do not make sense for SED in some systems which i mentioned above.
Code:
#sed -e :a -e '$! s/$/\\n/;' -e 'N;s/\n//g' -e 'ta' header

if you try this in spite of everything for learning this command's output you can try like this (is same but no error Smilie )
Code:
# sed -e ':a' -e 'N;$!ba' -e 's/\n/\\n/g' header

However we must a find a solution for Sed Lovers Smilie

I use test four lines in text (as your header) file..

Code:
# cat text
       Device          |            IPMB0-A              |             IPMB0-B
Board      Address      |Sent      SentErr      %Errr      |Sent      SentErr      %Errr
Board1111      Address      |Sent      SentErr      %Errr      |Sent      SentErr      %Errr
Board1212121      Address      |Sent      SentErr      %Errr      |Sent      SentErr      %Errr

Code:
# cat infile
begin this is
this is ...................
that is.................
begin this is

I use the file named text that has contents to add in our infile
main code is below..if you want you can use for as in script file.
Code:
xdel=() ; xdel=($(sed -n '/^begin/=' infile))
y=0 ; x=() ; while IFS='\n' read -r line; do x=("${x[@]}" "$line"); ((y++)) ; done <text
cp infile infileorg ; loop=notok;loopinc=notok;wh=1;for i in ${xdel[@]} ; do for j in "${x[@]}" ;do if [ $wh = 1 ] ; then c=c ; else c=a ; fi ; 
if (( $wh > 2 )) ; then ((i++)); fi;if [ $loop = ok ] && [ $loopinc != ok ] ; then (( i = i + y - 1 )) ;loopinc=ok; fi ; sed ''$i' '$c'\
>'"$j"' ' infile>infiletmp ;mv infiletmp infile;((wh++)); done ; wh=1 ;loop=ok ; done; 
echo -e "\n===== Org File(infileorg) =====\n\n$(cat infileorg)\n\n ===== Output File(infile) =====\n\n$(cat infile)\n"

===== Org File(infileorg) =====

begin this is
this is ...................
that is.................
begin this is

 ===== Output File(infile) =====

       Device          |            IPMB0-A              |             IPMB0-B
Board      Address      |Sent      SentErr      %Errr      |Sent      SentErr      %Errr
Board1111      Address      |Sent      SentErr      %Errr      |Sent      SentErr      %Errr
Board1212121      Address      |Sent      SentErr      %Errr      |Sent      SentErr      %Errr
this is ...................
that is.................
       Device          |            IPMB0-A              |             IPMB0-B
Board      Address      |Sent      SentErr      %Errr      |Sent      SentErr      %Errr
Board1111      Address      |Sent      SentErr      %Errr      |Sent      SentErr      %Errr
Board1212121      Address      |Sent      SentErr      %Errr      |Sent      SentErr      %Errr

regards
ygemici
 

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