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Top Forums Shell Programming and Scripting Cat'ing a multiple line file to one line Post 302114511 by djsal on Monday 16th of April 2007 05:48:09 PM
Old 04-16-2007
Cat'ing a multiple line file to one line

I am writing a script that is running a loop on one file to obtain records from another file.

Using egrep, I am finding matching records in file b, then outputing feilds of both into another file.

****************************
filea=this.txt
fileb=that.txt

cat $filea | while read line
do
egrep ^${line} > tmp.$$
COUNT=`wc -l tmp.$$`
if [ -s tmp.$$ ]
then
echo "${line}`cat tmp.$$`" >> output.txt
fi
done
******************************
In the instance that tmp.$$ is 2 or more lines, how do I get all the lines on the same line? I know by looking at the example above, there are better ways to do it, however, I have to output different things based on the number of results in $COUNT. Thanks in advance!
 

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setmaillist(1)						      General Commands Manual						    setmaillist(1)

NAME
setmaillist - create a binary mailing list SYNOPSIS
setmaillist bin tmp DESCRIPTION
setmaillist reads a mailing list from its standard input. setmaillist writes the mailing list in a binary format to tmp; it then moves tmp to bin. tmp and bin must be on the same filesystem. If there is a problem creating tmp, setmaillist complains and leaves bin alone. The binary mailing list format is portable across machines. setmaillist always creates bin world-readable. MAILING LIST FORMAT
The mailing list read by setmaillist is a series of lines. NUL bytes are not allowed. If a line begins with a dot or slash, setmaillist takes the entire line as an include file name. If a line begins with an ampersand, setmaillist takes the rest of the line as a recipient address. If a line begins with a letter or num- ber, setmaillist takes the entire line as a recipient address. Each recipient address must include a fully qualified domain name. Recipi- ent addresses longer than 800 bytes are not allowed. setmaillist ignores blank lines and lines beginning with #. It also ignores spaces and tabs at the ends of lines. For example, god@heaven.af.mil djb@silverton.berkeley.edu is a mailing list with two addresses. SEE ALSO
setforward(1), newinclude(1), printmaillist(1) setmaillist(1)
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