Shell Scripting: read input from command output

Question

Why does the following code gives only first line from ps -eaf output in ps.out?

while read line; 
do
   echo $line>ps.out; 
done < <(/bin/ps -eaf)

cnicutar · Accepted Answer · 2014-03-07 20:12:56Z

2

You are truncating the file each time so you only get the last line. You probably want >> instead of >.

answered Mar 7, 2014 at 20:12

cnicutar

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1 Comment

apologies for the dumb mistake. should have been >> Thx!

Bruce K · Accepted Answer · 2014-03-07 20:15:41Z

1

Or redirect the entire loop output by putting ">ps.out" after the "done".

answered Mar 7, 2014 at 20:15

Bruce K

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