Bashscripts.org

Hi everyone,

I was wondering is there a one liner to print every 5th line of the standard
output of a command into a file?

I run a command ./coreInfo filename and I get

garbage
garbage
garbage
garbage
Info I care about
garbage
garbage
garbage
garbage
Info I care about
garbage
garbage
garbage
garbage
Info I care about

I know I could process it after being written to a file, but I was wondering if there is a way to directly do it as the command runs.

Ted

Try this

./coreInfo filename | sed -n '0~5p' > newfile

NOTE: this must be the GNU version of SED or it won't work
IE: Fails on solaris, works on Linux


My TEST:
[crouse@archie ~]$ cat TEMP | sed -n '0~5p'
Info I care about
Info I care about
Info I care about
[crouse@archie ~]$