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Full Discussion: How to sum values from top
Top Forums Shell Programming and Scripting How to sum values from top Post 302361477 by qdf on Tuesday 13th of October 2009 09:49:54 AM
Old 10-13-2009
Code:
echo `top -b -n 1| grep Cpu| cut  -c35-39` + 1| bc -l| read tvar
echo $tvar

gives error message illegal character |

Code:
echo $( top -b -n 1| grep Cpu| cut  -c35-39 ) + 1| bc -l| read tvar
echo $tvar

works without error, but gives no output
 

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LEARN ABOUT MINIX

zgrep

ZGREP(1)                                                      General Commands Manual                                                     ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep  options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

                                                                                                                                          ZGREP(1)
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