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Full Discussion: Help with variables for filesystems allocated
Top Forums Shell Programming and Scripting Help with variables for filesystems allocated Post 302332582 by vbe on Thursday 9th of July 2009 01:46:47 PM
Old 07-09-2009
My understanding of the appointed task (but then I may be wrong - I speak french ordinarily... and so forgive my spelling and curious syntax...) was :
Count how many filesystems are on the host and how much free space is left ( per filesystem or globally?)
It could be display as the script does and add an extra line where you cumulate the columns to give a total...
set -x tells the shell to work in debug mode, and so each line will be shown with the command executed and if successfull.
Your code line:
Code:
df -m | grep -v ":"|grep -v Free|grep -v "/proc"| while read FSYSTEM BLKS FREE USED IUSED PERIUSED MOUNTEDON

tells you what its reading, so you can use it to do your title e.g
Code:
echo " FSYSTEM                BLKS     FREE     USED   IUSED   PERIUSED    MOUNTEDON"

but needs formatting...
just add that echo before the df line...

---------- Post updated at 19:46 ---------- Previous update was at 19:42 ----------

Here is the result of your command using set -x
Code:
+ read FSYSTEM BLKS FREE USED IUSED PERIUSED MOUNTEDON
+ + hostname
HOST=gon04
+ ((  INUSE = 25755648 - 25693308  ))
+ echo gon04 /data/ofa/export 25755648 25693308 InUse= 62340
gon04 /data/ofa/export 25755648 25693308 InUse= 62340

 

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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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