Getting syntax error while running awk command

Shell Programming and Scripting
1

Hello Gurus,

I am firing the below command :

df -g | grep -v var| awk '{ (if $4 > 90% ) print "Filesystem", $NF,"over sized";}'

But I am getting the below error:-

syntax error The source line is 1.
 The error context is
                {if ($4 > >>>  90%) <<<
 awk: The statement cannot be correctly parsed.
 The source line is 1.

Please suggest.

Thanks-
Pokhraj

2 
df -g | grep -v var| awk '{ if ( $4 > "90%" ) print "Filesystem", $NF,"over sized";}'
3

Hello,

Could you please try theis following code and let me know if this helps.

 
$ df -g | grep -v "var" | awk '{sub(/\%/,"",$0)} {print$1" "$4}' | awk '{ if ( $2> "90" ) print $1 ,"over sized";}'
Filesystem over sized
/mnt over sized

Thanks,
R. Singh

4

Thanks Anbu23 for your help.
But the command throwing some extra lines as below:-

Filesystem on over sized
Filesystem /febsmt/orasoft_bck over sized
Filesystem /febsdb/orasoft over sized

Why this line is coming.. Any idea.

Thank-
Pokhraj

5 
df -g | grep -v var| awk ' NR>1 { if ( $4 > "90%" ) print "Filesystem", $NF,"over sized";}'
6

pkhraj_d,
check this out..

df -g | grep -v -e var -e Filesystem | sed 's/%/ /g'|awk '{ if ( $4 > 90 ) print "FILESYSTEM", $NF,"over sized";}'

Enjoy.

7 
df -g | grep -v var| awk '$4+0 > 90{print "Filesystem", $NF,"over sized"}'
8

No need for grep nor more than one pipe:

df -g| awk 'NR==1 || /var/ {next} {sub (/%/,"",$4); if ($4+0 > 90) print "Filesystem ", $NF, "oversized"}'

And, yes, pamu is right: no need for the sub and the if :

df -g | awk 'NR==1 || /var/ {next} $4+0 > 90 {print "Filesystem ", $NF, "oversized"}'
1 Like
9

RudiC ,
great code,

df -g | awk 'NR==1 || /var/ {next} $4+0 > 90 {print "Filesystem ", $NF, "oversized"}'

$4+0 what it means, if you could explain. How it is eliminating the "%"symboll which is in there.

Thank you,

10

awk , when converting a field to a number, interprets leading digits in a field as a number and stops at the first non-digit. Adding zero to a field forces number conversion, so here you go: awk takes the digits and stops at the %- sign: 90%+0 is becoming 90 and can be compared numerically.

1 Like