fail a unix script

er_zeeshan05 · #1 (**permalink**) 10-27-2008

i am basically DWH professional.
I want to write a script such that whenver the file size is greather than 0 the script fails

danmero · #2 (**permalink**) 10-27-2008

man test

Code:

test -s file && exit

What DWH stand for

reborg · #3 (**permalink**) 10-27-2008

data warehouse.

See also ETL - Extract Transform Load.

er_zeeshan05 · #4 (**permalink**) 10-27-2008

hi
so above script will fail when file has size greater than 0 or it will search for existance of file

joeyg · #5 (**permalink**) 10-28-2008

file11 will be empty, file12 will be non-blank

Code:

> touch file11
> echo "hello" >file12
> ls -l file11 file12
-rw-rw---- 1 xxx dp 0 Oct 28 05:41 file11
-rw-rw---- 1 xxx dp 6 Oct 28 05:42 file12

> if [ -s file11 ]; then echo "fail here, file bytes more than 0"; fi 

> if [ -s file12 ]; then echo "fail here, file bytes more than 0"; fi 
fail here, file bytes more than 0

>

er_zeeshan05 · #6 (**permalink**) 10-28-2008

i dont think this reply helps nothing personal
i want the unix script to fail
i dont know know much i think unix has code like success code fail ode
i want fail code to come when file has record
any one god ideasa

Ikon · #7 (**permalink**) 10-28-2008

Code:

file=somefile
if [ ! -s $file ]
 then
  exit 1
 fi

will give exit code of 1 if file is greater than 0 bytes.

EDIT: Had to add the !

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