[Ilugc] Re: ilugc Digest, Vol 10, Issue 13

[Muthukumar]

> Please explain the use of "-a" there

Plz. when ever you start a thead then use appropriate subject to that.

To explain the usage of -a in test command,

/tmp/tst is a file
/tmp/tst.log is a file

Checking as,

# test -f /tmp/tst -a -f /tmp/tst.log
# echo $?
# 0

# test -f /tmp/nofile
# echo $?
# 1

-a is used to combine to test operationgs. -o is used for OR operation. -a is having more precedence than -o

HTH.

Thanks,
-Muthukumar.