Does HPUX 11.11 support "(command)" as the subshell?

[jh_yang]

It seems only `command` as the command substitution works, not (command). Any idea?

[Bill Hassell · Accepted solution]

The proper form is: $(command) as in:

ABC=$(date)

The use of grave accents characters such as `command` is deprecated.

[Laurent Menase]

for command substitution you must use $(command)
for subshell you can use (command)

for instance

( echo hello; sleep 1; echo bye) | cat
it is a subshell

a=$(ps)
echo $a
is command substitution.

[James R. Ferguson]

Hi:

I think you mean something like:

# LIST=$(cat ${MYFILE})

...or the archaic form using backticks:

# LIST=`cat ${MYFILE}`

...all of which can be made faster by doing:

# LIST=$(< ${MYFILE})

Regards!

...JRF...

[jh_yang]

Thanks. That's the answer I am looking for.