Pipe in command string

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1

Hi,

Can't you have a pipe in a command string ?

If I try the following I get errors.

Why ?

> cmd="ls -lrt | grep xyz"
> $cmd

|: No such file or directory
grep: No such file or directory
xyx: No such file or directory

Thanks in advance
Hench

2

Use eval:

eval $cmd

Regards

3

Hi Franklin,

If we make an alias to the same command, it works fine.
alias cmd="ls -al | wc -l"
cmd

Does it mean that alias internally using eval?

4

Could be, but I'm not sure of that, they are both builtin shell commands.

Regards