UNIX for Advanced & Expert Users

hi,

could any one tell me what is diff between

#ls

and

#xrgs ls

Well "ls" will do something while "xargs ls" will hang waiting for input. Suppose you wanted to do an ls on a file called data1 and another called data2. You could do "ls data1 data2". Or you could do "echo data1 data2 | xargs ls". xargs reads from stdin and runs the command using the input as arguments. "ls `echo data1 data2`" is almost the same thing. But xargs can read thousands of words and run as many separate ls commands as needed.