Quote from: r1s2g3 on June 04, 2018, 02:09:50 AM

Quote from: mi2018 on June 03, 2018, 09:08:31 PM

what is this #!/bin/bash, I could not understand it, through cpp,

This is shell script, Shell has many version and first line of code "#!/bin/ is to tell to which type of shell is used to execute that script.
The most famous shell are korn shell (ksh) and bash shell (shell). Although unix scripts can execute in all shells but some commands (very small list) are very specific to that shell type so we need to give shell type in accordance.

Otherwise "#" is used to comment in unix (if it is not first line in script and it is first character of that line).

thank you very much that was helpfull