*** It's surely the backticks. When the shell sees backticks, it runs
the command that's inside the backticks, and
substitutes the OUTPUT of the command.
So for example if I say "echo ls", I get "ls". If OTOH I say "echo
`ls` ( with backticks ),
I get a list of files.
Even more interesting - if I say "cat `ls`", I get the content of all
the files.
In general - single quotes mean - get me everthing inside the single
quotes VERBATIM - don't interpret special chars.
- double quotes mean - get me everything inside the quotes,
but do interpret special chars and do variable substitution
- backquotes means = run the program inside the backquotes
and get me its output
- Jerry Kaidor
On 06/01/2016 13:44, Sarah Alawami wrote:
Ok, I'm doing a test run on a script but I can't figure out why this
is happening. I pt the name of the archive between ` marks including
time and date format I wanted. I got the following output.
pictures: command not found
It then lists the files that I guess are being uploaded so now I'm a
bit confused.
Here is the script.
#!/bin/sh
/usr/local/bin/tarsnap -c \
-v -f `pictures and music `date +%D-%M-%Y_%H-%M`` \
/users/sa/music /users/sa/movies /users/sa/pictures
# End of the script...
Do I have the right idea here? It looks like it half way works but it
is not naming the archive what I want to name it. Once I get this set
up I'll never need to worry again, I hope lol!
Everyone be blessed and have a happy wednesday.
