"Sibuyas Bombay" wrote:
>anyway, how does a ` differ from a ' anyway ? ... and what are they call
>ed
For full details look at the manpage for bash on quoting; for a
friendlier approach, look at the Debian Tutorial at www.debian.org.
Very briefly: ' is called single quote, ` is called backquote
bash has special characters, such as `, |, &, $ and so on. If they are
enclosed in '', they cease to be special and become literal characters.
Anything enclosed in backquotes is treated as a command to run. The
output of that command is substitued for the backquotes and everything
between them.
Like this:
bash-2.01$ cat /var/run/named.pid
287
bash-2.01$ ps p `cat /var/run/named.pid`
PID TTY STAT TIME COMMAND
287 ? S 0:02 /usr/sbin/named
bash-2.01$ ps p '`cat /var/run/named.pid`'
unrecognized option or trailing garbage
usage: ps acehjlnrsSuvwx{t<tty>|#|O[-]u[-]U..} \
--sort:[-]key1,[-]key2,...
--help gives you this message
--version prints version information
bash-2.01$
--
Oliver Elphick [EMAIL PROTECTED]
Isle of Wight http://www.lfix.co.uk/oliver
PGP key from public servers; key ID 32B8FAA1
========================================
"Go ye therefore, and teach all nations, baptizing them
in the name of the Father, and of the Son, and of the
Holy Ghost; Teaching them to observe all things
whatsoever I have commanded you; and, lo, I am with
you alway, even unto the end of the world. Amen."
Matthew 28:19,20
