Your counter example is good, I tried. It worked in bash. ksh, public ksh called as pdksh is the best shell.
Your socket example however is not very useful. Better to use perl or python or lua for sockets. Thanks. -Girish On Mon, Oct 22, 2012 at 9:15 PM, ashwin <[email protected]> wrote: > Girish Venkatachalam <girishvenkatachalam@...> writes: > >> >> We cannot do sockets programming with shell script since sockets >> require a networking >> library and shells do not have any libraries. But we can obviously >> invoke netcat and >> socat or any other software using shell scripts but we cannot do low >> level socket >> operations with shell scripts. Low level operations like closing >> sockets, accepting a socket, >> reading and writing a certain number of bytes etc. can't be done. > > We can do socket programming in bash but yes we cannot do fine grained control > like C in bash. This article says a way to do socket programming in bash > http://thesmithfam.org/blog/2006/05/23/bash-socket-programming-with-devtcp-2/ > >> >> In fact even higher level scripting languages do not permit much control. >> >> But shell scripts are very powerful for many common applications like >> say simple counters. >> >> In OpenBSD I use jot. In Linux you use something like rs or seq. >> >> $ cat s.sh >> for s in `jot 100 1 100` >> do >> print $s >> done >> >> This will print a sequence of numbers from 1 to 100. One each line. >> > > I am not familiar with jot. But if it is just printing 1 to 100 in one line > each > , you could do it the bash way , like > $ cat i.sh > for i in {1..100} > do > echo $i > done > > --ashwin > > _______________________________________________ > ILUGC Mailing List: > http://www.ae.iitm.ac.in/mailman/listinfo/ilugc -- Gayatri Hitech http://gayatri-hitech.com _______________________________________________ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
