On 11/6/2012 9:59 AM, Hossein Lanjanian wrote: > Hi every body > for run a software on centos, I must use tcsh shell. > but when I run the command: > [root at localhost ~]# tcsh > the following message appears: > Bad : modifier in $ (/). > > please help! Did you try Google? http://lmgtfy.com/?q=Bad+%3A+modifier+in+%24+(%2F). Looking at the first few results, it looks like the problem is probably a syntax error in one of your startup files where it is trying to set an environment variable. This could be in .cshrc, .tcshrc, .login, or a few others (see the tcsh man page) for a list of files read on startup. -- Bowie