history: Badly formed number

Shell Programming and Scripting
1

% history clean
history: Badly formed number. :frowning:

% echo $0
/usr/local/bin/tcsh

% uname
SunOS

% grep -e "hist" .tcshrc.user
set history=90
set savehist=80

Please suggest what could be the problem here. Thanks in advance.

2

The history command does not take arguments like "clean"

you can try

history 7

for example... but it is expecting a number....

hence the usage message.

Have a look at the man page for more info, and have a ply with the options..:

man history

HTH