Shell Programming and Scripting

Could some let me know the command used to view the commands that I have entered 2 days ago. I am able to perform a command fc -l but its yielding me only last 10 recent events. I need to know the history of the commands that i have entered 2 days ago. Is there anyway that I can get the information that I am requesting for ?

Thanks

What you have available to see via fc or shell built-in "history" command depends on the HISTSIZE variable. If HISTSIZE is set to 100, the history will only have the last 100 commands that you have executed. Depending on how many commands you execute per day, your history might not take you back very far.

Echo the value of HISTSIZE to see the number that the shell is keeping for you, and add the +nnn option (where nnn is a number) to see more than 10 commands. For example:

Code:

fc -l +300

should show the last 300 lines

Thanks for such a prompt response.
How can i view the HISTSIZE. When I am trying to hit the cmd
$echo HISTSIZE - displays nothing.

And fc -l +300 displays the following
ksh: +300: not found

HISTSIZE is a shell variable, so this command is needed (you were close):

Code:

echo $HISTSIZE

The message from Kshell is odd. What version are you running? (run the command echo ${.sh.version} to find out. It should give you something like Version JM 93u 2011-02-08 and if it doesn't (or gives you an error) you have a pretty old version of Kshell installed.

In recent versions of Kshell, fc is an alias for hist which is a built-in command. The Kshell doc doesn't mention support for +n, however it is working for me in all of the versions I have installed, the oldest is from 2009.

My gut feeling on this is that your Kshell is old and the in built command doesn't support +n.

Code:

echo $HISTSIZE

--ahamed

---------- Post updated at 08:04 AM ---------- Previous update was at 08:02 AM ----------

Check vi ~/.profile or vi ~/.bashrc depending on your shell

--ahamed

You might try this:

Code:

cat -v $HISTFILE|sed 's/\^.//g'

Which should list all of the commands in the hist file stripping away any non-printable characters that Kshell adds.


It also occurred to me that your history might be deleted each time you log in, or might be placed into a different file for each login session that you have. Might make finding the right file, if it still exists, a bit of a challenge.