History

There are several ways to manipulate history in zsh. One way is to use csh-style ! history:

% /usr/local/bin/!:0 !-2*:s/foo/bar/ >>!$

If you don't want to use this, you can turn it off by typing setopt nobanghist.

Another way is to use the fc command. For example, if you type an erroneous command:

% for i in `cat /etc/clients` 
 do 
 rpu $i 
 done
zsh: command not found: rpu
zsh: command not found: rpu
zsh: command not found: rpu
...

typing fc will execute an editor on this command, allowing you to fix it. (The default editor is vi, by the way, not ed).

% fc
49
/rpu/s//rup/p
 rup $i 
w
49
q
for i in `cat /etc/clients` 
 do 
 rup $i 
 done
        beam    up  2 days, 10:17,    load average: 0.86, 0.80, 0.50
         bow    up  4 days,  8:41,    load average: 0.91, 0.80, 0.50
        burn    up          17:18,    load average: 0.91, 0.80, 0.50
       burst    up  9 days,  1:49,    load average: 0.95, 0.80, 0.50
         tan    up          11:14,    load average: 0.91, 0.80, 0.50
       bathe    up  3 days, 17:49,    load average: 1.84, 1.79, 1.50
        bird    up  1 day,   9:13,    load average: 1.95, 1.82, 1.51
      bonnet    up  2 days, 21:18,    load average: 0.93, 0.80, 0.50
...

A variant of the fc command is r, which redoes the last command, with optional changes:

% echo foo
foo
% r
echo foo
foo

% echo foo
foo
% r foo=bar
echo bar
bar