02-14-2008
Quote:
Originally Posted by
dsravan
can i increase the size of the history file. only 10 latest commands are being stored. If everybody has there own history file then how come i am able to see what others are typing?
The size of the history file is not in lines but in characters.
Lets assume your average command is about 25 characters then a HISTSIZE of 250 would more or less store 10 commands.
In case you make the change in the .profile as mentioned before, the name of the history file you are using is related to the "tty" you are working on.
Since everybody has a different "tty" the commands of each person are stored in a different file and you cant see the commands of others.
However, when you log off, your "tty" is released. The next person who logs on could get the same "tty" assigned as you were using before. If this is the case then only that person will be able to see your command history.
Unless ofcourse you make sure your private history file is deleted when you log off.
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STTY(1) General Commands Manual STTY(1)
NAME
stty - set terminal options
SYNOPSIS
stty [ option ... ]
DESCRIPTION
Stty sets certain I/O options on the current output terminal. With no argument, it reports the current settings of the options. The
option strings are selected from the following set:
even allow even parity
-even disallow even parity
odd allow odd parity
-odd disallow odd parity
raw raw mode input (no erase, kill, interrupt, quit, EOT; parity bit passed back)
-raw negate raw mode
cooked same as `-raw'
cbreak make each character available to read(2) as received; no erase and kill
-cbreak make characters available to read only when newline is received
-nl allow carriage return for new-line, and output CR-LF for carriage return or new-line
nl accept only new-line to end lines
echo echo back every character typed
-echo do not echo characters
lcase map upper case to lower case
-lcase do not map case
-tabs replace tabs by spaces when printing
tabs preserve tabs
ek reset erase and kill characters back to normal # and @
erase c set erase character to c. C can be of the form `^X' which is interpreted as a `control X'.
kill c set kill character to c. `^X' works here also.
cr0 cr1 cr2 cr3
select style of delay for carriage return (see ioctl(2))
nl0 nl1 nl2 nl3
select style of delay for linefeed
tab0 tab1 tab2 tab3
select style of delay for tab
ff0 ff1 select style of delay for form feed
bs0 bs1 select style of delay for backspace
tty33 set all modes suitable for the Teletype Corporation Model 33 terminal.
tty37 set all modes suitable for the Teletype Corporation Model 37 terminal.
vt05 set all modes suitable for Digital Equipment Corp. VT05 terminal
tn300 set all modes suitable for a General Electric TermiNet 300
ti700 set all modes suitable for Texas Instruments 700 series terminal
tek set all modes suitable for Tektronix 4014 terminal
hup hang up dataphone on last close.
-hup do not hang up dataphone on last close.
0 hang up phone line immediately
50 75 110 134 150 200 300 600 1200 1800 2400 4800 9600 exta extb
Set terminal baud rate to the number given, if possible. (These are the speeds supported by the DH-11 interface).
SEE ALSO
ioctl(2), tabs(1)
STTY(1)