10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I'm basically looking for the ksh equivalent of bash's PROMPT_COMMAND="history -r", where simply redrawing the command prompt in a terminal will cause ksh to reload the history file.
At the risk of sounding incredibly lazy (in which case I would be guilty as charged), I've noticed that if I have... (13 Replies)
Discussion started by: DevuanFan
13 Replies
2. Shell Programming and Scripting
Hi,
I remember in my previous project, I used UP arrow button to recall previous unix commands (using putty on Sun OS), which I am not able to do in my new project... I do not know if this is some project specific settings or not...
when I press UP arrow button, all I get is ^. I have to... (3 Replies)
Discussion started by: juzz4fun
3 Replies
3. Shell Programming and Scripting
I am using ksh, By doing change in .profile as
set -o vi
my updown and history does not work.
Also I can not edit command line on prompt using vi command.
My TERM is vt100.
What is wrong here ?
Thanks.
:cool: (3 Replies)
Discussion started by: ekb
3 Replies
4. UNIX for Dummies Questions & Answers
guys
can any one help me how to set top arrow to get the history of last used commands.I am using ksh (3 Replies)
Discussion started by: etldev
3 Replies
5. Shell Programming and Scripting
Hi,
What is the korn shell equivalent of bash shell's "history -c" command?
I do know, how to clear the history list in ksh, I can do the following:
> ~/.sh_historybut still, I am interested to know the single one line command as 'history -c' gives error on my ksh (1 Reply)
Discussion started by: royalibrahim
1 Replies
6. UNIX for Dummies Questions & Answers
Is it possible to use the keyboard UP ARROW in place of k to recall history? If so, how/what do I need to do change terminal emulation, etc.?
TIA,
George (7 Replies)
Discussion started by: gwfay
7 Replies
7. UNIX and Linux Applications
hi,
can anyone tell me how to enable arrow keys to scroll thru the commands on command prompt.
I am using C shell ( I know, in k shell, set -o vi would enable vi command history, but set -o doesnte exist in c shell) (4 Replies)
Discussion started by: hemangi13
4 Replies
8. Shell Programming and Scripting
Hi, I've been looking for a way to make the up arrow show the last command in csh, like how it does in bash/ksh. I've been googling and just can't find anything.....anybody have any ideas? thanks! (5 Replies)
Discussion started by: sayeo
5 Replies
9. UNIX for Advanced & Expert Users
i am not able to recall the command typed earlier in unix whenever i press esc key ^[ comes on the unix prompt . so esc k isnt working for me
whenever i press backspace key i get ^H on my unix cursor
need help (1 Reply)
Discussion started by: murli1200
1 Replies
10. News, Links, Events and Announcements
DARPA contestants make robotic history
http://news.com.com/Driverless+robots+reach+milestone+in+DARPA++race/2100-11394_3-5891793.html?tag=nl (3 Replies)
Discussion started by: Neo
3 Replies
shell_builtins(1) shell_builtins(1)
NAME
shell_builtins, case, for, foreach, function, if, repeat, select, switch, until, while - shell command interpreter built-in commands
The shell command interpreters csh(1), ksh(1), and sh(1) have special built-in commands. The commands case, for, foreach, function, if,
repeat, select, switch, until, and while are commands in the syntax recognized by the shells. They are described in the Commands section of
the manual pages of the respective shells. The remaining commands listed in the table below are built into the shells for reasons such as
efficiency or data sharing between command invocations. They are described on their respective manual pages.
|
Command | Shell
alias |csh, ksh
bg |csh, ksh, sh
break |csh, ksh, sh
case |csh, ksh, sh
cd |csh, ksh, sh
chdir |csh, sh
continue |csh, ksh, sh
dirs |csh
echo |csh, ksh, sh
eval |csh, ksh, sh
exec |csh, ksh, sh
exit |csh, ksh, sh
export |ksh, sh
false |ksh
fc |ksh
fg |csh, ksh, sh
for |ksh, sh
foreach |csh
function |ksh
getopts |ksh, sh
glob |csh
goto |csh
hash |ksh, sh
hashstat |csh
history |csh
if |csh, ksh, sh
jobs |csh, ksh, sh
kill |csh, ksh, sh
let |ksh
limit |csh
login |csh, ksh, sh
logout |csh, ksh, sh
nice |csh
newgrp |ksh, sh
nohup |csh
notify |csh
onintr |csh
popd |csh
print |ksh
pushd |csh
pwd |ksh, sh
read |ksh, sh
readonly |ksh, sh
rehash |csh
repeat |csh
return |ksh, sh
select |ksh
set |csh, ksh, sh
setenv |csh
shift |csh, ksh, sh
source |csh
stop |csh, ksh, sh
suspend |csh, ksh, sh
switch |csh
test |ksh, sh
time |csh
times |ksh, sh
trap |ksh, sh
true |ksh
type |ksh, sh
typeset |ksh
ulimit |ksh, sh
umask |csh, ksh, sh
unalias |csh, ksh
unhash |csh
unlimit |csh
unset |csh, ksh, sh
unsetenv |csh
until |ksh, sh
wait |csh, ksh, sh
whence |ksh
while |csh, ksh, sh
Bourne Shell, sh, Special Commands
Input/output redirection is now permitted for these commands. File descriptor 1 is the default output location. When Job Control is
enabled, additional Special Commands are added to the shell's environment.
In addition to these built-in reserved command words, sh also uses:
: No effect; the command does nothing. A zero exit code is returned.
.filename Read and execute commands from filename and return. The search path specified by PATH is used to find the directory con-
taining filename.
C shell, csh
Built-in commands are executed within the C shell. If a built-in command occurs as any component of a pipeline except the last, it is exe-
cuted in a subshell. In addition to these built-in reserved command words, csh also uses:
: Null command. This command is interpreted, but performs no action.
Korn Shell, ksh, Special Commands
Input/Output redirection is permitted. Unless otherwise indicated, the output is written on file descriptor 1 and the exit status, when
there is no syntax error, is zero.
Commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not
performed.
In addition to these built-in reserved command words, ksh also uses:
* : [ arg ... ] The command only expands parameters.
* .file [ arg ..Read the complete file then execute the commands. The commands are executed in the current shell environment. The search
path specified by PATH is used to find the directory containing file. If any arguments arg are given, they become the posi-
tional parameters. Otherwise, the positional parameters are unchanged. The exit status is the exit status of the last com-
mand executed. the loop termination test.
intro(1), alias(1), break(1), cd(1), chmod(1), csh(1), echo(1), exec(1), exit(1), find(1), getoptcvt(1), getopts(1), glob(1), hash(1), his-
tory(1), jobs(1), kill(1), ksh(1), let(1), limit(1), login(1), logout(1), newgrp(1), nice(1), nohup(1), print(1), pwd(1), read(1), read-
only(1), set(1), sh(1), shift(1), suspend(1), test(1B), time(1), times(1), trap(1), typeset(1), umask(1), wait(1), chdir(2), chmod(2),
creat(2), umask(2), getopt(3C), profile(4), environ(5)
29 Jun 2005 shell_builtins(1)