10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Can you explain what this line of script is doing.
What I have understood is :
-- variable C is the name of a software which is either not installed, so it must be installed or allready installed and then should be update if newer version found
-- branch B="$B $C" is to install the software
--... (4 Replies)
Discussion started by: jcdole
4 Replies
2. Shell Programming and Scripting
#!/usr/bin/ksh
var1="Hi World"
var2="Morning"
var3=$(echo "$var1" \n "$var2")
echo $var3
var3=$(printf "$var1 \n $var2")
echo $var3
Output
Any way to get
in my $var3 ? (7 Replies)
Discussion started by: dahlia84
7 Replies
3. Shell Programming and Scripting
In csh I am using >&. What is the equivalent in ksh??
>& - redirect stdout and stderr (csh,tcsh) (18 Replies)
Discussion started by: kristinu
18 Replies
4. Shell Programming and Scripting
Dear All,
Please advice about this issue.
when i run this line in a script if && || && || && if i enter $x = test3 and $y = test1 the If condition apply while it should not
Best Regards (2 Replies)
Discussion started by: islam.said
2 Replies
5. Shell Programming and Scripting
I am using a Linux machine and it's default shell is BASH . I have korn shell script and inside it's setting environment variables. But after execuitng the script those env values are not holding the values . If I run the script outside of that ksh script with source a.sh , it's able to hold to... (2 Replies)
Discussion started by: talashil
2 Replies
6. UNIX for Dummies Questions & Answers
I'm a user on a fairly locked down sys V server. By default, I have ksh set as my default shell. I added to my .profile:
bash -o vi
so when I login, it goes into bash so I can take advantage of tab completion and use the up key to bring up previous commands. However, whenever I want to exit, I... (2 Replies)
Discussion started by: mrwatkin
2 Replies
7. Shell Programming and Scripting
hi
i was trying to optimize one script and i came across this problem .. i am putting some pseudo code here
$ >cat a.sh
ls | while read I
do
i=$(($i + 1))
done
echo "total no of files : "
$ >ksh a.sh
total no of files :
$ >bash a.sh
total no of files :
why is... (1 Reply)
Discussion started by: zedex
1 Replies
8. UNIX for Advanced & Expert Users
Hello,
I have lib file which contain a function that get text to print on screen by echo command.
Several scripts are inculde this lib and use this function.
Each one of them is written in different shell language (sh ksh & bash).
This causing some issues when using backslash charater as... (4 Replies)
Discussion started by: Alalush
4 Replies
9. Shell Programming and Scripting
Hi,
I use AIX (ksh) and Linux (bash) servers. I'm trying to do scripts to will run in both ksh and bash, and most of the time it works. But this time I don't get it in bash (I'm more familar in ksh).
The goal of my script if to read a "config file" (like "ini" file), and make various report.... (2 Replies)
Discussion started by: estienne
2 Replies
10. Shell Programming and Scripting
Hi -
I m prashant. I m new in UNIX&LINUX world. I want to ask that how can we define the shell in Linux like bash,ksh,csh in Linux. What is the use of these shells. I know there are mny experts on net if you can tell me then please do me this favour and tell me about this topic.
... (1 Reply)
Discussion started by: prashantsingh
1 Replies
RBASH(1) General Commands Manual RBASH(1)
NAME
rbash - restricted bash, see bash(1)
RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is
used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow-
ing are disallowed or not performed:
o changing directories with cd
o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV
o specifying command names containing /
o specifying a filename containing a / as an argument to the . builtin command
o specifying a filename containing a slash as an argument to the -p option to the hash builtin command
o importing function definitions from the shell environment at startup
o parsing the value of SHELLOPTS from the shell environment at startup
o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators
o using the exec builtin command to replace the shell with another command
o adding or deleting builtin commands with the -f and -d options to the enable builtin command
o using the enable builtin command to enable disabled shell builtins
o specifying the -p option to the command builtin command
o turning off restricted mode with set +r or set +o restricted.
These restrictions are enforced after any startup files are read.
When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.
SEE ALSO
bash(1)
GNU Bash-4.0 2004 Apr 20 RBASH(1)