The bash shell provides lots of extensions above and beyond what the POSIX standards require. The ash shell doesn't provide nearly as many extensions. If you use the standard as your shell programming guide, you should get by OK. A straight translation (getting rid of bash extensions) for your script would be:
If your system allows alphanumeric characters other than characters in the Portable Filename Character Set in user names, you might want:
Alright, I am stuck here.
I have this variable that stores the word = HELLO and I have converted it it to -----
I have asked user to input one character at a time. SAy, if they enter E.
Therefore, I need to search 2nd character and input E there.
makes it -E--- (other checkings have been... (2 Replies)
Hi,
For my bash script, terminal with bash is generate an OK output and program works right.
already,
terminal with ash have "line 48: syntax error: Bad substitution" output and program don't work.
:confused: (0 Replies)
Guys
I now have a script that's working in a BASH environment, however one line doesn't appear to be working on an embedded device that has a busybox therefore ASH shell. I've googled but there's very little I can find regarding the ASH shell.
In BASH the following line works...
if ] ;... (6 Replies)
I am trying to debug something using gdbserver, after the successful/YET REALLY SLOW debug session i see that the ash shell on the the target under debug is messed up.
Probably because gdbserver tries to open the core file which is binary. How do i recover from it?
Also any ideas to speed up... (2 Replies)
Hi All,
I have a script that I wrote on a bash shell, I use it to sort files from a directory into various other directories. I have an variable set, which is an array of strings, I then check each file against the array and if it is in there the script sorts it into the correct folder.
But... (5 Replies)
I wrote Bash script and now I want to convert it to Ash. One headache is this function:
do_adduser() {
setaddprompt
_arr_add=("Add manually" "Add via TXT" "return to main menu" "exit program")
select add_action in "${_arr_add}"
do
case "$REPLY" in
1)... (7 Replies)
hello everybody,
i'm a beginner in ash and i want to convert this bash script to ash.
this script send a xml file to a nagios server :
#!/bin/bash
PROGNAME=$(basename $0)
RELEASE="Revision 0.3"
print_release() {
echo "$RELEASE"
}
print_usage() {
echo ""
echo "$PROGNAME... (6 Replies)
Hi,
I am new in bash scripting. In my work, I provide support to several users and when I connect to their computers I use the same admin and password, so I am trying to create a script that will only ask me for the IP address and then connect to the computer without having me to type the user... (5 Replies)
hi,
i would like to create a bash script that check which port in my Linux server are closed (not in use) from a specific range, port range (3000-3010).
the print output need to be only 1 port, and it will be nice if the output will be saved as a variable or in same file.
my code is:
... (2 Replies)
Discussion started by: yossi
2 Replies
LEARN ABOUT DEBIAN
rbash
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 file name 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)