06-13-2018
Config files can be read and used by different kinds programs, not just bash. That config file would fail miserably as a bash script based just on the use of spaces.
It seems to me it means translate (or substitute) the string that is stored in the dir variable - kind of like dereferencing if you will. The author probably figured that $ prepend would improve reading clarity for us UNIX types. Maybe not.
8 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I am looking for an alternative. I am not wanting to try and run it using one of those fancy programs that can run windows programs. I am trying to cut the chord from MS so I am looking for good similar programs.
Any thoughts?
If there are none, then I guess I try to run it under Linux. ... (6 Replies)
Discussion started by: wizkid
6 Replies
2. Shell Programming and Scripting
I'd like to make a script that I can execute every time I sign on to my linux box that keeps track of the time and allows to me to add a remark to a file. So basically once I log in, I run the script, and it outputs the date and time to a text file (log.txt). But that isn't my problem.
I need... (1 Reply)
Discussion started by: Glider
1 Replies
3. UNIX for Advanced & Expert Users
Hi gurus,
I'd like to know your opions about Single Sign On (SSO) for linux (Debian). In my company, clients want to access to different services (FTP, HTTP, Mail, Web Applications ). I think about OpenLDAP and Proxy (Squid, Vulture) to resolve this problem but i'm not sure if they can. Are there... (0 Replies)
Discussion started by: thanhdat
0 Replies
4. UNIX for Dummies Questions & Answers
Does anyone have this handy
Thanks (0 Replies)
Discussion started by: 77yrold
0 Replies
5. UNIX for Dummies Questions & Answers
Hi guys ,
I want to develop a web page which is capable of executing the command on os and show the output on the browser.(Which involves reading and writing too.)
I m using jsp language to develop the web page. How would i use it to communicate with my linux server?
Any... (3 Replies)
Discussion started by: pinga123
3 Replies
6. Shell Programming and Scripting
Hi,,
Let example cmd: $$config/all
Here I want to replace or subsitute blank space and also with any other character in place of "$" sign...and also want to replace backslash (/) with forward (\)......in expect script
please could any one help on this.....thank you (2 Replies)
Discussion started by: swethakast
2 Replies
7. Linux
Please help me, wasted hrs:wall:, to find this soulution:-
I need a command that will work on file (xml) and replace multiple occurrence (more than 2 times)
Examples
1. '==='
2. '===='
3. '======='
should be replaced by just '=='
Note :- single character should be replaced. (=... (13 Replies)
Discussion started by: RedRocks!!
13 Replies
8. UNIX for Advanced & Expert Users
I am trying to get a dollar sign variable to be expanded in single quotes. Not sure what I am doing wrong. I have tried every way I can think of.
for i in `cat file1`
do
for j in `cat file2`
do
ssh $i 'systemctl is-enabled "${j}" ';
done
done... (4 Replies)
Discussion started by: cokedude
4 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 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)