07-30-2005
repeating previous argument on command line?
Hi, is there a way in bash--or any other shell--to repeat the preceding argument on the command line? E.g., let's say I want to rename the file "/var/www/conf/httpd.conf" to "/var/www/conf/httpd.conf.bak". I want to be able to type mv /var/www/conf/httpd.conf, and then press a command key that would repeat the preceding argument, so I get mv /var/www/conf/httpd.conf /var/www/conf/httpd.conf, and then I can simply tack on ".bak" on the final argument so generated.
thanks,
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
how to parse the command line argument to look for '@' sign and the following with '.'.
In my shell script one of the argument passed is email address. I want to parse this email address to look for correct format.
rmjoe123@hotmail.com has '@' sign and followed by a '.'
to be more... (1 Reply)
Discussion started by: rmjoe
1 Replies
2. Shell Programming and Scripting
Say I want to get the value of last command line argument using the value in $# (or some other way if u can suggest) how do I do it??
$"$#"
`$"$#"`
These don't work :( (4 Replies)
Discussion started by: amit_oddey21
4 Replies
3. Shell Programming and Scripting
Hi ,
I have a piece of code ...wherein I need to assign the following ...
1) A command line argument to a variable
e.g origCount=ARGV
2) A unix command to a variable
e.g result=`wc -l testFile.txt`
in my awk shell script
When I do this :
print "origCount" origCount --> I get the... (0 Replies)
Discussion started by: sweta_doshi
0 Replies
4. Programming
Hi,
I have a very simple C program which will run in UNIX. When i am passing * as the command line argument, i am gettig the below output.
Program:
#include <stdio.h>
#include "mylibrary.h"
int **environ;
int main(int argc,char *argv)
{
int i;
printf("\nHello... (2 Replies)
Discussion started by: dsudipta
2 Replies
5. Shell Programming and Scripting
Hi Guys
When I run the below command
ssh -o 'PasswordAuthentication yes' -o 'PreferredAuthentications publickey' -i $HOME/.ssh/id_dsa Server_Name
I found the below error
ommand-line line 0: Missing yes/no argument
Kindly help me to sort out
Double post, continued... (0 Replies)
Discussion started by: Pratik4891
0 Replies
6. Shell Programming and Scripting
how do i check if a command line argument is -g?
for example,
if command line argument equals "-g"
{
print "Goodbye \n";
}
else
{
print "Welcome to the program! \n";
} (1 Reply)
Discussion started by: bshell_1214
1 Replies
7. Shell Programming and Scripting
I would like to use a string as a command line argument...is this possible using TCSH? For example say my script is called TEST and I would like to pass a string into my script stating why the test failed.
EXAMPLE:
TEST "Failed due to missing statement" (4 Replies)
Discussion started by: thibodc
4 Replies
8. Shell Programming and Scripting
I'm trying to write a bash script called YN that looks like the following
YN "Specify a question" "doThis" "doThat"
where "doThis" will be executed if the answer is "y", otherwise "doThat".
For example
YN "Do you want to list the file dog?" "ls -al dog" ""
Here's my attempt... (3 Replies)
Discussion started by: LeoKSimon
3 Replies
9. UNIX for Beginners Questions & Answers
Hi Guys, I'm trying to work out how to add a command line argument inside single quotes. Would anyone be able to help please as I'm going mad :)
I want to be able to place the filename on command line and it then be used in a script but it needs to have quotes surrounding it.
Thanks in... (4 Replies)
Discussion started by: mutley2202
4 Replies
10. Shell Programming and Scripting
I would like to add the ability to change the message that is displayed when timer is finished. At present it just asks for the time I want for the alarm.
I think what I need is another command line argument.
soundfile="/usr/share/sounds/My_Sounds/Alarm-sound-buzzer.mp3"... (5 Replies)
Discussion started by: drew77
5 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)