Ubuntu :: Bash Shell Implements Version Of The Command?

Mar 19, 2011

I'm used to being able to put a script in ~/bin and having it overrule the system version of a command. However for "time" or "kill" since the bash shell implements a version of the command (i.e. /bin/ version is not used) doing this is not enough. How can I get the shell to run my own version instead of the version in the shell.I understand the implications of doing this. I know what I'm doing, I can always /bin/whatever if I want to get the old version (or just chmod -x ~/bin/whatever).

View 6 Replies

General :: Clear Screen Command For BASH Shell

Jan 21, 2010

I am unable to use clear or cls command on bash shell. I have recently installed Cygwin and am using that for practicing unix commands.

I see that I can use Ctrl + L to clear the screen. I created an alias in my .bashrc to do the same as
alias cls='^L'

This is how i defined other aliases e.g.

And they work. Hence I assume cls will work too but this is what I get when I try to give cls on command prompt. Am i missing something? Is there a way to do this?

Then someone suggested, You cannot alias keystrokes to commands or vice versa. You could just alias cls to an echo command: echo -en "x0c"

And I added the following to .bashrc,

Sourced the .bashrc file. No errors but cls still does not clear the screen. Infact when I typed the echo -en "x0c on command prompt as well, nothing happened. What does this command do?

View 3 Replies View Related

Fedora Installation :: Bash Shell Could Not Find Kfontview Command

Apr 5, 2009

Bash shell could not find "kfontview" command, although kdebase-4.2.1-2.fc10.i386 already installed?

View 2 Replies View Related

General :: Referance To The Bash Shell / Use The Test Command To Evaluate?

Nov 8, 2010

Cis 140 student.how to use the test command to evaluate whether the shell variable I create contains a referance to the bash shell? and use the echo command to determine the result.

View 1 Replies View Related

General :: Cd Command Not Working In .cshrc File (bash Shell SUSE)?

May 29, 2011

Just trying to execute cd command in a .cshrc file (bash shell in SUSE Linux) it says."No such file or directory".Do you see any reasons for this

View 3 Replies View Related

General :: SSH Command Mode - Flow Of Execution Returns To Bash Shell

Aug 13, 2009

I want to use ssh to execute a command and to wait endlessly to log everything (in file) that comes as a stream of the connected server. But unfortunately, in the manual its written "If command is specified, it is executed on the remote host instead of a login shell"

So what happens is that when I specify my command:
ssh user@server "my_command"

It executed the command and the flow of execution returns to bash shell. So basically my session ends right after the command is executed. This happens only in case I specify command in the command line. If I login into ssh manually and then type "my_command", then the session doesn't end. I want the ssh not to exit, because after "my_command" executes, I want to capture everything in the session.

View 3 Replies View Related

Programming :: Creating Array From Command Output (Bash Shell Script)

Jan 26, 2011

I have a command that outputs n lines of text, and I want to place each line into an array element, but I can't seem to get the syntax correct

So my command is this:
cat $configfile | sed -n '/cluster:'$clustername'/,/cluster/ p' | awk /host/

Which produces many lines depending on the value of $clustername. I'd like to get each line as elements of an array.

View 5 Replies View Related

Programming :: Global Bash Shell Functions - A.sh: Line 2: Echotm: Command Not Found

Sep 13, 2010

I wonder if there is anyway to make a user-defined bash shell function global, meaning the function can be use in any bash shell scripts, interactively or not. This is what I attempted:

Code:

$ tail -n 3 /etc/bashrc
echotm () {
echo "[`date`] $@"
}

[code]....

View 11 Replies View Related

Programming :: Perl About System Command / Fails If The Standard Shell Is Dash And Not Bash?

Jun 30, 2011

I am trying to fix a perl script, and I really suck at perl. But I think this problem will be easy for people who know it.

The problem is, I have an old setup script someone wrote many years ago. It fails if the standard shell is dash and not bash. The only way I've gotten it to work is to point /bin/sh to bash. I looked thru the script and it uses "system" many places, and I think that's the problem.

I searched for it and found this link:url

My plan is to include this function:

Code:
sub system_bash {
my @args = ( "bash", "-c", shift );
system(@args);
}
Then I could simply change all calls to system into system_bash and it should work?

The parameter to the system calls is usually some variable. What if the parameter is a list already? Do I need to test for it somehow, and if it's a list, prepend "bash" and "-c" to the list? How do I do that?

In the script there are lots of places like this:

my $error = system($cmd);
if ($error) {
die/warn "some error message";
}

Shouldn't there be a return in the system_bash function?

View 8 Replies View Related

Programming :: Bash Shell Read User Argument From Command Line And Test It

Aug 29, 2010

Trying to create a small script that will read user's input, test if user entered some input and if not display some message or display a text using user's input.

The script is the following but i get an error saying "[: 6: =: argument expected"

View 12 Replies View Related

General :: Command To Check The Java Version: Java -versionand Got :bash :java: Command Not Found?

Jul 26, 2010

I've just installed java (jre-6u21-linux-i586.bin) on Red Hat 4.4 AS and issued this command to check the java version: java -versionand got :bash :java: command not found

View 4 Replies View Related

Programming :: Bash Shell Scripting / Using The Sort Command To Sort The Top 5 CPU Processes?

Feb 28, 2010

What options should I use when I'm using the sort command to sort the top 5 CPU processes (ps -eo user,pid,ppid,%cpu,%mem,fname | sort ??? | head -5) showing max to min usage?

View 2 Replies View Related

Fedora :: Stuck With Bash Shell / Changing Default Shell To Tcsh?

Mar 14, 2010

I want to change my default shell to tcsh. I used

Code:
usermod -s /bin/tcsh username
command as given at url

But if I open a new shell, it is still a bash shell.

How do I make my default shell as tcsh?

View 6 Replies View Related

Programming :: Bash-shell-like Less Functionality In The Python Shell?

Jun 25, 2010

Is there some type of functional way to read things in the Python shell interpreter similar to less or more in the bash (and other) command line shells?

Example:

Code:

>>> import subprocess
>>> help(subprocess)
...
[pages of stuff to read]
...

I'm hoping so as I hate scrolling and love how less works with simple keystrokes for page-up/page-down/searching etc.

View 4 Replies View Related

General :: Write Ns Code That Implements LEACH In A Network

Apr 25, 2010

I try to write a code that allows ns to simulate the operation of the leach protocol in a network but I can not find documentation that would allow me to do that. how should be the configuration of nodes and the base.

View 1 Replies View Related

Ubuntu :: Terminal Bash / -bash: Ls: Command Not Found

Jun 5, 2011

I got a problem with terminal, since i'm really a noob with terminal i don't know how to fix it.Everytime i type in a command it shows for example:

-bash: ls: command not found

Even the basic commands don't work... just cd <directory> and those things works

View 9 Replies View Related

General :: Write A Literal Bash Command In A Bash File?

Nov 29, 2010

I create a bash script that writes another bash file. But in the generated bash file I want to write a bash command in the file and not executing it.Here's my bash file:

Code:
#!/bin/bash
cat > ~/generateGridmix2data.sh << END

[code]...

View 6 Replies View Related

Ubuntu :: Lpr Command- And Man -t (bash Command - Print Both Sides Of The Paper Using A Printer?

Mar 29, 2010

I just recently learned about the wonderful little lpr command- and using man -t (bash command) to beautifully print man pages for reference- but is there a way to print both sides of the paper using a printer so equipped?

View 2 Replies View Related

Programming :: Show The Output Of Shell Command Into A Textbox, Ex Ps -efc Command?

Oct 20, 2010

I am using gtk to program GUI. How can I show the output of shell command into a textbox, ex ps -efc command ?

View 3 Replies View Related

Ubuntu :: Does It Use Bash Or Some Other Shell

Sep 16, 2010

Does it use Bash or some other shell?

View 2 Replies View Related

Ubuntu :: BASH: Execute Next Command Until Another Command Succeed?

Mar 19, 2010

I have a big bash script ,its goal is to download movie one by one . But I often get into a problem: if this script is executed in cron,it often does not completely download the movie.I often find the movies it downloaded are several KB while the movie is actually 20MB.So I think it is because it did not wait for finishing one task ,and jump to download another.So I want to know ,is there a way to force the bash script to wait until one movie downloaded completely and then start to download another movie ?

View 8 Replies View Related

General :: Bash Command History Update Before Execution Of Command

Jun 7, 2010

Bash's command history is great, especially it is useful when adding the history -a command to the COMMAND_PROMPT.However, I'm wondering if there is a way to log the commands to a file as soon as the Return key is pressed, e.g. before starting the command and not on completion of the command (using the COMMAND_PROMPT option would save the command once the prompt is there again).

I read about auditing programs like snoopy and session recorder like script but I thought they're already too complex for the simple question I have. I guess that deactivating that script logs all the output of the command would lead already in the right direction but isn't there a quicker way to solve that probelm?

View 1 Replies View Related

Ubuntu Networking :: WARNING: $SHELL Not Set To Bash

Jan 2, 2010

Code:

terminator557@Dissimulo:~/ieee80211-1.2.18$ sudo make INC=/path/to/kernel-headers/include/
Makefile:17:
Makefile:18: WARNING: $SHELL not set to bash.
Makefile:19: If you experience build errors, try
Makefile:20: 'make SHELL=/bin/bash'.

[code].....

View 4 Replies View Related

Ubuntu :: Create Some Aliases For Bash Shell?

Jun 14, 2010

I would like to create some aliases for bash shell. On other Unix/Linux machines I have done this using the alias command like this: alias rm rm -i

When I type that into a terminal on Ubuntu, it looks like alias is not installed. I get this:

bash: alias: rm: not found
bash: alias: rm: not found
bash: alias: -i: not found

I tried adding the alias to .bashrc instead, but then I get the same error message every time I start terminal. Just for fun I tried apt-get install alias, just to see what would happen, and it installed something called libperl-alias instead, and alias still doesn't work.

View 2 Replies View Related

General :: What Does This Cryptic Bash Command Mean - Why Command Crashes

Mar 20, 2011

Possible Duplicate: What does this cryptic bash command mean? Why this command crashes Linux? :(){ :|:& };:

View 4 Replies View Related

General :: Command To Delete Bash Command History?

May 31, 2010

What's the command to delete bash command history?

View 4 Replies View Related

General :: How To Use Foreach In Bash Shell

Mar 25, 2010

I used c-shell previously in unix. One of the useful command I used frequently is foreach.> foreach a (`cat list`)>> echo $a need to use bash shell now instead, and realized that I can't use foreach anymore. The command is not found. Does anyone knows if there is similar command / function in bash shell?

View 9 Replies View Related

General :: Use Bash Shell When I Run A Program From It?

May 11, 2011

So I open firefox from my bash shell with:

Code:
firefox google.ca
it opens firefox, I can browse, etc.
Now if I alt-tab back into my shell, i can't enter any commands in the shell.

I know that i can do this if I close firefox, but I want to keep working in my shell with firefox still open.

Is this possible?

View 6 Replies View Related

Software :: Get The 'bash' Or 'csh' Shell From Within Gvim?

Apr 8, 2010

I use ":!shell_command<enter>" OR ":sh<enter>" in gvim to execute shell commands or to get a shell. But I am getting an 'sh' shell. Is there a way to get the 'bash' or 'csh' shell from within gvim?