I'd like a function in my .bashrc file that would allow me to pass text to it and echo the text to a specified file. I know it's simple as "echo 'text' >> file," but ideally, I would want to alias the function so I execute something like:
Code:
user~ $ write 'this is a test' with "write" being the function, and 'this is a test' being echoed to the file. I hope I explained that well enough.
I have added mkalias in my .bashrc file as I learnt here
[Code]...
I tried to make a function to put in either my .bash_aliases or .bashrc file to make a local backup of a file, but when I call the function and try to use tab completion I get the following error:
Code:
cp: cannot stat `help': No such file or directory
The function I added is as follows:
Code:
function bk
[Code]...
Also interestingly, if I define this function at the prompt rather than in my .bashrc, tab completion works fine.
I tried to make a (very simple) function to put in my .bashrc file to make a local backup of a file, but when I call the function and try to use tab completion I get the following error: Code: cp: cannot stat `help': No such file or directory The function I added is as follows:
Code: function bk
{
cp -f --backup=numbered ${1} ${1}.bak
[code]....
What is the difference between
$echo cat
$cat echo
When I add some path in .bashrc by commenting out old path and adding new one like this:
#EXPORT HOME_PLAY=/home/gem/old_play
EXPORT HOME_PLAY=/home/gem/play
EXPORT PATH=$PATH:HOME_PLAY
After saving above changes, I enter the command: source ~/.bashrc Now if I do echo $PATH, the path shows both the old PLAY_HOME and new PLAY_HOME. This is really bad and messes up a lot of things in my project. This problem only goes away if I logout or reboot, a rather very long process. What is happening is that the old path is added to new path element and the old path includes the old path element you want to remove.
the function terminates if no key is pressed for 10 consecutive seconds. I tried using the -t option as suggested in some forums, but my version of showkey doesn't have the option of changing the timeout. The options I get are:
-h --helpdisplay this help text
-a --asciidisplay the decimal/octal/hex values of the keys
-s --scancodesdisplay only the raw scan-codes
-k --keycodesdisplay only the interpreted keycodes (default).
Is it possible to write a script to use this function and still keep the function active until an interrupt is recieved?
I want something like
Code:
export ROS_PACKAGE_PATH=~/ros:$ROS_PACKAGE_PATH
to be done already for me when I open a new terminal. How do I edit the .bashrc so that this variable is always set already?
I have the following as my $PROMPT_COMMAND in .bashrc:
Code:
PROMPT_COMMAND='
if [ $TERM = "screen" ]; then
MYPWD="${PWD/#$HOME/~}"
[ ${#MYPWD} -gt 20 ] && MYPWD=..${MYPWD:${#MYPWD}-18}
echo -n -e "33k$MYPWD33\"
fi
'
I am trying to append items to my PROMPT_COMMAND in another script/on command line. If I do the following:
[Code]....
I get no error. I've echoed the value of $PROMPT_COMMAND in both cases and their output is exactly the same.
A cluster with a head node and compute nodes. An application with a couple of env variables (App_HOME, PATH) set in .profile (default shell sh). If I login to the head node/compute nodes on a terminal everything works fine. The correct env variables are set and the application works. However, when my application tries to do it, say ssh <compute node1> <application>, it appears the environment variables are not available. It only looks in the minimal /bin, /usr/bin type PATH. This tells that the .profile is not being read
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View 8 Replies View RelatedI need to occasionally touch a file with the current timestamp as the filename. I would do so this way:
touch `date "+%Y-%m-%d_%H-%M"`.txt
However, I'd like to define an alias for this. When I try adding to the bashrc this:
alias td="touch `date "+%Y-%m-%d_%H-%M"`.txt"
the result is that the filename is the same during the entire session, since the `date ..` gets calculated just once during login...
How can I get the command to expand only when I call the alias? Or must I use a function for this?
I need to source the my /home/me/.bashrc file every time I "su -" to root. Is there any way to automate this? I cannot edit any thing in the root's environment as it is shared by people.
View 7 Replies View RelatedIn my .bashrc file, I am attempting to set JAVA_PATH to a local path, using the HOME environment variable or '~' symbol as shown in the following examples.Using ${HOME}
export JAVA_PATH='${HOME}/Software/java/jdk1.6.0_24'
When I attempt to use ${JAVA_HOME} in a my ${PATH} javec is not found. To debug it, I tried a simple ls command:
ls ${JAVA_HOME}
and get the following error:
ls: ${HOME}/Software/java/jdk1.6.0_24/: No such file or directory
Using '~': Trying to use '~' symbol as follows:
export JAVA_PATH='~/Software/java/jdk1.6.0_24'
the ls command results in the same error, however javac is found.I prefer the '~' symbol anyway, but would like to understand why the ls command does not work for either, and why it seems as though ${HOME} is not being expanded.
I accidently deleted my .bashrc file. I am a Debian user.Wat should i do??
View 7 Replies View RelatedI am trying to include my directory /usr/sbin in it's serch path for executable files using an environment variable. Would the input be: PATH="/usr/sbin"? And also upon start up, my shell should create the PRINTER environment variable which should resolve to the word sales...would that input be: PRINTER="sales"? If someone could help me with these two questions,
View 3 Replies View RelatedHow to create /.bashrc in my home directory? do i make a folder naming it /.bashrc or i make its as a file?
View 7 Replies View RelatedI want to assign the path of a sourced sub.bashrc file to an environment variable. E.g. if I type (or execute) from a known relative location
$ source ../../someDir/sub.bashrc
the sub.bashrc should set a variable like
export MyOwnLocation=/home/user1/unknownlocation/someDir
The problem is I can't use $0 as reference because the script is only sourced not executed. I also don't want to hardcode the path because the location might change and there will be more copies. Is there an easy way to create this information from within the the sourced bashrc file? I use Gnu bash 2.05b on Suse Linux 9.
attending class in the Redhat Academy Website. I was wondering how can you join the two commands of cd/usr & ls successfully in the .bashrc file?
View 10 Replies View RelatedI have a problem with my script. The problem is the system keeps rebooting after I put the directory file in .bashrc. The intentional for putting the file in .bashrc is to run the script automatically after login as root, I don know why is this happen. It was working fine for the first time without putting the file in bashrc. I could break the loop after hitting the "ESC" key. would it be the script problems?
Here is my script
count=20
while [ $count -gt 0 ];do
sleep 1
echo Press ESC to break the operation
((count=count-1))
[Code]...
I have installed a software and set the variables in the .bashrc file to avoid setting them everytime I would like to run te software. Now I have installed a new software and would like to do the same thing in the .bashrc file.How can I add the path to the new software directory without affecting the first software path.
View 2 Replies View RelatedWhere to write JAVA_HOME? In .bashrc or in .bash_profile? What's the difference?
View 1 Replies View RelatedI execute an application from a script file and redirect stdin to it from here-doc like this:
my_cli << HERE_DOC
enable
configure
10
exit
exit
HERE_DOC
This works as expected, but I don't see neither the input nor the app output. The application is an interactive prompt written in C. When I interact manually with it, I see the prompt itself and responses to my input, but when I execute the aforementioned script I see nothing. I would like it to print the input and the output as if a real user was typing. Do you know how to achieve that?
I have a process which logs output to log.txt. If I want to see the process's status in real-time, is there a way to echo that output to stdout instead of opening the log in a text editor and constantly reloading?
View 3 Replies View RelatedWhat does echo $$ give as output?
View 3 Replies View RelatedI tried following the example from here (http:url]......)Open up publicity.html for reading and writing by anyone.
Before: -rw-r--r-- publicity.html
Command: chmod og=rw publicity.html
After: -rw-rw-rw- publicity.html
Here's my terminal session:
username@ubuntu:/etc$ -rw-r--r-- bash.bashrc
-rw-r--r--: command not found
username@ubuntu:/etc$ chmod og=rw bash.bashrc[code]....
I found this script [URL].. Basically this is a shortcut for cd-ing my file system..
I can type "save nm" where "nm" is any short name for the directory, like "blog" or "blg" Then whenever I want to go to nm I'll just use 'cd nm'
But it is not working out for me, I get this error every time I enter save:
bash: save: command not found
bash: parse_git_branch: command not found
So How can I make this command work?
I want to play around my .bashrc file, but I can't seem to find a general guide to customizing it. I just want a guide that will show me examples and explain them in-depth.
Does anyone where to find one?
I erasing default text in fedora 13 root bashrc and when I want to swich user ( with su command ) to root , icant,and i see bash-4.1????
View 1 Replies View RelatedI was installing a software in my Ubuntu 9.10 and after installation completed it prompted the following warning:
Warning: Your PATH does not point to your newly installed /home/pc/Reflex/software/bin/esorex.
To ensure execution of the newly installed software you should modify your PATH.
Note that "esorex" is the executable file and by typing its name in the Terminal the program starts.
What should I write in my "bashrc" as PATH to that program?