Both Kshell and bash expand variables at the time PS1 is written to the tty, and thus using $() the shell can be coaxed into doing what you want
Thanks,
That is what I was looking for!
Quote:
Originally Posted by agama
I agree with earlier posts that suggest setting the prompt either in your profile, or the system profile, as being the smart way of doing it, but wanted to point out that it can be done this way.
Like I wrote:
Quote:
Originally Posted by adderek
I would like to use more complex conditionals than in the given example.
FYI:
I wanted to get this:
What results in printing line like: script.sh:123 + command_executed
And modified terminal window every time an error is thrown. Before I achieved similar result with trap on ERR.
in csh I was using:
set prompt=""$HOSTNAME".tk.\!> "
to customize the look of my prompt. I have seen the light after reading the perils of csh scripting and wish to switch to bash. How do I customize my bash prompt??? I've tried many variation of the above w/no success, and searching this... (2 Replies)
I want to combine 2 conditional statements by using -o in bash, but it won't work.
if ; then
echo "The number needs to be between 0 and $nr"
fi
Each time i execute the file it says:
./selectCitaat: line 10: syntax error near unexpected token `$1' (3 Replies)
It looks like,
user@hostname:/auto/home3/user$
Desired,
user@hostname$
I added following line in .bashrc, but still its same.
export PS1=" $ "
Please help me :confused: (13 Replies)
I'm using a custom prompt with PS1 in my .profile. It is
PS1="\\u@\e\:\W\ \\$\ \"
and it works well, as you can see,
http://content.screencast.com/users/killer54291/folders/Jing/media/2b3db52a-ebf7-43e2-95cc-f45dadbc2b98/00000023.png
but, when i type more than the width of the window, it... (0 Replies)
This is an instance of "if it's not one thing, it's another."
I recently fell victim to my own stupidity in trashing, by accident, my long-running and very highly-customized .bash_profile and .bashrc files for Cygwin & Cygwin/X. I had backups from a previous "go" with this, and decided to use... (0 Replies)
I am working with a script to simplyfy some operations where I work, but one of the programs needs me to enter a password.
It will as me "Please enter the administrator password:"
Is there a way to make a bash script to automatically answer the question with the needed password?
I am looking... (3 Replies)
I have a file
cat <<EOF > /tmp/test
Line one
Line two
Line three
EOF
Now I am trying to get the exit stat ($?) of 1 if any text is found and 0 if any text is not found using grep, i.e. just reversing the exit status of grep
# (snippet 1) this one is not working!!! retval $?... (4 Replies)
Hello Guys,
I have facing problem with linux shell prompt .Am expecting my Bash prompt to be like below
but its showing like
~]$ ot@Servername and while typing the commands the prompt looks like below:
~]$ echo $PS1
$
~]$ ot@ServernameChecked the .bash_profile and also changed... (9 Replies)
I think(hope) I've got a simple one - I just need to send an email if a mysql query returns any results (ideally - it will never match).
Currently I just pipe the mysql query output to the mail program, but of course that emails regardless of the output( and I check this every 10 minutes from... (5 Replies)
I use the .bashrc file from this thread.
Direct link to the archive containing the ultimate bashrc
I am trying to use autojump, but it will not autoload the directories to the autojump list as the custom prompt is not compatible.
Here is the thread on the issue from other users.
apt -... (2 Replies)
Discussion started by: genehunter
2 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS --debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.8.4 2005-05-03 SHELL-QUOTE(1p)