how to use the arrow keys in shell scripting. is there any special synatax / command for this.
i just want to use the arrow keys for navigation.
replies appreciated
raguram R (3 Replies)
I would like to get a script to respond to arrow key presses to scroll up and down a menu.
The platform is CDLinux which uses a prehistoric version of bash, version 1.14.7.
I would like to do something like "read -sn 1 keyin" but the "read" command is so primative that it only has the -r... (1 Reply)
hello everybody,
as many, I have a problem with a script...
I wrote a shell script in which I want to read a variable value. the problem is that I can't use the arrow keys.
Here is the script I use :
#!/bin/bash
stty erase ^H
read foune
echo "$foune"
exit 0;
the problem is... (2 Replies)
Hi, I'd like to make a script where I can send a directory OR files as an argument, and compress them. My proble mis, I do know how to send a directory, but I do not know what to do if there are more than 1 file, I mean I can store the directory in $1, but how do I store 4 files? must I write $1,... (3 Replies)
Hi Experts,
Need your help.
I am trying to send a command via ssh to about a hundred network devices. I intend to do this via a bash script something similar to the below:
ssh -l user testmachine.com "show version"
Obviously this will not work given the password prompt that comes... (2 Replies)
Is there a quick and dirty utility to send emails (does not need to be part of a package to receive and view email, in fact, I'd prefer if it wasn't).
Ideally I would like to be able to send attachments as well.
Mike
---------- Post updated at 04:29 PM ---------- Previous update was at... (9 Replies)
I have a sample script here I want to bold the word BOLD in the text and send through email. Tried several ways but not seems to working.
BODY="Hello. I want to BOLD this"
{
echo "From: from@gmail.com"
echo "To: to@gmail.com"
echo "Subject: Texting"
... (1 Reply)
Hi All,
Consider we have script Linux server . But we don't have permission to edit that file.
When run the script, it opens a file as "/tmp/xxx0000 .txt" with few contents. Most of the time the contents doesn't required to modify and they just save and close (:wq!).
So the script continues... (7 Replies)
Discussion started by: k_manimuthu
7 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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 v5.16.3 2010-06-11 SHELL-QUOTE(1)