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Full Discussion: False positive grep?
Top Forums Shell Programming and Scripting False positive grep? Post 303045952 by MadeInGermany on Sunday 19th of April 2020 08:21:18 AM
Old 04-19-2020
That explains it; and your photo shows a non-ascii character.
It's not sufficient to sort out [a-zA-Z].

With an ERE you can ensure the input is a number:
Code:
[[ $NUM =~ ^[0-9]+$ ]] || continue
echo "$NUM is a positive integer"

Code:
[[ $NUM =~ ^-?[0-9]+$ ]] || continue
echo "$NUM is an integer"

RHS == right hand side
This User Gave Thanks to MadeInGermany For This Post:
 

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SSHMENU(1)						      General Commands Manual							SSHMENU(1)

NAME
sshmenu - GNOME applet for connecting to hosts using SSH. DESCRIPTION
The SSHMenu applet puts all your most frequently used SSH connections on a handy menu in your GNOME panel (see below for non-GNOME ver- sions. Click on a host name to open a new gnome-terminal window with an ssh connection to the selected host. Set up SSH options (such as port forwarding etc) and select a gnome terminal profile (for colour schemes, font sizes etc) using the preferences dialog. Add the applet to a GNOME panel in the normal way: right click on the panel, select 'Add to Panel' and then select the SSH Menu Applet from the list. Configure the applet using the 'Preferences' option on the applet menu. STANDALONE VERSIONS
The SSHMenu application uses the GTK GUI toolkit but is not dependent on the GNOME desktop environment. Two alternative wrapper scripts are provided: sshmenu-gnome - provides all the functionality of the SSHMenu applet but in a standalone application window that could (for example) be swallowed into the panel of an alternative desktop environment. sshmenu - provides similar functionality to sshmenu-gnome, but without any GNOME dependencies. Notably, xterm is used instead of gnome- terminal. The Hacker's Guide ( http://sshmenu.sourceforge.net/dev/hackers_guide.html ) describes a number of ways in which the SSHMenu can be further customised. OPTIONS
The applet is not invoked from the command-line however the standalone versions recognise the following options and can be extended to recognise more: -c FILE, --config-file FILE read and write config information to FILE instead of the default $HOME/.sshmenu -d NUM, --debug NUM set debug level to NUM (default: 0) -s NUM, --socket-window-id NUM use the XEmbed protocol to embed the SSHMenu user interface in the window identified by NUM instead of creating a new, top-level window, -V, --version output version information and exit AUTHOR
sshmenu-applet was written by Grant McLean <grant@mclean.net.nz> July 4, 2006 SSHMENU(1)
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