Example: [[ -z $XDG_DESKTOP_DIR ]] && echo "Your desktop is: $XDG_DESKTOP_DIR" || echo "$HOME/.config/user-dirs.dirs not loaded yet."
Which is the same as: (note the '\', that tells the line isnt dont yet, there must be no trailing spaces!)
Which i prefer for 'short code' like setting a variable.
The && is appending the following command if previous command returns 0/true.
The || indicates what is done if the previous condition/command failed.
Examples:
hth
Last edited by sea; 10-08-2013 at 11:03 AM..
Reason: uh.. wasnt asked.. but since we're on it..
When I log in from my linux workstation (CentOS4) to a solaris 8 server using SSH or telnet, the terminal settings don't seem to work well. When I tail or vi a file, I get a blank screen or no response, and I am no longer able to interact with the session. I have to type the escape sequence to... (2 Replies)
Hi all,
I would like to know how to have a color display in the terminal...
In the sense that,
In many linux terminals,we have color coded for each file type,
green for executable ,blue for dirs and so on...
I wanted to know how i can have the same arrangement in solaris(b-79a)
I am not... (5 Replies)
Hi,
I keep on getting the following error on my linux terminal. It did not harm my system so far, but I was wondering if this can be eliminated.
{
Gecko:4617): GLib-GObject-CRITICAL **: file gobject.c: line 1337 (g_object_unref): assertion `G_IS_OBJECT (object)' failed
(Gecko:4617):... (2 Replies)
Hello all
is there any free tool like linux tabbed terminal but for windows
im used to work with putty and its great but i wander if there something like putty
but with tabs
thanks (12 Replies)
hi im new to this and i just want to learn about linux and i just wanted to know how would i be able to perform a system check to see if a directory exists.
can any one help me? (2 Replies)
Hello!
I need to create a file and provide access to two users of the file under the same command in linuxs terminal window.
The question is how can I do it? (3 Replies)
Hello everyone, I have an interesting project I'd like to implement on a Linux server here at work. Essentially, I'd like to replace a handful of Windows servers with a single Linux server. The only task these Windows servers perform, is provide remote desktops via RDP protocol that people... (13 Replies)
Hi,
How can we get the process id of the terminal we are using?
When we logged in to unix, we have an associated terminal. we can use "tty" command to get the terminal we are using like:
/dev/pts/0
I want to know the process id of this terminal. Please reply as I searched a lot but I... (8 Replies)
Discussion started by: crazybisu
8 Replies
LEARN ABOUT MOJAVE
echo
ECHO(1) BSD General Commands Manual ECHO(1)NAME
echo -- write arguments to the standard output
SYNOPSIS
echo [-n] [string ...]
DESCRIPTION
The echo utility writes any specified operands, separated by single blank (' ') characters and followed by a newline ('
') character, to the
standard output.
The following option is available:
-n Do not print the trailing newline character. This may also be achieved by appending 'c' to the end of the string, as is done by iBCS2
compatible systems. Note that this option as well as the effect of 'c' are implementation-defined in IEEE Std 1003.1-2001
(``POSIX.1'') as amended by Cor. 1-2002. Applications aiming for maximum portability are strongly encouraged to use printf(1) to sup-
press the newline character.
Some shells may provide a builtin echo command which is similar or identical to this utility. Most notably, the builtin echo in sh(1) does
not accept the -n option. Consult the builtin(1) manual page.
EXIT STATUS
The echo utility exits 0 on success, and >0 if an error occurs.
SEE ALSO builtin(1), csh(1), printf(1), sh(1)STANDARDS
The echo utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002.
BSD April 12, 2003 BSD