120 Answered Questions for the topic Linux

Linux Java

04/14/19

Error: Could not find or load main class?

I am having trouble compiling and running my Java code, intended to allow me to interface Java with a shared object for Vensim, a simulation modeling package. The following code compiles without... more
Linux C Unix

04/11/19

Why does ENOENT mean "No such file or directory"?

What is "ENT" short for? The `error` : >No such file or directory should just be named by "ENOFILE". Is there any story or reason?
Linux Unix Syntax Bash

04/04/19

How do I syntax check a Bash script without running it?

Is it possible to check a bash script syntax without executing it? Using Perl, I can run `perl -c 'script name'`. Is there any equivalent command for bash scripts?
Linux C++ C Api

04/04/19

What is Linux’s native GUI API?

I hope this doesn’t come across as a stupid question but it’s always something I have wondered. Both Windows (Win32 API) and OS X (Cocoa) have their own APIs to handle windows, events and other OS... more

04/02/19

Why does the C preprocessor interpret the word "linux" as the constant "1"?

Why does the C preprocessor in GCC interpret the word `linux` (small letters) as the constant `1`? test.c: #include int main(void) { int linux = 5; return 0; } Result of `$ gcc -E... more

Will Photoshop run on Linux?

I have installed Photoshop on Linux using wine. It's crashing again and again. Is there any way to use Photoshop on linux?
Linux Unix Ssh

03/27/19

How to download a file from server using SSH?

I need to download a file from server to my desktop. (UBUNTU 10.04) I don't have a web access to the server, just ssh. If it helps, my OS is Mac OS X and iTerm 2 as a terminal.
Linux Unix Bash Path

03/27/19

How to permanently set $PATH on Linux/Unix?

I'm trying to add a directory to my path so it will always be in my Linux path. I've tried: export PATH=$PATH:/path/to/dir This works, however each time I exit the terminal and start a new... more

03/26/19

How to convert Word (doc) to PDF in linux?

I have a set of files in **.doc** format, that need to be converted to **.pdf** format. I am using Ubuntu linux.

03/26/19

How do I get cURL to not show the progress bar?

I'm trying to use cURL in a script and get it to ***not*** show the progress bar. I've tried the `-s`, `-silent`, `-S`, and `-quiet` options, but none of them work. Here's a typical command I've... more
Linux Java Install Wget

03/18/19

Downloading Java JDK on Linux via wget is shown license page instead?

When I try to download Java from Oracle I instead end up downloading a page telling me that I need agree to the OTN license terms. > # Sorry! > > In order to download products from... more
Linux Unix Grep

03/15/19

How do I grep recursively?

How do I recursively `grep` all directories and subdirectories? find . | xargs grep "texthere" *

03/14/19

How to find out what group a given user has?

In Unix/Linux, how do you find out what group a given user is in via command line?

03/14/19

How to join multiple lines of file names into one with custom delimiter?

I would like to join the result of `ls -1` into one line and delimit it with whatever i want. Are there any standard Linux commands I can use to achieve this?
Linux Unix

03/14/19

Using ls to list directories and their total sizes?

Is it possible to use `ls` in Unix to list the total size of a sub-directory and all its contents as opposed to the usual 4K that (I assume) is just the directory file itself? I.E. total 12K ... more

03/14/19

grep, but only certain file extensions?

I am working on writing some scripts to `grep` certain directories, but these directories contain all sorts of file types. I want to `grep` just `.h` and `.cpp` for now, but maybe a few others in... more
Linux Unix Bash Shell

03/14/19

How to run a shell script on a Unix console or Mac terminal?

I know it, forget it and relearn it again. Time to write it down.

How to run "hello, world!" assembly language program?

How do I assemble, link, and run the "hello, world!" assembly language program, and get the output using these steps:  1)  as testme.s -o testme.o2)  gcc testme.o3)  ./a.out   I am new to this... more
Linux

11/23/14

Linux file manager that can both sort and group

I was using Windows and i miss this file manager feature when you was able to group files by type and sort it by date (both at the same time)   like here:... more
Linux Sql Server

02/19/14

create a view in sql server reading from a linux server informix database using ODBC connection

how can i create a view in sql server reading from a linux server informix database. I'm using an ODBC connection

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