Linux HowTo - Linux / Unix Q & A from nixCraft

How to use/run bash aliases over ssh based session

December 26, 2017December 26, 2017in BASH Shell, Linux, OpenBSD, Troubleshooting, UNIX last updated December 26, 2017

I have set up a bash alias named file_repl. It works entirely when I log in using ssh command. However, my bash aliases are not running over ssh, for example:
$ ssh vivek@server1.cyberciti.biz file_repl bash: file_repl: command not found
How do I run bash shell aliases when I use ssh command?

How to find disk I/O latency with ioping monitoring tool on Linux

September 21, 2017in FreeBSD, Linux, Mac OS X, OpenBSD, UNIX last updated September 21, 2017

How do I monitor disk I/O latency in real time on Linux, FreeBSD, OpenBSD, and MacOS operating system?

Connect To Amazon AWS EC2 Instance From a CentOS / RHEL Using SSH Client

June 23, 2014June 23, 2014in Amazon Cloud Computing, CentOS, Linux, OpenBSD, RedHat and Friends, UNIX last updated June 23, 2014

I have created/launched Amazon Machine Image (AMI) instance powered by a CentOS/RHEL/Red Hat Enterprise Linux. How can I connect to my instance using OpenSSH Linux/Unix/OSX ssh client?

Linux: Jpeg Image Optimization / Compress Command

April 9, 2013September 23, 2013in Amazon Cloud Computing, Linux, UNIX last updated September 23, 2013

I know how to optimize and compress png images using optipng command. line tool. I have lots of images in JPEG format. How do I compress and optimize JPEG images on my amazon cloud account so that I can save bandwidth on cloudfront cdn account? How do I use an image compressor to create lossless compression on JPEG files, with no effect on image quality in bulk using Linux?

gnome-terminal: There Was An Error Creating The Child Process For This Terminal

December 4, 2012December 4, 2012in CentOS, RedHat and Friends, Troubleshooting last updated December 4, 2012

I am using CentOS 5 on my laptop. If I open gnome-terminal by right clicking the desktop, I am getting an error that read as follows:

There was an error creating the child process for this terminal

How do I fix this problem and open a terminal by right clicking the Debian / Ubuntu / CentOS / Fedora / RHEL / Red hat Enterprise Linux 5.x desktop system?

Linux / Unix: Unicode and HTML Characters Lookup By Name or Number

December 4, 2012December 4, 2012in Gnome, kde, Perl last updated December 4, 2012

I need to replace special characters with equivalent hexadecimal unicode under Linux or Unix like operating system. How do I list or find out unicodes for given characters?

Linux / Unix: Rsync Copy Files & Directories Names With WhiteSpaces and Blanks

November 28, 2012January 31, 2015in BASH Shell, CentOS, Debian / Ubuntu, FreeBSD, Linux, Suse, Ubuntu Linux, UNIX last updated January 31, 2015

I need to transfer a file called ‘some cool movie.avi’ that contains whitespace under rsync. How do I escape a filename or directory name with spaces in them while using rsync command under Linux / *BSD / Unix like operating systems? How do I use rsync when files / dirs contain spaces?