linux shell HowTo - Linux / Unix Q & A from nixCraft

Add / Import .SQL file To MySQL Database Server

last updated July 25, 2012 in MySQL

How do I import a MySQL .SQL text file to MySQL database sever using command line or gui tools?

HowTo: Reverse a String In Unix / Linux Shell?

last updated July 6, 2012 in BASH Shell, Perl, UNIX

How do I reverse lines of a file or files under Linux or Unix like operating systems?

Unix / Linux Shell: Get Third Field Separated by Forward Slash (/) Delimiter

last updated April 29, 2012 in BASH Shell

I‘m writing a shell script for automation purpose. The output the path of the current working directory is stored in $PWD or it can be obtained using the pwd command. How do I find out find out 3rd field separated by the forward slash (/) delimiter using $PWD under Unix like operating systems?

Bash Assign Output of Shell Command To Variable

last updated November 27, 2019 in BASH Shell, Linux, UNIX

How do I assign the output of a shell command to a shell variable under Unix like operating system? For example, I want to store the date command output to a variable called $now. How do you do that? How can I set a variable to the output of a command in Bash?

Bash Shell Count Number of Characters In a String or Word

last updated June 22, 2011 in BASH Shell

How do I count and print particular character (say D or digit 7) in a string or variable under Bash UNIX / Linux shell?

Linux: What is Dash ( /bin/dash ) Shell?

last updated May 28, 2011 in BASH Shell, Debian / Ubuntu

What is /bin/dash? I noticed that the default system shell /bin/sh was changed to /bin/dash. Why was this change made?

UNIX / Linux: Increment The Date

last updated April 26, 2011 in BASH Shell, UNIX

I want to increment the date under UNIX or Linux operating system while writing shell scripts. For example Apr/27/2011 should be incremented as Apr/28/2011 and so on. How do I increment a date in UNIX or Linux shell?