am a new Linux user. I have text files with lots of empty lines. How do I delete all empty lines under Linux or Unix operating systems?
ow do I check if a directory exists in a shell script under Linux or Unix like operating systems? How can I check if a directory exists in a shell script on Unix-like system?
am working on a shell script. I need to find out the current working directory. How do I get the current working directory under Bash or Ksh shell running on Linux or Unix like operating systems?
am a new Linux command line user. How do I start or run command in the background so that I can access command prompt immediately?
I am new Linux and Unix user. How do I show the active jobs on Linux or Unix-like systems using BASH/KSH/TCSH or POSIX based shell? How can I display status of jobs in the current session on Unix/Linux?
I am new Linux and Unix systems user. How do I display the time of the execution of a command/script on Linux or Unix-like operating systems using shell prompt?
am new Linux and Unix-like system user who recently switched from MS-Windows XP. How do I save the output of a Linux / Unix ls
command to a file named “lists.txt” using command prompt or POSIX shell such as SH/KSH/BASH?