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In computing, command substitution is a facility that allows a command to be run and its output to be pasted back on the command line as arguments to another command. . Command substitution first appeared in the Bourne shell, [1] introduced with Version 7 Unix in 1979, and has remained a characteristic of all later Uni
Memory or file overwrites in POSIX systems, as well as in shells such as Bash, often happen unintentionally - such as using the > redirection operator. Therefore, to prevent unintentional clobbering, various means can be used - for example, setting the shell parameter set -o noclobber ( bash , ksh ) or set noclobber ( csh , tcsh ) will prevent ...
Expect is an extension to the Tcl scripting language written by Don Libes. [2] The program automates interactions with programs that expose a text terminal interface. Expect, originally written in 1990 for the Unix platform, has since become available for Microsoft Windows and other systems.
It quickly became popular because it made the C shell fast and easy to use. History has since become a standard feature in other shells, including ksh, Bash and Microsoft's cmd.exe. History addressed two important scenarios: Executing the same command or a short sequence of commands over and over.
Prince Harry won't be the only royal at his upcoming Invictus Games in Canada, as a prince and princess based in the U.S. have relayed their RSVP yes.. According to the Danish royal family's ...
Kylie Jenner is officially 20 years old -- and what better way to celebrate than with a nearly-nude photo? The reality star thanked fans for their birthday wishes with a series of ultra-risque ...
Redshift is primarily distributed for and used on the Linux operating system.. Redshift can be used to set a single color temperature and brightness ("one-shot mode") or can adjust the temperature and brightness continuously to follow the Sun's elevation, in which case it will transition to the night color temperature settings near twilight.
Set up a high-performance computing software stack, including software for batch job submission, parallel libraries, and other software that is useful on a cluster; Cloning and imaging Linux and Windows machines; xCAT has specific features designed to take advantage of IBM hardware including: Remote Power Control; Remote POST/BIOS console