CLI
Note: If things are not working as described below check the version information for parallel. parallel --version WARNING: YOU ARE USING --tollef. IF THINGS ARE ACTING WEIRD USE --gnu. ... Either add --gnu to all your parallel commands, or edit /etc/parallel/config and make sure it lists --gnu and not
Bash
Basic Variable Usage * $VARIABLE * ${VARIABLE} BASH variables are case sensitive, e.g. $VARIABLE is not the same as $variable. The curly bracket syntax allows the variable name to be delimited from trailing characters that otherwise might be interpreted as part of the variable name: VARIABLE=end echo "The opposite of
Perl
What does use strict; in Perl really get you? By default three things, which can be specified separately or turned off separately: # All on by default when using use strict; use strict "vars"; use strict "subs"; use strict "refs"; # One or more can be turned off if need be no
CLI
What you see on a webpage isn't necessarily what you get when you copy something off it. Watch out for extra hidden logic, especially in "example commands" you might copy directly over to a prompt. The command below demonstrates the point, and is safe to run. It just doesn't do