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8 Cards in this Set
- Front
- Back
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What 2 commands each make a new named pipe file? |
mknod mkfifo |
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What does the tee command do? Why is it useful? |
It displays the output of a command in the console and then redirects the output to a file or device. It's useful if I want to see the stdout AND simultaneously have a file created or rewritten with that content. cat /etc/hosts | tee filea |
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What is the difference between a local variable and a global variable? |
Local only exists the process it was created. Global variables are defaults that apply to all users. |
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What configuration files are read when a user logs on or when a command is executed that requires a logon? |
/etc/profile and ~/.bash/profile |
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What file is read each time a new process starts? |
~/.bashrc |
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What does the source command do? |
It's used to read changes in configuration files into memory. |
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What does redirection do? |
It alters the stdin, stdout, stderror device or file. |
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Name 3 commands are associated with environmental variables |
export <variablename> export <variablename>=value env |
