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edited Jan 19, 2019 at 23:45> is used to overwrite (“clobber”) a file and >> is used to append to a file.
Thus, when you use ps aux > file, the output of ps aux will be written to file and if a file named file was already present, its contents will be overwritten.
And if you use ps aux >> file, the output of ps aux will be written to file and if the file named file was already present, the file will now contain its previous contents and also the contents of ps aux, written after its older contents of file.
Content Under CC-BY-SA license What's is the difference between ">" and ">>" in shell command?
Could someone explain to me the difference between > and >> when using shell commands? Example: ps -aux > log ps -aux >> log It seems the result is the same …✓ > is used to overwrite (“ clobber ”) a file and >> is used to append to a file. Thus, when you use ps aux > file , the output of ps aux will be written to file an…Difference between $ {} and $ () in a shell script - Super User
Seems like ${variable} is the same as $variable, while $() is to execute a command. Why use ${} then? $(command) is “command substitution”. As you seem to understand, it runs the …
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What's the difference between <<, <<< and < < in bash?
Sep 27, 2015 · The difference assuming you are running bash is command1 is run in a subshell in the second case while it is run in the current shell in the first one. That means variables set in …
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[[ is bash's improvement to the [ command. It has several enhancements that make it a better choice if you write scripts that target bash. My favorites are: It is a syntactical feature of the …
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Difference between “>” and “>>” in Linux | Shells …
Jun 12, 2021 · “>” and “>>” both are output (STDOUT) direction operators, however, they differ in the following ways. “>” overwrites an already existing file or a new file is created providing the mentioned file name isn’t there in the …
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You could fiddle with temporary files to get the difference between >> and >. The > sign is used for redirecting the output of a program to something other than stdout (standard output, which …
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