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Question

In linux, write one-line script to spit out content of file kevin.txt to stdout ONLY if kevin.txt file exists. Do it by finishing following code snippet:

ls kevin.txt > /dev/null [...]

Answer

&& cat kevin.txt

^^ note use of && to indicate only if command 1 (i.e. ls kevin.txt > /dev/null) succeeds, then run command 2 (i.e. cat kevin.txt)


Question

In linux, write one-line script to spit out content of file kevin.txt to stdout ONLY if kevin.txt file exists. Do it by finishing following code snippet:

ls kevin.txt > /dev/null [...]

Answer
?

Question

In linux, write one-line script to spit out content of file kevin.txt to stdout ONLY if kevin.txt file exists. Do it by finishing following code snippet:

ls kevin.txt > /dev/null [...]

Answer

&& cat kevin.txt

^^ note use of && to indicate only if command 1 (i.e. ls kevin.txt > /dev/null) succeeds, then run command 2 (i.e. cat kevin.txt)

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20. Advanced Shell Scripting
tc/passwd file, causing useradd to be executed. An alternate representation is grep -v '^harry:' /etc/passwd && useradd harry where the -v option inverts the sense of matching of grep . <span>&& has the opposite meaning to || , that is, to execute the second command only if the first succeeds. Adept script writers often string together many commands to create the most succinct

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