Execute a system command: Difference between revisions
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=={{header|Ruby}}==
string = `ls`
# runs command and returns its STDOUT as a string
string = %x{ls}
# ditto, alternative syntax
system "ls"
# runs command and returns its exit status; its STDOUT gets output to our STDOUT
print `ls`
#The same, but with back quotes
exec "ls"
# replace current process with another
=={{header|Tcl}}==
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