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How to pass the output of a command as an argument?
I generally use `command` to place it’s output as argument to another command. For e.g., to find resource consumed by process foo on freebsd will be: Here, pgrep is used to extract the PID of process foo which is passed to procstat command which expects PID of process as argument.
Do you need an argument for the cut option?
-f option of cut for sure requires something more. Option -f is for “field”. You have to define which field you want cut to return. -f1-10 returns field 1 up to 10. PS: Also mind that ../data/Pacifici2013_data.csv refers to a csv file that is not in current directory but in a directory above (higher) than current.
How to capture the output of the first command?
To answer your question, it sounds like you want to capture the rate from the output of the first command, and then use the rate as a command line argument for the second command. Here’s one way to do that:
xargs is the best option to place output from a command into the argument of other commmand. Suppose the output of command1 is 3 and you want your next command to take this 3 as an argument so you want something like
How does susbtitution work in the command line?
The tool for that is a command susbtitution. If you put a command inside $ (…) (dollar-parenthesis), its output is substituted into the command line. The output of the command is split into separate words at each whitespace block, and each word is treated as a wildcard pattern; unless you want this to happen,…
How to substitute the output of a command into the command line?
The tool for that is a command susbtitution. If you put a command inside $ (…) (dollar-parenthesis), its output is substituted into the command line.
How does a pipe pass output of one command to another?
A pipe | passes the standard output of a command into the standard input of another one. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers.
How to save the output of one command?
FYI, if you don’t want to save the output to a file, but just view it in the terminal, use “-” instead of a filename to indicate stdout. wget also accepts stdin with the – switch. If you want to save the output in a file, use the -O switch.
How can I achieve the same in Linux?
In linux it is possible t do this: The question is how can I achieve the same in windows? (not using a batch file, a one liner in command prompt). Not all commands support piping so how can we evaluate one and pass result as parameter to another? I’ve tried piping and < and > but none work. Try that yourself it expects a file.