java - How do I redirect the output of one process as an input to another process? -


this question has answer here:

i need execute command, ps -aux | awk ' /^user/ { system("pstree " $2) }' can't execute both in 1 process execute both in separate processes , redirect output of ps -aux process input awk process.how code this? please help.

the pipe character (|) connects standard output of command left standard input of command right. it's doing ask.

if question related java, want official pipe class (courtesy @kajacx).


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