Normal Redirect: command > filename Redirect command output to a file command >> filename APPEND into a file command < filename Type a text file and pass the text to command commandA | commandB Pipe the output from commandA into commandB commandA & commandB Run commandA and then run commandB commandA && commandB Run commandA, if it succeeds then run commandB commandA || commandB Run commandA, if it fails then run commandB Numeric handles: STDIN = 0 Keyboard input STDOUT = 1 Text output STDERR = 2 Error text output UNDEFINED = 3-9 command 2> filename Redirect any error message into a file command 2>> filename Append any error message into a file command > file 2>&1 Redirect errors and output to one file command > file 2<&1 Redirect output and errors to one file command > fileA 2> fileB Redirect output and errors to separate files command 2>&1 >filename This will fail! Redirect to /dev/null (hide errors): command 2> /dev/null Redirect error messages to /dev/null command >/dev/null 2>&1 Redirect error and output to /dev/null command >filename 2> /dev/null Redirect output to file but suppress error
Source : ss64.com
