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What does 2>&1 | tee mean?
“brew formula” installation logsWhat does the @ sign and the number next to it mean in ls -l display?What does error “the Classic Environment is no longer supported” mean?What does a hard link do?What is “TALagent” and why is it “Exiting out of boredom”?What is wrong in this command about grepping and pandocing?What does “is not recognized as an internal or external command” error mean?What exactly does “out of application memory” mean?Unable to brew install wineterminal script to search CSV fileRe-installation from the internet fails with error code -2005F, what does it mean?
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I read the answer by @grg to question “brew formula” installation logs:
brew install <formula> 2>&1 | tee install.log
So where exactly is this install.log file going to end up, and what exactly the 2>&1 | tee part of the command mean?
macos unix
asked 8 hours ago
Fortnite LuciferFortnite Lucifer
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I read the answer by @grg to question “brew formula” installation logs:
brew install <formula> 2>&1 | tee install.log
So where exactly is this install.log file going to end up, and what exactly the 2>&1 | tee part of the command mean?
macos unix
asked 8 hours ago
Fortnite LuciferFortnite Lucifer
133 bronze badges
New contributor
Fortnite Lucifer is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I read the answer by @grg to question “brew formula” installation logs:
brew install <formula> 2>&1 | tee install.log
So where exactly is this install.log file going to end up, and what exactly the 2>&1 | tee part of the command mean?
macos unix
asked 8 hours ago
Fortnite LuciferFortnite Lucifer
133 bronze badges
New contributor
Fortnite Lucifer is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I read the answer by @grg to question “brew formula” installation logs:
brew install <formula> 2>&1 | tee install.log
So where exactly is this install.log file going to end up, and what exactly the 2>&1 | tee part of the command mean?
macos unix
macos unix
asked 8 hours ago
Fortnite LuciferFortnite Lucifer
133 bronze badges
New contributor
Fortnite Lucifer is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 8 hours ago
Fortnite LuciferFortnite Lucifer
133 bronze badges
New contributor
Fortnite Lucifer is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 5 hours ago
Fortnite Lucifer
asked 8 hours ago
Fortnite LuciferFortnite Lucifer
133 bronze badges
New contributor
Fortnite Lucifer is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 8 hours ago
Fortnite LuciferFortnite Lucifer
133 bronze badges
asked 8 hours ago
Fortnite LuciferFortnite Lucifer
133 bronze badges
133 bronze badges
New contributor
Fortnite Lucifer is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Fortnite Lucifer is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
The
teecommand prints the piped stdout to the file path given as well as displaying it in the terminal. This is commonly used for recording the output of commands to file which would otherwise only be ephemerally printed to the terminal.Without tee and using simple redirection of
brew install > install.logwould prevent stdout being printed to the terminal as well as the file, requiring the file to be accessed to view the messages.2>&1redirects stderr to stdout alongside the existing stdout, meaning that the error messages are redirected as normal output.Without this, tee would only print stdout without the error messages to the install log.
install.log is relative to the current directory.
answered 8 hours ago
grg♦grg
141k25 gold badges224 silver badges333 bronze badges
add a comment |
2>&1 means "send any error messages (aka 'stderr') to the same output as any informational messages (aka 'stdout")."
And
| tee install.log means "whatever output there is should also be sent to the file install.log.
answered 8 hours ago
TJ LuomaTJ Luoma
12k3 gold badges40 silver badges81 bronze badges
add a comment |
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
The
teecommand prints the piped stdout to the file path given as well as displaying it in the terminal. This is commonly used for recording the output of commands to file which would otherwise only be ephemerally printed to the terminal.Without tee and using simple redirection of
brew install > install.logwould prevent stdout being printed to the terminal as well as the file, requiring the file to be accessed to view the messages.2>&1redirects stderr to stdout alongside the existing stdout, meaning that the error messages are redirected as normal output.Without this, tee would only print stdout without the error messages to the install log.
install.log is relative to the current directory.
answered 8 hours ago
grg♦grg
141k25 gold badges224 silver badges333 bronze badges
add a comment |
The
teecommand prints the piped stdout to the file path given as well as displaying it in the terminal. This is commonly used for recording the output of commands to file which would otherwise only be ephemerally printed to the terminal.Without tee and using simple redirection of
brew install > install.logwould prevent stdout being printed to the terminal as well as the file, requiring the file to be accessed to view the messages.2>&1redirects stderr to stdout alongside the existing stdout, meaning that the error messages are redirected as normal output.Without this, tee would only print stdout without the error messages to the install log.
install.log is relative to the current directory.
answered 8 hours ago
grg♦grg
141k25 gold badges224 silver badges333 bronze badges
add a comment |
The
teecommand prints the piped stdout to the file path given as well as displaying it in the terminal. This is commonly used for recording the output of commands to file which would otherwise only be ephemerally printed to the terminal.Without tee and using simple redirection of
brew install > install.logwould prevent stdout being printed to the terminal as well as the file, requiring the file to be accessed to view the messages.2>&1redirects stderr to stdout alongside the existing stdout, meaning that the error messages are redirected as normal output.Without this, tee would only print stdout without the error messages to the install log.
install.log is relative to the current directory.
answered 8 hours ago
grg♦grg
141k25 gold badges224 silver badges333 bronze badges
The
teecommand prints the piped stdout to the file path given as well as displaying it in the terminal. This is commonly used for recording the output of commands to file which would otherwise only be ephemerally printed to the terminal.Without tee and using simple redirection of
brew install > install.logwould prevent stdout being printed to the terminal as well as the file, requiring the file to be accessed to view the messages.2>&1redirects stderr to stdout alongside the existing stdout, meaning that the error messages are redirected as normal output.Without this, tee would only print stdout without the error messages to the install log.
install.log is relative to the current directory.
answered 8 hours ago
grg♦grg
141k25 gold badges224 silver badges333 bronze badges
answered 8 hours ago
grg♦grg
141k25 gold badges224 silver badges333 bronze badges
answered 8 hours ago
grg♦grg
141k25 gold badges224 silver badges333 bronze badges
answered 8 hours ago
grg♦grg
141k25 gold badges224 silver badges333 bronze badges
141k25 gold badges224 silver badges333 bronze badges
add a comment |
add a comment |
2>&1 means "send any error messages (aka 'stderr') to the same output as any informational messages (aka 'stdout")."
And
| tee install.log means "whatever output there is should also be sent to the file install.log.
answered 8 hours ago
TJ LuomaTJ Luoma
12k3 gold badges40 silver badges81 bronze badges
add a comment |
2>&1 means "send any error messages (aka 'stderr') to the same output as any informational messages (aka 'stdout")."
And
| tee install.log means "whatever output there is should also be sent to the file install.log.
answered 8 hours ago
TJ LuomaTJ Luoma
12k3 gold badges40 silver badges81 bronze badges
add a comment |
2>&1 means "send any error messages (aka 'stderr') to the same output as any informational messages (aka 'stdout")."
And
| tee install.log means "whatever output there is should also be sent to the file install.log.
answered 8 hours ago
TJ LuomaTJ Luoma
12k3 gold badges40 silver badges81 bronze badges
2>&1 means "send any error messages (aka 'stderr') to the same output as any informational messages (aka 'stdout")."
And
| tee install.log means "whatever output there is should also be sent to the file install.log.
answered 8 hours ago
TJ LuomaTJ Luoma
12k3 gold badges40 silver badges81 bronze badges
answered 8 hours ago
TJ LuomaTJ Luoma
12k3 gold badges40 silver badges81 bronze badges
answered 8 hours ago
TJ LuomaTJ Luoma
12k3 gold badges40 silver badges81 bronze badges
answered 8 hours ago
TJ LuomaTJ Luoma
12k3 gold badges40 silver badges81 bronze badges
12k3 gold badges40 silver badges81 bronze badges
add a comment |
add a comment |
