Without the quotes, your version will be invalid if the path to your home directory contains spaces or possibly other special characters.
During shell startup the session file is executed. Old files are periodically deleted. It disables more than just the per-session command histories, and you can disable just the per-session command history. ChrisPage Actually Apple changed some bits of script. Updated answer, thanks. This seems to be working right now.
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Does it have any ramifications? JakeGould Thanks Chris - what else does it disable my history has been working as expected same as previous osx version and same as linux for the last couple of months. Don't know why they changed it?
Bash history to Zsh history · GitHub
Alex Rojo Alex Rojo 51 1 1 silver badge 1 1 bronze badge. Nice fix, without having to modify rvm. When and why should that become involved? This indeed helped! I've edited.
Maybe you source another script that changes the variable? NelsonLiu, isn't it obvious? That's all. All seems well now. Julian Jordan Julian Jordan 1. For me, it wasn't the file permissions, it was that I hadn't defined any of the HIST control variables. Apparently one or more of them must be defined. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Newsletter 3 — The 75 lines of code that changed history.
Therefore, if you have supplied multiple commands but wish to access a prior one to run as admin and redirect its output to a text file for troubleshooting purposes, then you can output a brief history with "history 10" and then run the command "sudo! You can also rerun a prior command by its relative position using negative numbers.
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For example, to run the last command you can enter "!! In addition to referencing the history by number, you can do so by name.
Upgrading Bash on macOS
For example, if you have run a command that begins with "pico" to invoke this editor on a document but since then have changed directory or listed directory contents a few times, you can immediately repeat the command that began with "pico" by the following command:. This can be used to locate the last command that begins with the provided text, but a final approach here is to repeat the last command that includes the mentioned text, which may be convenient to pick out one of many commands that were run with "sudo. The question marks here are like wild cards, so you can remove the one at the end to have the first command run that ended in the included string, which might be a convenient way to re-edit a specific script file if you have just run commands to edit a number of different scripts.
NOTE: A similar approach to the exclamation point can be done by entering the command "fc -s" alone or followed by the name of the prior command to run. This can be aliased or scripted as a separate command, but is a bit redundant to the use of the exclamation point.
“Null” you know how to do it
The Terminal history will not be written to the history file until you close the current Terminal session, so this approach can be useful for transfering commands from one Terminal session to another. For instance, if you have two Terminals open and enter a complex command in one, to get it to the second Terminal window, simply close the first this will write its history buffer to the history file , and then in the second window type "history -r" to re-read the saved history file.
bersdicquihosfi.ml With these actions done, then scroll up using the arrow keys in the second Terminal window you can also use the history function to location the position of the command from the closed Terminal session. After you scroll through the second window's history buffer it will start revealing the commands in the history file, with the first one being the complex command from the initial Terminal window. Using the history in the manners mentioned can be useful, but in addition you may wish to remove an entry or two from the history, or clear it completely if needed.
To do this, you can either close the Terminal windows and then remove the history file, or in what is a simpler approach, run "history -c" in the Terminal to clear the history, followed by entering "history -w" to write the now empty history file.
These steps will clear the entire history, which may not always be desired, especially if you only wish to remove a single command that perhaps shows the location of a private file or is one you would perhaps not wish to inadvertently run again. To do this, you can remove the history line by number.
First use the history command by itself to list the entire history or at least enough lines of it to reveal the unwanted command , and then note the identifier number for the command and run the following to remove it from the history:. Have a fix? Post them below or e-mail us! We tested 5G speeds in 13 cities. Here's what we found : Faster speed versus more coverage. That's the most important issue for 5G networks today. We drowned AirPods, Powerbeats Pro and Galaxy Buds : We sprayed them, dunked them and even put them through the wash to find out which one of these three wireless earphones can handle the most water.
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Be respectful, keep it civil and stay on topic. We delete comments that violate our policy , which we encourage you to read. Discussion threads can be closed at any time at our discretion. Don't show this again. By Topher Kessler. Listing the history The Terminal history will reveal all commands entered in the current session and those from any prior but now closed sessions.