Revisions to Preserve bash history in multiple terminal windows

formatting only, minor edit

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edited Jun 13, 2020 at 8:39

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Add the following to ~/.bashrcyour ~/.bashrc:

# Avoid duplicates
HISTCONTROL=ignoredups:erasedups  
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend

# After each command, append to the history file and reread it
PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND$'\n'}history -a; history -c; history -r"

Add the following to ~/.bashrc

# Avoid duplicates
HISTCONTROL=ignoredups:erasedups  
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend

# After each command, append to the history file and reread it
PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND$'\n'}history -a; history -c; history -r"

Add the following to your ~/.bashrc:

# Avoid duplicates
HISTCONTROL=ignoredups:erasedups
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend

# After each command, append to the history file and reread it
PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND$'\n'}history -a; history -c; history -r"

When using the export command some strange behaviour occurs. Specifically, try running `bash` to reload the configuration file, then `echo $PROMPT_COMMAND`. The $PROMPT_COMMAND variable becomes n copies of this command when export is used!! Not good. The answer also does not specify why export

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edit approved Nov 5, 2019 at 20:31

suntzuisafterU

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2

Add the following to ~/.bashrc

# Avoid duplicates
export HISTCONTROL=ignoredups:erasedups  
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend

# After each command, append to the history file and reread it
export PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND$'\n'}history -a; history -c; history -r"

Add the following to ~/.bashrc

# Avoid duplicates
export HISTCONTROL=ignoredups:erasedups  
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend

# After each command, append to the history file and reread it
export PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND$'\n'}history -a; history -c; history -r"

Add the following to ~/.bashrc

# Avoid duplicates
HISTCONTROL=ignoredups:erasedups  
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend

# After each command, append to the history file and reread it
PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND$'\n'}history -a; history -c; history -r"

Add the following to ~/.bashrc

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edit approved Oct 13, 2017 at 15:46

user1133275

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Add the following to ~/.bashrc

# Avoid duplicates
export HISTCONTROL=ignoredups:erasedups  
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend

# After each command, append to the history file and reread it
export PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND$'\n'}history -a; history -c; history -r"

# Avoid duplicates
export HISTCONTROL=ignoredups:erasedups  
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend

# After each command, append to the history file and reread it
export PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND$'\n'}history -a; history -c; history -r"

Add the following to ~/.bashrc

# Avoid duplicates
export HISTCONTROL=ignoredups:erasedups  
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend

# After each command, append to the history file and reread it
export PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND$'\n'}history -a; history -c; history -r"

Go back to not using -cr, which somehow breaks at shell startup. Sorry.

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edit approved Dec 15, 2014 at 22:00

Tobu

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Explain a bit more. I think the HISTCONTROL setting is broken, though

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edit approved Dec 15, 2014 at 21:14

Tobu

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history -c and -r can be combined; wewt syntax highlighting \o/

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edited Dec 15, 2014 at 20:56

HalosGhost

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history -c and -r can be combined

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edit approved Dec 15, 2014 at 20:56

Tobu

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It's generally safer to add things to the end of the prompt command than the beginning. Other commands in PROMPT_COMMAND won't be added to the history, but any command that uses $? needs to be at the front of PROMPT_COMMAND (for instance Powerline).

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edit approved Mar 27, 2014 at 19:17

Harmony Orb

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answered Aug 26, 2010 at 14:37

Pablo R.

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