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@bmwant
Last active April 22, 2018 10:00
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Same useful shell commands
#!/usr/bin/env bash
# help set
set -e # Exit immediately if a command exits with a non-zero status.
set -x # Print commands and their arguments as they are executed.
# Export same evironment as process has
strings /proc/$PID/environ
strings /proc/20316/environ | awk '{ print "export "$1}' >> export_env.sh
source export_env.sh
# same as above but escape variables in double quotes
strings /proc/20316/environ | awk -F '=' '{printf "export %s=\"%s\"\n", $1, $2}' > export_env.sh
# Do not save history of current shell
history -c
# remove previous history
rm ~/.bash_history
# bash operators and conditions
# Return true if a bash variable is unset or set to the empty string: if [ -z "$var" ];
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