Debian: Extract packages installed to script

install_cmds_by_date.sh

#### Options
#output_file=~/debs_install.log
output_file=~/debs_install.sh

# filter logs for active install commands
# columns: $1=install date, $2=install time, $4=pkg id, $5="<none>" (?), $6=version
awk_cmd='/ install /{print "apt install " $4 " # originally installed " $1}'

#### Make the output a runnable script (in order
gunzip -c /var/log/dpkg.log.2 | awk "$awk_cmd" >1 $output_file
cat /var/log/dpkg.log.1 | awk "$awk_cmd" >> $output_file
cat /var/log/dpkg.log | awk "$awk_cmd" >> $output_file

#### Get output from dpkg logs - newest first
# tac /var/log/dpkg.log | grep " install " > $output_file
# tac /var/log/dpkg.log.1 | grep " install " >> $output_file
# gunzip -c /var/log/dpkg.log.2 | grep " install " | tac >> $output_file

#### Get output from dpkg logs - oldest first
#gunzip -c /var/log/dpkg.log.2 | grep " install " > $output_file
#cat /var/log/dpkg.log.1 | grep " install " >> $output_file
#cat /var/log/dpkg.log | grep " install " >> $output_file