27.2.2019

• Show all open ports

 sudo netstat -nlp | grep :*

26.2.2019

• Limit vsftp to one IP

 vsftpd: from here.

6.2.2019

• Merge two files if a pattern matches

 awk 'NR==FNR{a[$1]; next} {for (i in a) if (index($0, i)) print $1,$2,$3,$4,$5}' galenik_Vollstamm.txt galenic_codes.txt

2.2.2019

• Merge to files if first column matches

 awk 'FNR==NR{a[$1]=$2;next} ($1 in a) {print $1,a[$1],$2,$3,$4,$5,$6,$7,$8,$9,$10}' atc wido.csv

1.2.2019

• Useful sort command:

 du -d1 -x -h / | sort -h

16.1.2019

• install Miele-LXIV from source

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