zerolagtime
staaldraad
/ uid_awk.sh
Created
December 12, 2017 14:06
Get the uid, gid and user groups without touching /etc/passwd or running the `id` command
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| awk -F: 'END {print "uid:"u" gid:"g" groups:"gg}{if($1=="Uid"){split($2,a," ");u=a[1]}if($1=="Gid"){split($2,a," ");g=a[1]}if($1=="Groups"){gg=$2}}' /proc/self/status |
staaldraad
/ awk_netstat.sh
Last active
April 3, 2024 07:01
AWK to get details from /proc/net/tcp and /proc/net/udp when netstat and lsof are not available
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| # Gawk version | |
| # Remote | |
| grep -v "rem_address" /proc/net/tcp | awk '{x=strtonum("0x"substr($3,index($3,":")-2,2)); for (i=5; i>0; i-=2) x = x"."strtonum("0x"substr($3,i,2))}{print x":"strtonum("0x"substr($3,index($3,":")+1,4))}' | |
| # Local | |
| grep -v "rem_address" /proc/net/tcp | awk '{x=strtonum("0x"substr($2,index($2,":")-2,2)); for (i=5; i>0; i-=2) x = x"."strtonum("0x"substr($2,i,2))}{print x":"strtonum("0x"substr($2,index($2,":")+1,4))}' | |
| # No Gawk | |
| # Local | |
| grep -v "rem_address" /proc/net/tcp | awk 'function hextodec(str,ret,n,i,k,c){ |