mostly fixes

[distro-setup] / brc

diff --git a/brc b/brc
index e0f2a883d209344e04e4c5a7d4b4bc9cd46d0726..ebbe38eab55b7d3e3debc8dc6e1d23b8cc279d71 100644 (file)
--- a/brc
+++ b/brc
@@ -238,8 +238,7 @@ export SL_INFO_DIR=/p/sshinfo
 if [[ -s $bashrc_dir/path-add-function ]]; then
   source $bashrc_dir/path-add-function
   if [[ $SSH_CLIENT ]]; then
-    # [[ -d /home/iank/.iank/e/e ]] mounts it unnecessarily, so use this.
-    if grep -qF /home/iank/.iank/e/e /etc/auto.iank /etc/exports &>/dev/null; then
+    if grep -qF /home/iank/.iank/e/e /etc/exports &>/dev/null; then
       export EMACSDIR=/home/iank/.iank/e/e
     fi
     path-add $bashrc_dir
@@ -1321,6 +1320,13 @@ rsu() { # [OPTS] HOST PATH
 }
 ccomp rsync rsd rsa rst rsu
 
+# find programs listening on a port
+ssp() {
+  local port=$1
+  # to figure out these args, i had to look at the man page from git version, as of 2022-04.
+  s ss -lpn state listening sport = $port
+}
+
 resolvcat() {
   local f
   if [[ $(systemctl is-active nscd ||:) != inactive ]]; then
@@ -1328,7 +1334,7 @@ resolvcat() {
   fi
   f=/etc/resolv.conf
   echo $f:;  ccat $f
-  hr; s ss -lpn 'sport = 53'
+  hr; s ss -lpn sport = 53
   if systemctl is-enabled dnsmasq &>/dev/null || [[ $(systemctl is-active dnsmasq ||:) != inactive ]]; then
     # this will fail is dnsmasq is failed
     hr; m ser status dnsmasq | cat || :
@@ -1372,6 +1378,10 @@ rmstrips() {
   ssh fencepost head -n 300 /gd/gnuorg/EventAndTravelInfo/rms-current-trips.txt | less
 }
 
+sudo () {
+  command sudo "$@" || return $?
+  DID_SUDO=true
+}
 s() {
   # background
   # I use a function because otherwise we cant use in a script,
@@ -1894,6 +1904,12 @@ psnetns() {
       if [[ $x ]]; then echo "$x"; else echo $l; fi;
     done
 }
+nonet() {
+  if ! s ip netns list | grep -Fx nonet &>/dev/null; then
+    s ip netns add nonet
+  fi
+  sudo -E env /sbin/ip netns exec nonet sudo -E -u iank /bin/bash
+}
 
 m() { printf "%s\n" "$*";  "$@"; }