1. Remove needless profile=@profile@
2. Simplify needless sh -c "cat glob 2>/dev/null"
   into cat glob 2>/dev/null
3. Use $( instead of ` under sh
4. Assign to D_U directly and either export it or unset it

Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
---
Please keep me in CC, as I'm not subscribed

 config/profile.csh.in | 12 +++++-------
 config/profile.sh.in  | 11 ++---------
 2 files changed, 7 insertions(+), 16 deletions(-)

diff --git a/config/profile.csh.in b/config/profile.csh.in
index 01f7c2f2..2495aaa0 100644
--- a/config/profile.csh.in
+++ b/config/profile.csh.in
@@ -1,4 +1,3 @@
-
 # $HOME/.login* or similar files may first set $DEBUGINFOD_URLS.
 # If $DEBUGINFOD_URLS is not set there, we set it from system *.url files.
 # $HOME/.*rc or similar files may then amend $DEBUGINFOD_URLS.
@@ -6,11 +5,10 @@
 # such as $DEBUGINFOD_MAXSIZE, $DEBUGINFOD_MAXTIME, $DEBUGINFOD_PROGRESS.
 
 if (! $?DEBUGINFOD_URLS) then
-    set prefix="@prefix@"
-    set debuginfod_urls=`sh -c "cat @sysconfdir@/debuginfod/*.urls 2>/dev/null" | tr '\n' ' '`
-    if ( "$debuginfod_urls" != "" ) then
-        setenv DEBUGINFOD_URLS "$debuginfod_urls"
+    set DEBUGINFOD_URLS=`cat @sysconfdir@/debuginfod/*.urls 2>/dev/null | tr '\n' ' '`
+    if ( "$DEBUGINFOD_URLS" != "" ) then
+        setenv DEBUGINFOD_URLS "$DEBUGINFOD_URLS"
+    else
+        unset DEBUGINFOD_URLS
     endif
-    unset debuginfod_urls
-    unset prefix
 endif
diff --git a/config/profile.sh.in b/config/profile.sh.in
index afce3963..1fc6d6ed 100644
--- a/config/profile.sh.in
+++ b/config/profile.sh.in
@@ -1,4 +1,3 @@
-
 # $HOME/.profile* or similar files may first set $DEBUGINFOD_URLS.
 # If $DEBUGINFOD_URLS is not set there, we set it from system *.url files.
 # $HOME/.*rc or similar files may then amend $DEBUGINFOD_URLS.
@@ -6,12 +5,6 @@
 # such as $DEBUGINFOD_MAXSIZE, $DEBUGINFOD_MAXTIME, $DEBUGINFOD_PROGRESS.
 
 if [ -z "$DEBUGINFOD_URLS" ]; then
-    prefix="@prefix@"
-    debuginfod_urls=`sh -c "cat @sysconfdir@/debuginfod/*.urls 2>/dev/null" | tr '\n' ' '`
-    if [ -n "$debuginfod_urls" ]; then
-        DEBUGINFOD_URLS="$debuginfod_urls"
-        export DEBUGINFOD_URLS
-    fi
-    unset debuginfod_urls
-    unset prefix
+    DEBUGINFOD_URLS=$(cat @sysconfdir@/debuginfod/*.urls 2>/dev/null | tr '\n' ' ')
+    [ -n "$DEBUGINFOD_URLS" ] && export DEBUGINFOD_URLS || unset DEBUGINFOD_URLS
 fi
-- 
2.34.1