[Scripts] Do some fixes.

Examples/rofi-file-browser.sh

@@ -64,7 +64,7 @@ then
             sed -i "s|${ROFI_FB_CUR_DIR}|##deleted##|g" "${ROFI_FB_HISTORY_FILE}"
             sed -i '/##deleted##/d' "${ROFI_FB_HISTORY_FILE}"
             echo "${ROFI_FB_CUR_DIR}" >> "${ROFI_FB_HISTORY_FILE}"
-            if [ $(cat "${ROFI_FB_HISTORY_FILE}" | wc -l) -gt ${ROFI_FB_HISTORY_MAXCOUNT} ]
+            if [ $( wc -l < "${ROFI_FB_HISTORY_FILE}" ) -gt ${ROFI_FB_HISTORY_MAXCOUNT} ]
             then
                 sed -i 1d "${ROFI_FB_HISTORY_FILE}"
             fi

test/run_dmenu_custom_test.sh

@@ -23,7 +23,7 @@ xdotool key Return
 #  Get result, kill xvfb
 wait ${RPID}
 RETV=$?
-OUTPUT=$(cat output.txt | tr '\n' ' ')
+OUTPUT=$( tr '\n' ' ' < output.txt )
 if [ "${OUTPUT}" != 'coffee ' ]
 then
     exit 1

test/run_dmenu_empty.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-cat /dev/null | rofi -dmenu &
+rofi -dmenu & < /dev/null
 RPID=$!
 sleep 4
 xdotool key Return

test/run_dmenu_normal_window_test.sh

@@ -24,7 +24,7 @@ then
     echo "thread apply all bt" | gdb rofi core.*
 fi
 
-OUTPUT=$(cat output.txt | tr '\n' ' ')
+OUTPUT=$( tr '\n' ' ' < output.txt )
 if [ "${OUTPUT}" != 'noot mies ' ]
 then
     echo "Got: '${OUTPUT}' expected 'noot mies '"

test/run_issue333_test.sh

@@ -21,7 +21,7 @@ xdotool key Escape
 #  Get result, kill xvfb
 wait ${RPID}
 RETV=$?
-OUTPUT=$(cat output.txt | tr '\n' ' ')
+OUTPUT=$(tr '\n' ' ' < output.txt)
 if [ "${OUTPUT}" != '' ]
 then
     echo "Got: '${OUTPUT}' expected nothing"

test/run_script_test.sh

@@ -17,7 +17,7 @@ xdotool key Return
 #  Get result, kill xvfb
 wait ${RPID}
 RETV=$?
-OUTPUT=$(cat output.txt | tr '\n' ' ')
+OUTPUT=$( tr '\n' ' ' < output.txt )
 echo ${OUTPUT}
 if [ "${OUTPUT}" != 'noot ' ]
 then