diff --git a/bash/file_to_link.sh b/bash/file_to_link.sh
index e817df1..2acfc24 100755
--- a/bash/file_to_link.sh
+++ b/bash/file_to_link.sh
@@ -2,7 +2,7 @@
 
 ## usage
 USAGE="USAGE:
-$(basename "$0") source_file dest_dir
+$(basename "$0") source_file dest_dir"
 readonly USAGE
 
 function help_message() {
diff --git a/bash/file_to_zip.sh b/bash/file_to_zip.sh
index a3e80f3..fafaec5 100755
--- a/bash/file_to_zip.sh
+++ b/bash/file_to_zip.sh
@@ -37,8 +37,8 @@ if ! test -d "${TARGET}"; then
 fi
 
 ## create zip file
-NAME=$(basename "${SOURCE}")
+#NAME=$(basename "${SOURCE}")
 filename=$(basename -- "$SOURCE")
-extension="${filename##*.}"
+#extension="${filename##*.}"
 filename="${filename%.*}"
 7z a -tzip -mx=9 "${TARGET}"/"${filename}".zip "${SOURCE}"
diff --git a/bash/files_to_letters.sh b/bash/files_to_letters.sh
index ca79c52..767d2bb 100755
--- a/bash/files_to_letters.sh
+++ b/bash/files_to_letters.sh
@@ -1,5 +1,8 @@
 #!/bin/bash
 
+## Mueve todos los elementos de la carpeta donde se ejecuta a subcarpetas
+## basado en la primera letra de cada elemento
+
 shopt -s nocasematch
 shopt -s nocaseglob
 
diff --git a/bash/move_chd.sh b/bash/move_chd.sh
deleted file mode 100755
index d3e7eae..0000000
--- a/bash/move_chd.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/bash
-
-#sony.europe
-find ~/downloads/psx/europe -type f -iname "*.chd" -mtime +0 -exec mv -v {} ~/chd/Sony\ -\ PlayStation\ \(2020-10-05\)\ \(Redump\)\ \(CHD\)/europe/ \;
-
-#sony.usa
-find ~/downloads/psx/usa -type f -iname "*.chd" -mtime +0 -exec mv -v {} ~/chd/Sony\ -\ PlayStation\ \(2020-10-05\)\ \(Redump\)\ \(CHD\)/usa/ \;
-
-#sony.japan
-find ~/downloads/psx/japan -type f -iname "*.chd" -mtime +0 -exec mv -v {} ~/chd/Sony\ -\ PlayStation\ \(2020-10-05\)\ \(Redump\)\ \(CHD\)/japan/ \;
-
-#sony.psp
-find ~/downloads/psp -type f -iname "*.zip" -mtime +0 -exec mv -v {} ~/chd/Sony\ -\ PlayStation\ Portable\ \(2022-03-21\)\ \(Redump\)/ \;
diff --git a/bash/cron_skyskraper.sh b/bash/skyscraper_cron.sh
similarity index 91%
rename from bash/cron_skyskraper.sh
rename to bash/skyscraper_cron.sh
index d501e17..0d7c6ce 100755
--- a/bash/cron_skyskraper.sh
+++ b/bash/skyscraper_cron.sh
@@ -3,7 +3,8 @@ readonly APP=/home/sergio/code/bashscript/skyscraper_system.sh
 readonly LOG=/home/sergio/cronjobs/cronjobs.log
 readonly SYSTEMS_COMPUTERS="amstradcpc amiga atarist c64"
 readonly SYSTEMS_OTHER="dreamcast gc nds pcengine psp psx saturn segacd"
-readonly TODAY=$(date +"%d-%m-%Y")
+TODAY=$(date +"%d-%m-%Y")
+readonly TODAY
 
 printf "\n%s (%s, %s)\n" "$(basename "${0}")" "${TODAY}" "$(date +%A)" >>"${LOG}"
 
@@ -16,7 +17,7 @@ for SYSTEM in $SYSTEMS_COMPUTERS; do
     ${APP} scrap /home/sergio/roms/computer "${SYSTEM}"
     END=$(date -u +"%s")
 
-    ELAPSED=$(($END - $START))
+    ELAPSED=$((END - START))
     E=$(date -ud @$ELAPSED +'%H:%M:%S')
 
     printf " (%s)\n" "${E}" >>"${LOG}"
@@ -31,7 +32,7 @@ for SYSTEM in $SYSTEMS_OTHER; do
     ${APP} scrap /home/sergio/roms/skyscraper "${SYSTEM}"
     END=$(date -u +"%s")
 
-    ELAPSED=$(($END - $START))
+    ELAPSED=$((END - START))
     E=$(date -ud @$ELAPSED +'%H:%M:%S')
 
     printf " (%s)\n" "${E}" >>"${LOG}"
diff --git a/bash/telegram_bot_arg.sh b/bash/telegram_bot_arg.sh
deleted file mode 100755
index a4d14a5..0000000
--- a/bash/telegram_bot_arg.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/bin/bash
-
-TOKEN="5383183749:AAHV8pc9yN_h_LNfixOJXAvVYCNcby0HlCY"
-ID="717637871"
-MENSAJE=$1
-URL="https://api.telegram.org/bot$TOKEN/sendMessage"
-
-curl -s -X POST $URL -d chat_id=$ID -d text="$MENSAJE" > /dev/null
diff --git a/bash/telegram_bot_pipe.sh b/bash/telegram_bot_pipe.sh
deleted file mode 100755
index 0e27674..0000000
--- a/bash/telegram_bot_pipe.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/bin/bash
-
-TOKEN="5383183749:AAHV8pc9yN_h_LNfixOJXAvVYCNcby0HlCY"
-ID="717637871"
-MENSAJE=$(</dev/stdin)
-URL="https://api.telegram.org/bot$TOKEN/sendMessage"
-
-curl -s -X POST $URL -d chat_id=$ID -d text="$MENSAJE" > /dev/null