diff --git a/languages/bash.sh b/languages/bash.sh
index ec74a11..21204cd 100644
--- a/languages/bash.sh
+++ b/languages/bash.sh
@@ -46,7 +46,7 @@ CTRL+X then (   # start recording a keyboard macro
 CTRL+X then )   # finish recording keyboard macro
 CTRL+X then E   # recall last recorded keyboard macro
 CTRL+X then CTRL+E   # invoke text editor (specified by $EDITOR) on current command line then execute resultes as shell commands
-CTRAL+A then D  # logout from screen but don't kill it, if any command exist, it will continue 
+CTRL+A then D  # logout from screen but don't kill it, if any command exist, it will continue 
 
 BACKSPACE  # deletes one character backward
 DELETE     # deletes one character under cursor
@@ -55,6 +55,7 @@ history   # shows command line history
 !!        # repeats the last command
 !<n>      # refers to command line 'n'
 !<string> # refers to command starting with 'string'
+esc :wq   # exits and saves script
 
 exit      # logs out of current session
 
@@ -88,8 +89,11 @@ readlink <filename>           # shows where a symbolic links points to
 tree                          # show directories and subdirectories in easilly readable file tree
 mc                            # terminal file explorer (alternative to ncdu)
 touch <filename>              # creates or updates (edit) your file
-mktemp -t <filename>            # make a temp file in /tmp/ which is deleted at next boot (-d to make directory)
-cat <filename>                # prints file raw content (will not be interpreted)
+mktemp -t <filename>          # make a temp file in /tmp/ which is deleted at next boot (-d to make directory)
+cat <filename>                # displays file raw content (will not be interpreted)
+cat -n <filename>             # shows number of lines
+cat filename1 > filename2     # Copy filename1 to filename2
+cat filename1 >> filename2    # merge two files texts together 
 any_command > <filename>      # '>' is used to perform redirections, it will set any_command's stdout to file instead of "real stdout" (generally /dev/stdout)
 more <filename>               # shows the first part of a file (move with space and type q to quit)
 head <filename>               # outputs the first lines of file (default: 10 lines)
@@ -183,7 +187,7 @@ dig -x <host>            # reverses lookup host
 wget <file>              # downloads file
 netstat                  # Print network connections, routing tables, interface statistics, masquerade connections, and multicast memberships
 
-time <command>             # report time consumed by command execution
+time <command>           # report time consumed by command execution
 
 
 ##############################################################################
diff --git a/tools/vim.txt b/tools/vim.txt
index 6aa912d..00c25c5 100644
--- a/tools/vim.txt
+++ b/tools/vim.txt
@@ -215,6 +215,7 @@ z=                  suggest word
 :q                  quit Vim. This fails when changes have been made.
 :q!                 quit without writing.
 :cq                 quit always, without writing.
+:w                  save without exiting.
 :wq                 write the current file and exit.
 :wq!                write the current file and exit always.
 :wq {file}          write to {file}. Exit if not editing the last