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--- guides:tar [2020/08/15 14:50] – [Overview] wikiadmin
+++ guides:tar [2024/07/25 15:01] (current) – external edit 127.0.0.1
@@ Line 2: / Line 2: @@
 To make a tar file from the directory homework1
-    <code bash>
-$ tar czf homework1 homework1.tgz
+<code>
+$ tar czf homework1.tgz homework1
 </code>
 To check the contents of a tar file called homework1.tgz
-     <code bash>
+<code>
 $ tar tzf homework.tgz
 </code>
 To extract the contents of a tar file called homework1.tgz
-    <code bash>
+<code>
 $ tar xzf homework1.tgz
 </code>
@@ Line 21: / Line 24: @@
 <code>
-[dbennett@cslab103 homework1]$ ls
+$ ls
 Makefile  hello.cpp
 </code>
@@ Line 33: / Line 36: @@
 ===== Creating a TAR File =====
-The best parctice
+The best practice is to work on each project in a folder or directory.  For this example the code for a project is located in the directory homework1.
-===== Extracting files from a TAR File =====
+  - Move one directory above the homework1 directory
+    - If you can see the directory you wish to create a tar archive of when you type ls  you are in the correct directory.
+<code>
+$ ls
+homework1
+</code>
+  -  type the command ** tar cvzf homework1.tgz homework1 **
+    - ** c ** tells tar to create a tar archive.
+    - ** v ** tells tar to show you what it is adding to the archive
+    - ** z ** tells tar to use gnuzip to compress the resulting file
+    - ** f ** tells tar to write the output to a file, not to the tape devuce
+    - ** homework1.tgz ** is the name of the output file.
+    - ** homework1 ** is the name of the directory you wish to place in the tar file
+<code>
+$ tar cvzf homework1.tgz homework1
+</code>
+In the following example the user types ** ls ** to show that the directory homework1 exists.  After that, the tar command to create a tar file is issued.  This command is run in verbose mode so each file or directory is listed as it is added to the tar file.  The example concludes with a listing of the directory showing that the tar file ** homework1.tgz ** has been created.
+<code>
+$ ls
+homework1
+$ tar cvzf homework1.tgz homework1
+homework1/
+homework1/Makefile
+homework1/hello.cpp
+$ ls
+homework1  homework1.tgz
+</code>
 ===== Checking the Contents of a TAR File =====
+To check the contents of a tar file use the following command in the directory containing the tar file.
+<code>
+$ tar tzf homework1.tgz
+</code>
+Note that in this command ** c ** has been replaced with ** t ** which means table of contents.
+<code>
+$ ls
+homework1  homework1.tgz
+$ tar tzf homework1.tgz
+homework1/
+homework1/Makefile
+homework1/hello.cpp
+</code>
+===== Extracting files from a TAR File =====
+To extract the contents of a tar file
+  * The tar file should be located in the current working directory.
+  * Any files matching those in the tar file will be replaced.
+In the tar command, ** c ** should be replaced with ** x **, which tells tar to extract the contents of the file.
+<code>
+$ tar xzf homework1.tgz
+</code>
+In the following example
+  * The user types ** ls ** to show the contents of the current directory.
+  * The user issues the tar command to extract the contents of a file.
+    * The addition of the ** v ** flag tells tar to be verbose, ie show the files as they are extracted.
+  * The user types ** ls ** again to show that the directory homework1 has been created.
+  * The user types ** ls -r homework1 ** to show the files have been extracted in the homework1 directory
+<code>
+$ ls
+homework1.tgz
+$ tar xvzf homework1.tgz
+homework1/
+homework1/Makefile
+homework1/hello.cpp
+$ ls
+homework1  homework1.tgz
+$ ls -r homework1
+hello.cpp  Makefile
+</code>
 ===== Tar Files and WinSCP =====
+WinSCP has the ability to deal with tar files.
+To create a tar file of a directory
+  * Select the directory
+  * Right click and select ** File Custom Commands **
+  * Select ** Tar/GZip **
+  * {{:guides:tar1.png?nolink|}}
+  * You may have to allow a new ssh session
+  * Provide the name for the tar file.
+  * {{:guides:tar3.png?nolink|}}
+  * Notice the new tar file is located in the current directory.
+  * {{:guides:tar4.png?nolink|}}