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--- linux:shellcommands [2017/04/18 09:38] – [rsync] admin
+++ linux:shellcommands [2022/10/29 16:15] (current) – external edit 127.0.0.1
@@ Line 361: / Line 361: @@
   * original = a regular expression describing the word to replace (or just the word itself)
   * new = the text to replace it with
-  *g = global (i.e. replace all and not just the first occurrence)
+  * g = global (i.e. replace all and not just the first occurrence)
-Below are some basic examples:
+Below are some basic examples for searching and replaccing string<code bash>
-  * Example search and replace string<code bash>
 cat intro
+</code>output:<code>
 The Unix operating system. Unix system
+</code>
-sed 's/Unix/UNIX/g' intro  =>  Substitute Unix with UNIX
+  * Substitute Unix with UNIX: <code bash>
-The UNIX operating system. Unix system
+sed 's/Unix/UNIX/g' intro
+</code>  => output:<code>
-sed --in-place 's/Unix/UNIX/g' intro  =>  Substitute Unix with UNIX in file intro
+The UNIX operating system. Unix system</code>
+  * Substitute Unix with UNIX in file intro: <code bash>
-sed 's/Unix/UNIX/g' intro   =>  Substitute Unix with UNIX
+sed --in-place 's/Unix/UNIX/g' intro
+</code>
+  * Substitute Unix with UNIX<code bash>
+sed 's/Unix/UNIX/g' intro
 </code>
   * example with -n option<code bash>
-sed -n '1,2p' intro
+sed -n '1,2p' intro</code>=> Just print the first 2 lines
-=> Just print the first 2 lines
+  * Just print lines containing UNIX: <code bash>
 sed -n '/UNIX/p' intro
-=> Just print lines containing UNIX
+</code>
   * example Deleting Lines<code bash>
 sed '1,2d' intro
-=> Delete lines 1 and 2
+</code>=> Delete lines 1 and 2
+  * Delete all lines containing UNIX:<code bash>
 sed '/UNIX/d' intro
-=> Delete all lines containing UNIX
+</code>
+  * Delete all characters before string<code bash>
+sed 's/.*No Warranty/No Warranty/g'
 </code>
 ==== awk ====