Bash - Revision history

Anko: /* for */

2013-10-28T21:03:12Z

for

2013-10-28T21:02:53Z

2013-10-28T20:46:56Z

masivi

2013-10-28T15:38:20Z

2013-10-28T09:53:27Z

Three-expression bash for loops syntax

2013-10-28T09:52:22Z

for

2013-10-28T09:16:07Z

for

2013-10-28T09:15:01Z

2013-10-28T08:58:06Z

2013-10-28T07:49:05Z

for

@@ Line 52: / Line 52: @@
     ...
     commandN
-done
+ done
 Примери:
@@ Line 202: / Line 202: @@
    /bin/cp $f $f.bak
   done
 == Масиви ==

@@ Line 1: / Line 1: @@
 http://www.tldp.org/LDP/Bash-Beginners-Guide/html/
-== masivi ==
+== Масиви ==
 <code><pre>

← Older revision		Revision as of 15:38, 28 October 2013
Line 1:		Line 1:
	http://www.tldp.org/LDP/Bash-Beginners-Guide/html/		http://www.tldp.org/LDP/Bash-Beginners-Guide/html/
		+
		+	== masivi ==
		+
		+	<code><pre>
		+	#!/bin/bash
		+
		+	declare abc=()
		+
		+	for((i=0;i<100;i++))
		+	do
		+	# echo "write something!"
		+	# read line
		+
		+	sleep 1
		+	ping 10.3.0.1 >/dev/null &
		+	abc+=($!)
		+
		+	echo "Process: $i. s PID ${abc[$i]}"
		+	echo "start pinging"
		+	done
		+
		+	sleep 5
		+
		+	for((i=0;i<100;i++))
		+	do
		+	sleep 1
		+	kill ${abc[$i]}
		+	echo "killed: PID ${abc[$i]}"
		+	echo "start pinging"
		+	done
		+	</pre></code>

	== четене от стандартния вход (най-често терминала)==		== четене от стандартния вход (най-често терминала)==

@@ Line 110: / Line 110: @@
 	command3
 done
 A representative three-expression example in bash as follows:
+====Три-условен for====
 <code><pre>
   #!/bin/bash

@@ Line 99: / Line 99: @@
 There is no good reason to use an external command such as seq to count and increment numbers in the for loop, hence it is recommend that you avoid using seq. The builtin command are fast.
-Three-expression bash for loops syntax
+===Three-expression bash for loops syntax ===
 This type of for loop share a common heritage with the C programming language. It is characterized by a three-parameter loop control expression; consisting of an initializer (EXP1), a loop-test or condition (EXP2), and a counting expression (EXP3).
 for (( EXP1; EXP2; EXP3 ))
 do
@@ Line 109: / Line 110: @@
 	command3
 done
 A representative three-expression example in bash as follows:
-#!/bin/bash
+<code><pre>
-for (( c=1; c<=5; c++ ))
+ #!/bin/bash
-do
+ for (( c=1; c<=5; c++ ))
     echo "Welcome $c times"
-done
+ done
-−
-Sample output:
+//Sample output:
 Welcome 1 times
@@ Line 124: / Line 127: @@
 Welcome 4 times
 Welcome 5 times
 How do I use for as infinite loops?

@@ Line 28: / Line 28: @@
 done
 </pre></code>
 for VARIABLE in file1 file2 file3

@@ Line 3: / Line 3: @@
 A 'for loop' is a bash programming language statement which allows code to be repeatedly executed. A for loop is classified as an iteration statement i.e. it is the repetition of a process within a bash script.
-Tutorial details
 For example, you can run UNIX command or task 5 times or read and process list of files using a for loop. A for loop can be used at a shell prompt or within a shell script itself.
@@ Line 15: / Line 10: @@
 Numeric ranges for syntax is as follows:
 for VARIABLE in 1 2 3 4 5 .. N
 do