Bash processes - Revision history

Heth: /* example */

2022-12-17T06:43:59Z

‎example

Heth: /* example */

2022-12-16T08:37:40Z

‎example

Heth: /* example */

2022-12-16T07:39:33Z

‎example

Heth at 07:20, 16 December 2022

2022-12-16T07:20:20Z

Heth: Created page with "=example= #!/bin/bash count() { NAME=$1 COUNT_TO=$2 COUNTER=0 echo -e "My name is $NAME my PID is $BASHPID" # $$ does..."

2022-12-16T06:58:51Z

Created page with "=example= <source lang=bash line> #!/bin/bash count() { NAME=$1 COUNT_TO=$2 COUNTER=0 echo -e "My name is $NAME my PID is $BASHPID" # $$ does..."

New page

=example=
<source lang=bash line>
#!/bin/bash

count() {
NAME=$1
COUNT_TO=$2
COUNTER=0
echo -e "My name is $NAME my PID is $BASHPID" # $$ does not show subshell PID
while test $COUNTER -le $COUNT_TO
do
sleep 1
let COUNTER=COUNTER+1
echo -e "$NAME countet to $COUNTER"
done
echo -e "$NAME signing off"
}

#Main
echo -e "I am the main function and my PID is $BASHPID"

count "Hans" 5 &
count "Ulla" 3 &

wait # Wait for subshells to finish
echo -e "Main thread signing off"
</source>
Gives the following output
<source lang=text>
My name is Hans my PID is 813980
My name is Ulla my PID is 813981
Hans countet to 1
Ulla countet to 1
Ulla countet to 2
Hans countet to 2
Ulla countet to 3
Hans countet to 3
Hans countet to 4
Ulla countet to 4
Ulla signing off
Hans countet to 5
Hans countet to 6
Hans signing off
Main thread signing off
</source>
[[Category:Linux]]

@@ Line 1: / Line 1: @@
 =example=
-See same example in [[C processes in Linux#Example of creating several processes|C]]
+See same example in [[Fork system call#Example of creating several processes|C]]
 <source lang=bash line>
 #!/bin/bash

@@ Line 8: / Line 8: @@
          COUNTER=0
          echo -e "My name is $NAME my PID is $BASHPID" # $$ does not show subshell PID
-         while test $COUNTER -le $COUNT_TO
+         while test $COUNTER -lt $COUNT_TO
          do
                  sleep 1
@@ Line 37: / Line 37: @@
 Hans countet to 3
 Hans countet to 4
 Ulla signing off
 Hans countet to 5
 Hans signing off
 Main thread signing off
 </source>
 [[Category:Linux]]