Starting multiple independent processes

I'm trying to start multiple processes at the same time using a for loop. I want each to be created in it's own console window. So far i have the following:

for i in 1..5; do konsole -e "./program arg1 arg2"; done

However , this simply runs them one after another, where i want them to run concurrently. I've tried using '&' but i can't get i to play nicely with the loop.

asked Dec 14 at 23:14

Mikkel bruun

3

Replace the ; before done with &. But first check whether konsole -e "./program arg1 arg2" does what you think it does.
– AlexP
Dec 14 at 23:20

2

@AlexP You should write that up as an answer. I would have upvoted.
– Sparhawk
Dec 15 at 3:44

add a comment |

I'm trying to start multiple processes at the same time using a for loop. I want each to be created in it's own console window. So far i have the following:

for i in 1..5; do konsole -e "./program arg1 arg2"; done

However , this simply runs them one after another, where i want them to run concurrently. I've tried using '&' but i can't get i to play nicely with the loop.

asked Dec 14 at 23:14

Mikkel bruun

3

Replace the ; before done with &. But first check whether konsole -e "./program arg1 arg2" does what you think it does.
– AlexP
Dec 14 at 23:20

2

@AlexP You should write that up as an answer. I would have upvoted.
– Sparhawk
Dec 15 at 3:44

add a comment |

I'm trying to start multiple processes at the same time using a for loop. I want each to be created in it's own console window. So far i have the following:

for i in 1..5; do konsole -e "./program arg1 arg2"; done

However , this simply runs them one after another, where i want them to run concurrently. I've tried using '&' but i can't get i to play nicely with the loop.

asked Dec 14 at 23:14

Mikkel bruun

I'm trying to start multiple processes at the same time using a for loop. I want each to be created in it's own console window. So far i have the following:

for i in 1..5; do konsole -e "./program arg1 arg2"; done

However , this simply runs them one after another, where i want them to run concurrently. I've tried using '&' but i can't get i to play nicely with the loop.

bash shell-script

asked Dec 14 at 23:14

Mikkel bruun

asked Dec 14 at 23:14

Mikkel bruun

asked Dec 14 at 23:14

Mikkel bruun

asked Dec 14 at 23:14

Mikkel bruun

asked Dec 14 at 23:14

Mikkel bruun

3

Replace the ; before done with &. But first check whether konsole -e "./program arg1 arg2" does what you think it does.
– AlexP
Dec 14 at 23:20

2

@AlexP You should write that up as an answer. I would have upvoted.
– Sparhawk
Dec 15 at 3:44

add a comment |

3

Replace the ; before done with &. But first check whether konsole -e "./program arg1 arg2" does what you think it does.
– AlexP
Dec 14 at 23:20

2

@AlexP You should write that up as an answer. I would have upvoted.
– Sparhawk
Dec 15 at 3:44

Replace the ; before done with &. But first check whether konsole -e "./program arg1 arg2" does what you think it does.
– AlexP
Dec 14 at 23:20

@AlexP You should write that up as an answer. I would have upvoted.
– Sparhawk
Dec 15 at 3:44

add a comment |

1 Answer
1

active

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votes

A background task is started by putting a & at the end of the command. Your loop would start konsole in the background if you wrote it as

for i in 1..5; do
 konsole -e "./program arg1 arg2" &
done

or, on a single line,

for i in 1..5; do konsole -e "./program arg1 arg2" & done

The & is a command terminator, just like ; (and newline and a few others), so it replaces the ; that you originally had there.

Would you want the script to wait for the started background tasks to finish, add a wait at the end:

for i in 1..5; do konsole -e "./program arg1 arg2" & done; wait

answered Dec 15 at 9:24

Kusalananda

121k16229372

add a comment |

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1 Answer
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1 Answer
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active

oldest

votes

A background task is started by putting a & at the end of the command. Your loop would start konsole in the background if you wrote it as

for i in 1..5; do
 konsole -e "./program arg1 arg2" &
done

or, on a single line,

for i in 1..5; do konsole -e "./program arg1 arg2" & done

The & is a command terminator, just like ; (and newline and a few others), so it replaces the ; that you originally had there.

Would you want the script to wait for the started background tasks to finish, add a wait at the end:

for i in 1..5; do konsole -e "./program arg1 arg2" & done; wait

answered Dec 15 at 9:24

Kusalananda

121k16229372

add a comment |

A background task is started by putting a & at the end of the command. Your loop would start konsole in the background if you wrote it as

for i in 1..5; do
 konsole -e "./program arg1 arg2" &
done

or, on a single line,

for i in 1..5; do konsole -e "./program arg1 arg2" & done

The & is a command terminator, just like ; (and newline and a few others), so it replaces the ; that you originally had there.

Would you want the script to wait for the started background tasks to finish, add a wait at the end:

for i in 1..5; do konsole -e "./program arg1 arg2" & done; wait

answered Dec 15 at 9:24

Kusalananda

121k16229372

add a comment |

A background task is started by putting a & at the end of the command. Your loop would start konsole in the background if you wrote it as

for i in 1..5; do
 konsole -e "./program arg1 arg2" &
done

or, on a single line,

for i in 1..5; do konsole -e "./program arg1 arg2" & done

The & is a command terminator, just like ; (and newline and a few others), so it replaces the ; that you originally had there.

Would you want the script to wait for the started background tasks to finish, add a wait at the end:

for i in 1..5; do konsole -e "./program arg1 arg2" & done; wait

answered Dec 15 at 9:24

Kusalananda

121k16229372

A background task is started by putting a & at the end of the command. Your loop would start konsole in the background if you wrote it as

for i in 1..5; do
 konsole -e "./program arg1 arg2" &
done

or, on a single line,

for i in 1..5; do konsole -e "./program arg1 arg2" & done

The & is a command terminator, just like ; (and newline and a few others), so it replaces the ; that you originally had there.

Would you want the script to wait for the started background tasks to finish, add a wait at the end:

for i in 1..5; do konsole -e "./program arg1 arg2" & done; wait

answered Dec 15 at 9:24

Kusalananda

121k16229372

answered Dec 15 at 9:24

Kusalananda

121k16229372

answered Dec 15 at 9:24

Kusalananda

121k16229372

answered Dec 15 at 9:24

Kusalananda

121k16229372

add a comment |

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