extracting the java version from multiple linux servers

-1

My below script is not giving the correct java version from the remote server, instead prints the version of the source server:

    for i in 'cat serverlist.txt'

    do

    ssh $i `java -version 2>&1 >/dev/null | grep 'java version' | awk '{print $3}'|sed 's/"//g'`

    done >>sample.txt

cat sample.txt

expected result would like below:

eg: 1.8.181 (each server would be having a different version, that shud be printed)

edited Nov 14 '18 at 13:42

asked Nov 14 '18 at 13:27

Siva Malla

263

here are examples how to use ssh with commands: zaiste.net/a_few_ways_to_execute_commands_remotely_using_ssh Also, pssh (paralel ssh) might be usefull: cyberciti.biz/cloud-computing/…

– malyy
Nov 15 '18 at 8:28

add a comment |

-1

My below script is not giving the correct java version from the remote server, instead prints the version of the source server:

    for i in 'cat serverlist.txt'

    do

    ssh $i `java -version 2>&1 >/dev/null | grep 'java version' | awk '{print $3}'|sed 's/"//g'`

    done >>sample.txt

cat sample.txt

expected result would like below:

eg: 1.8.181 (each server would be having a different version, that shud be printed)

edited Nov 14 '18 at 13:42

asked Nov 14 '18 at 13:27

Siva Malla

263

here are examples how to use ssh with commands: zaiste.net/a_few_ways_to_execute_commands_remotely_using_ssh Also, pssh (paralel ssh) might be usefull: cyberciti.biz/cloud-computing/…

– malyy
Nov 15 '18 at 8:28

add a comment |

-1

My below script is not giving the correct java version from the remote server, instead prints the version of the source server:

    for i in 'cat serverlist.txt'

    do

    ssh $i `java -version 2>&1 >/dev/null | grep 'java version' | awk '{print $3}'|sed 's/"//g'`

    done >>sample.txt

cat sample.txt

expected result would like below:

eg: 1.8.181 (each server would be having a different version, that shud be printed)

edited Nov 14 '18 at 13:42

asked Nov 14 '18 at 13:27

Siva Malla

263

My below script is not giving the correct java version from the remote server, instead prints the version of the source server:

    for i in 'cat serverlist.txt'

    do

    ssh $i `java -version 2>&1 >/dev/null | grep 'java version' | awk '{print $3}'|sed 's/"//g'`

    done >>sample.txt

cat sample.txt

expected result would like below:

eg: 1.8.181 (each server would be having a different version, that shud be printed)

shell

edited Nov 14 '18 at 13:42

asked Nov 14 '18 at 13:27

Siva Malla

263

edited Nov 14 '18 at 13:42

asked Nov 14 '18 at 13:27

Siva Malla

263

edited Nov 14 '18 at 13:42

asked Nov 14 '18 at 13:27

Siva Malla

263

asked Nov 14 '18 at 13:27

Siva Malla

263

asked Nov 14 '18 at 13:27

Siva Malla

263

here are examples how to use ssh with commands: zaiste.net/a_few_ways_to_execute_commands_remotely_using_ssh Also, pssh (paralel ssh) might be usefull: cyberciti.biz/cloud-computing/…

– malyy
Nov 15 '18 at 8:28

add a comment |

here are examples how to use ssh with commands: zaiste.net/a_few_ways_to_execute_commands_remotely_using_ssh Also, pssh (paralel ssh) might be usefull: cyberciti.biz/cloud-computing/…

– malyy
Nov 15 '18 at 8:28

here are examples how to use ssh with commands: zaiste.net/a_few_ways_to_execute_commands_remotely_using_ssh Also, pssh (paralel ssh) might be usefull: cyberciti.biz/cloud-computing/…

– malyy
Nov 15 '18 at 8:28

add a comment |

2 Answers
2

active

oldest

votes

You shouldn't be using back ticks in remote command - single quotes are probably what you're looking for:

ssh $i 'java -version 2>&1 >/dev/null | grep "version" | cut -d" " -f 3-'

answered Nov 14 '18 at 15:13

mtraton

not working , getting the below: ssh $i java -version 2>&1 >/dev/null | grep "version" | cut -d" " -f 3-|sed 's/"//g' WARNING This is a Proprietary System You have accessed a Proprietary System If you are not authorized to use this computer system, you MUST log off now. Unauthorized use of this computer system, including unauthorized attempts or ksh: 1.8.0_172: not found

– Siva Malla
Nov 15 '18 at 7:09

add a comment |

I am able to get my results correctly after trying the below:

ssh $server >sample.txt 2>&1 java -version 2>&1 >/dev/null | grep 'java version' | awk '{print $3}'|sed 's/"//g' >>s1.txt exit; cat s1.txt

answered Nov 20 '18 at 6:37

Siva Malla

263

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

You shouldn't be using back ticks in remote command - single quotes are probably what you're looking for:

ssh $i 'java -version 2>&1 >/dev/null | grep "version" | cut -d" " -f 3-'

answered Nov 14 '18 at 15:13

mtraton

not working , getting the below: ssh $i java -version 2>&1 >/dev/null | grep "version" | cut -d" " -f 3-|sed 's/"//g' WARNING This is a Proprietary System You have accessed a Proprietary System If you are not authorized to use this computer system, you MUST log off now. Unauthorized use of this computer system, including unauthorized attempts or ksh: 1.8.0_172: not found

– Siva Malla
Nov 15 '18 at 7:09

add a comment |

You shouldn't be using back ticks in remote command - single quotes are probably what you're looking for:

ssh $i 'java -version 2>&1 >/dev/null | grep "version" | cut -d" " -f 3-'

answered Nov 14 '18 at 15:13

mtraton

not working , getting the below: ssh $i java -version 2>&1 >/dev/null | grep "version" | cut -d" " -f 3-|sed 's/"//g' WARNING This is a Proprietary System You have accessed a Proprietary System If you are not authorized to use this computer system, you MUST log off now. Unauthorized use of this computer system, including unauthorized attempts or ksh: 1.8.0_172: not found

– Siva Malla
Nov 15 '18 at 7:09

add a comment |

You shouldn't be using back ticks in remote command - single quotes are probably what you're looking for:

ssh $i 'java -version 2>&1 >/dev/null | grep "version" | cut -d" " -f 3-'

answered Nov 14 '18 at 15:13

mtraton

You shouldn't be using back ticks in remote command - single quotes are probably what you're looking for:

ssh $i 'java -version 2>&1 >/dev/null | grep "version" | cut -d" " -f 3-'

answered Nov 14 '18 at 15:13

mtraton

answered Nov 14 '18 at 15:13

mtraton

answered Nov 14 '18 at 15:13

mtraton

answered Nov 14 '18 at 15:13

mtraton

not working , getting the below: ssh $i java -version 2>&1 >/dev/null | grep "version" | cut -d" " -f 3-|sed 's/"//g' WARNING This is a Proprietary System You have accessed a Proprietary System If you are not authorized to use this computer system, you MUST log off now. Unauthorized use of this computer system, including unauthorized attempts or ksh: 1.8.0_172: not found

– Siva Malla
Nov 15 '18 at 7:09

add a comment |

not working , getting the below: ssh $i java -version 2>&1 >/dev/null | grep "version" | cut -d" " -f 3-|sed 's/"//g' WARNING This is a Proprietary System You have accessed a Proprietary System If you are not authorized to use this computer system, you MUST log off now. Unauthorized use of this computer system, including unauthorized attempts or ksh: 1.8.0_172: not found

– Siva Malla
Nov 15 '18 at 7:09

not working , getting the below: ssh $i java -version 2>&1 >/dev/null | grep "version" | cut -d" " -f 3-|sed 's/"//g' WARNING This is a Proprietary System You have accessed a Proprietary System If you are not authorized to use this computer system, you MUST log off now. Unauthorized use of this computer system, including unauthorized attempts or ksh: 1.8.0_172: not found

– Siva Malla
Nov 15 '18 at 7:09

add a comment |

I am able to get my results correctly after trying the below:

ssh $server >sample.txt 2>&1 java -version 2>&1 >/dev/null | grep 'java version' | awk '{print $3}'|sed 's/"//g' >>s1.txt exit; cat s1.txt

answered Nov 20 '18 at 6:37

Siva Malla

263

add a comment |

I am able to get my results correctly after trying the below:

ssh $server >sample.txt 2>&1 java -version 2>&1 >/dev/null | grep 'java version' | awk '{print $3}'|sed 's/"//g' >>s1.txt exit; cat s1.txt

answered Nov 20 '18 at 6:37

Siva Malla

263

add a comment |

I am able to get my results correctly after trying the below:

ssh $server >sample.txt 2>&1 java -version 2>&1 >/dev/null | grep 'java version' | awk '{print $3}'|sed 's/"//g' >>s1.txt exit; cat s1.txt

answered Nov 20 '18 at 6:37

Siva Malla

263

I am able to get my results correctly after trying the below:

ssh $server >sample.txt 2>&1 java -version 2>&1 >/dev/null | grep 'java version' | awk '{print $3}'|sed 's/"//g' >>s1.txt exit; cat s1.txt

answered Nov 20 '18 at 6:37

Siva Malla

263

answered Nov 20 '18 at 6:37

Siva Malla

263

answered Nov 20 '18 at 6:37

Siva Malla

263

answered Nov 20 '18 at 6:37

Siva Malla

263

add a comment |

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