Execute combine multiple Linux commands in one line

Question

I am trying to merge multiple linux commands in one line to perform deployment operation  For example  cd  my folder rm   jar svn co path to repo mvn compile package install

User · Answer

If you want to execute all the commands  whether the previous one executes or not  you can use  semicolon     to separate the commands   cd  my folder  rm   jar  svn co path to repo  mvn compile package install   If you want to execute the next command only if the previous command succeeds  then you can use  amp  amp  to separate the commands   cd  my folder  amp  amp  rm   jar  amp  amp  svn co path to repo  amp  amp  mvn compile package install   In your case  the execution of consecutive commands seems to depend upon the previous commands  so use the second example i e  use  amp  amp  to join the commands

User · Answer

I find lots of answer for this kind of question misleading   Modified from this post  https   www webmasterworld com linux 3613813 htm  The following code will create bash window and works exactly as a bash window  Hope this helps  Too many wrong not-working answers out there                 Process proc              try                     create a bash window                 proc   Runtime getRuntime   exec   bin bash                    if  proc    null                           BufferedReader in   new BufferedReader new InputStreamReader proc getInputStream                             PrintWriter out   new PrintWriter new BufferedWriter new OutputStreamWriter proc getOutputStream      true                          BufferedReader err   new BufferedReader new InputStreamReader                         proc getErrorStream                               input into the bash window                        out println  cd  my folder                           out println  rm   jar                           out println  svn co path to repo                           out println  mvn compile package install                           out println  exit                           String line                          System out println  ----printing output-----                              while   line   in readLine       null                                 System out println line                                                         while  line   err readLine       null                                   read errors                                                       proc waitFor                              in close                              out close                              err close                              proc destroy                                     catch  IOException e                       TODO Auto-generated catch block                 e printStackTrace                  catch  InterruptedException e                       TODO Auto-generated catch block                 e printStackTrace

User · Answer

What is the utility of an only one Ampersand   This morning  I made a launcher in the XFCE panel  in Manjaro XFCE  to launch 2 passwords managers simultaneously   sh -c  keepassx  amp  amp  password-gorilla  or sh -c  keepassx  password-gorilla    But it does not work as I want  I E   the first app starts but the second starts only when the previous is closed  However  I found that  with only one ampersand    sh -c  keepassx  amp  password-gorilla    and it works as I want now

User · Answer

To run them all at once  you can use the pipe line key     like so      cd  my folder   rm   jar   svn co path to repo   mvn compile package install

User · Answer

cd  my folder  amp  amp  rm   jar  amp  amp  svn co path to repo  amp  amp  mvn compile package install

User · Answer

If you want to execute each command only if the previous one succeeded  then combine them using the  amp  amp  operator   cd  my folder  amp  amp  rm   jar  amp  amp  svn co path to repo  amp  amp  mvn compile package install   If one of the commands fails  then all other commands following it won t be executed   If you want to execute all commands regardless of whether the previous ones failed or not  separate them with semicolons   cd  my folder  rm   jar  svn co path to repo  mvn compile package install   In your case  I think you want the first case where execution of the next command depends on the success of the previous one   You can also put all commands in a script and execute that instead       bin sh cd  my folder    amp  amp  rm   jar    amp  amp  svn co path to repo    amp  amp  mvn compile package install    The backslashes at the end of the line are there to prevent the shell from thinking that the next line is a new command  if you omit the backslashes  you would need to write the whole command in a single line    Save that to a file  for example myscript  and make it executable   chmod  x myscript   You can now execute that script like other programs on the machine  But if you don t place it inside a directory listed in your PATH environment variable  for example  usr local bin  or on some Linux distributions   bin   then you will need to specify the path to that script  If it s in the current directory  you execute it with     myscript   The commands in the script work the same way as the commands in the first example  the next command only executes if the previous one succeeded  For unconditional execution of all commands  simply list each command on its own line       bin sh cd  my folder rm   jar svn co path to repo mvn compile package install

User · Answer

You can use as the following code   cd  my folder  amp  amp    rm   jar  amp  amp    svn co path to repo  amp  amp    mvn compile package install   It works

User · Answer

I ve found that using   to separate commands only works in the foreground   eg    cmd1  cmd2  cmd3  amp   -  will only execute cmd3 in the background  whereas cmd1  amp  amp  cmd2  amp  amp  cmd3  amp  - will execute the entire chain in the background IF there are no errors    To cater for unconditional execution  using parenthesis solves this     cmd1  cmd2  cmd3   amp  - will execute the chain of commands in the background  even if any step fails

User · Answer

You can separate your commands using a semi colon   cd  my folder rm   jar svn co path to repo mvn compile package install   Was that what you mean

[linux] Execute combine multiple Linux commands in one line

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