Hello ,
Today I was trying to take Threaddump for my Java process in single command with date and hostname like this
$ jstack -l `pgrep java` > /tmp/TD_`hostname`_`date`_`pgrep java`
But I am getting error like
-bash: /tmp/TD_`hostname`_`date`_`pgrep java`: ambiguous redirect
Then I posted at unix.stackexchange.com and a friend named Muru helped me in fixing that issue with very simple way
$ echo foo > /tmp/TD_`hostname`_`date`_`pgrep java`
bash: /tmp/TD_`hostname`_`date`_`pgrep java`: ambiguous redirect
$ echo foo > /tmp/"TD_`hostname`_`date`_`pgrep java`"
$ ls /tmp/TD*
/tmp/TD_muru-arch_Sat 26 Dec 16:14:29 IST 2015
Summary : Command jstack -l `pgrep java` > /tmp/TD_`hostname`_`date`_`pgrep java` is wrong
and right way of using this is jstack -l `pgrep java` > /tmp/"TD_`hostname`_`date`_`pgrep java` "
Hope it will help you.
Today I was trying to take Threaddump for my Java process in single command with date and hostname like this
$ jstack -l `pgrep java` > /tmp/TD_`hostname`_`date`_`pgrep java`
But I am getting error like
-bash: /tmp/TD_`hostname`_`date`_`pgrep java`: ambiguous redirect
Then I posted at unix.stackexchange.com and a friend named Muru helped me in fixing that issue with very simple way
$ echo foo > /tmp/TD_`hostname`_`date`_`pgrep java`
bash: /tmp/TD_`hostname`_`date`_`pgrep java`: ambiguous redirect
$ echo foo > /tmp/"TD_`hostname`_`date`_`pgrep java`"
$ ls /tmp/TD*
/tmp/TD_muru-arch_Sat 26 Dec 16:14:29 IST 2015
Summary : Command jstack -l `pgrep java` > /tmp/TD_`hostname`_`date`_`pgrep java` is wrong
and right way of using this is jstack -l `pgrep java` > /tmp/"TD_`hostname`_`date`_`pgrep java` "
Hope it will help you.
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