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Top Forums UNIX for Beginners Questions & Answers Need a Bash script for iterating thru an array and running a command Post 303026953 by SVRao19056 on Wednesday 5th of December 2018 12:58:43 PM
Old 12-05-2018
Need a Bash script for iterating thru an array and running a command

Hi ,
I am a total beginner so bear with me.

I have the below code which works . I need to extend it by iterating thru the array arr and executing a command in each loop. some thing on the lines of below.
I need to run this in a Jenkins script , so I would need below
bash script to run interactively in the command line
an escaped version to run in Jenkins build

This does not work . basically does not execute

Code:
pids=(2567538 2356789); export pids;echo "pid = ${pids[*]}";arr=($(echo "${pi
ds[*]}" | tr " " "\n")); echo "arr = ${arr[*]}" ; for pid in $arr do echo $pid
 done;
>


Bash version details
Code:
$ bash -version
GNU bash, version 4.4.12(1)-release (x86_64-pc-msys)
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later

This works
Code:
$ pids=(2567538 2356789); export pids;echo "pid = ${pids[*]}";arr=($(echo "${pids[*]}" | tr " " "\n")); echo "arr = ${arr[*]}" ;


Last edited by rbatte1; 12-06-2018 at 08:54 AM..
 

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RBASH(1)						      General Commands Manual							  RBASH(1)

NAME
rbash - restricted bash, see bash(1) RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow- ing are disallowed or not performed: o changing directories with cd o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV o specifying command names containing / o specifying a file name containing a / as an argument to the . builtin command o specifying a filename containing a slash as an argument to the -p option to the hash builtin command o importing function definitions from the shell environment at startup o parsing the value of SHELLOPTS from the shell environment at startup o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators o using the exec builtin command to replace the shell with another command o adding or deleting builtin commands with the -f and -d options to the enable builtin command o using the enable builtin command to enable disabled shell builtins o specifying the -p option to the command builtin command o turning off restricted mode with set +r or set +o restricted. These restrictions are enforced after any startup files are read. When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script. SEE ALSO
bash(1) GNU Bash-4.0 2004 Apr 20 RBASH(1)
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