Process substitution is not specified by POSIX, so not all POSIX shell support it, only some shells like bash, zsh, ksh88, ksh93 support.
In Centos system, /bin/sh is symlink to /bin/bash. When bash is invoked with name sh, bash enters posix mode (Bash Startup Files - Invoked with name sh). In posix mode, process substitution is not supported, cause syntax error.
Script should work, if you call bash directly bash test.sh. If not, maybe bash has entered posix mode. This can be occur if you start bash with --posix argument or variable POSIXLY_CORRECT is set when bash start:
$ bash --posix test.sh
test.sh: line 54: syntax error near unexpected token `('
test.sh: line 54: `paste <(printf "%s\n" "TOP")'
$ POSIXLY_CORRECT=1 bash test.sh
test.sh: line 54: syntax error near unexpected token `('
test.sh: line 54: `paste <(printf "%s\n" "TOP")
Or bash is built with --enable-strict-posix-default option.
dashinstead ofbash). – steeldriver yesterday#!/bin/shat the top. I executed asbash test.shbut it did not work either. – NecNecco yesterdaybashin POSIX mode doesn't support that syntax either (when called with--posixor as/bin/sh). Use#!/bin/bash. – jordanm yesterdayPOSIXLY_CORRECTvariable set when you startbash? – Gnouc yesterday#!/bin/bashat the top fixed the problem. – NecNecco yesterday