Specific challenges faced while migrating shell scripts from Solaris 10 to RHEL 7.5

# Source environment: $ uname -a SunOS machine1 5.10 Generic_150400-63 sun4u sparc SUNW,SPARC-Enterprise $ pwd / $ ls -l /bin/sh lrwxrwxrwx 1 root root 13 Nov 1 19:39 /bin/sh -> ../../sbin/sh # Target environment: $ pwd /root $ ls -l /bin/sh lrwxrwxrwx. 1 root root 4 Jul 16 12:10 /bin/sh -> bash $ cat /etc/system-release Red Hat Enterprise Linux Server release 7.5 (Maipo) In target environment, we use shebang line #!/bin/sh in every script ---------------------------------------------------- Shell scripts in solaris environment are using shebang line #!/usr/bin/ksh and #!/bin/sh Goal is to migrate shell scripts from Solaris 10 to RHEL 7.5 ----------------------------------------------------- 1) Are scripts written solaris korn shell & /bin/sh shell, [posix compliant](http://pubs.opengroup.org/onlinepubs/9699919799/nfindex.html) ? for seamless migration to bash(in Linux) without verification of code.. 2) If no, What are the verifications required before migrating scripts to Linux?