Why we write /bin/sh

Please need some help. In shell Programming, we know it should begin with "! But today I saw "! Anyone could explain that for me? What is Infrastructure Monitoring. I am trying to install net-snmp on an HPUX box. I am getting the fallowing error message when I try to run the snmpconf file. I installed the fallowing version of net-snmp net-snmp This is not working. RedHat Commands. OpenSolaris Commands. Linux Commands. SunOS Commands.

FreeBSD Commands. This is hard coded thing. Every system has its own shell which the system will use to execute its own system scripts. This system shell can be vary from OS to OS most of the time it will be bash.

Bash bash is one of many available yet the most commonly used Unix shells. The -v option tells the shell to run in verbose mode. In practice, this means that the shell will echo each command prior to executing the command. This will be useful in locating the line of script that has created an error. The application ensures that the commands to be executed are expressed in the language described in Shell Command Language.

Improve this question. Rahul Virpara Rahul Virpara Add a comment. Active Oldest Votes. Improve this answer. Chan-Ho Suh 7, 4 4 gold badges 39 39 silver badges 73 73 bronze badges. Your first paragraph is quite misleading. My advice is to use dash as often as possible for scripting, especially for server-side scripts. Although bash is more expressive, dash runs quite a lot faster and is more secure. Rick So should I explicitly put!

I have also written scripts where I only write commands and execute with. Is the! Rick In the cases where I exclude any! Will that implicitly link to the preferred system shell without declaring! Show 1 more comment. On Linux and other Unix-like systems you have a choice of multiple shells. What you should use when writing scripts If your script requires features only supported by bash, use!

From the bash 1 man page : "If bash is invoked with the name sh, it tries to mimic the startup behavior of historical versions of sh as closely as possible, while conforming to the POSIX standard as well. AnkiF AnkiF 3 3 silver badges 2 2 bronze badges.

GNU Bash:! Well, short but accurate answer. The Overflow Blog. Podcast Explaining the semiconductor shortage, and how it might end.