The term macro processor means functionality where text and symbols are expanded to create larger expressions. A unix shell is both a command interpreter and a programming plan language. As a command interpreter, the shell provides the user interface to the rich set of gnu utilities. The programming language features allow these utilities to be combined. Files containing commands can be created, and become commands themselves. These new commands have the same status as system commands in directories such as /bin, allowing users or groups to establish custom environments to automate their common tasks. Shells may be used interactively or non-interactively. In interactive mode, they accept input typed from the keyboard. When executing non-interactively, shells execute commands read from a file.
Bash is largely compatible with sh and incorporates useful features from the korn shell ksh and the c shell csh. It is intended to be a conformant implementation save of the ieee. Posix shell and tools portion of the ieee posix specification (ieee standard 1003.1). It offers functional improvements over sh for both interactive and programming use. While the gnu operating system provides other shells, including a version of csh, bash is the default shell. Like other gnu software, bash is quite portable. It currently runs on nearly every version of Unix and a few other operating systems - independently-supported ports exist for ms-dos, os/2, and Windows platforms. 1.2 What is a shell? At its base, a shell is simply a macro processor that executes commands.
This is Edition.4, last updated 7 September 2016, of The gnu bash Reference manual, for Bash, version.4. Bash contains features that appear in other popular shells, and some features that only appear in Bash. Some of the shells that Bash has borrowed concepts from are the bourne Shell (sh the korn Shell (ksh and the c-shell (csh and its successor, tcsh). The following menu breaks the features up into categories, noting which features were inspired by other shells and which are specific to bash. This manual is meant as a brief introduction to features found. The bash manual page should be used as the definitive reference on shell behavior. 1 Introduction.1 What is Bash? Bash is the shell, or command language interpreter, for the gnu operating system. The name is an acronym for the bourne-Again shell, a pun on Stephen bourne, the author of the direct ancestor of the current Unix shell sh, which appeared in the seventh Edition Bell Labs Research version of Unix.
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Protocols used: tcp/ip, snmp, http. References: available upon request. Upload your Resume, to upload a resume on JobServe you need to allow cookies. Allow cookies, makes applying for jobs quick and easy. No need to upload a resume every time you apply. Store multiple cvs and choose which one you wish to apply with.
Make your Resume searchable by recruiters. Increase your chances of finding a job. Let recruiters contact you about jobs that are not advertised. Bash Reference manual, table of Contents, this text mba is a brief description of the features that are present in the bash shell (version.4, 7 September 2016). The bash home page.
The database used was mysql. Protocols: tcp/ip, http, imap, smtp, nntp. Oses: irix, linux 1/1996 - 4/1997 Intel Israel Ltd. Supported local area network of the haifa division of Intel Ltd. Developed command-line and www-based tools for the network support team.
Designed and administered group's Web site. Development was performed in perl. Protocols: tcp/ip, http, snmp, smtp. Academic projects : Bash Transparent ftp enhancement (1996) Added an ability to access remote files via a tcp/IP network to bourne Again Shell. Development was performed in c on osf/1 and Linux. Snmp monitoring tool for intel haifa lan (1997) Created an cgi mechanism integrated with snmp tools to allow the network engineers to trace existing lan connections at any of their stages - desktop, to, panel, hub, etc. Development was performed in perl on aix and Linux.
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Management achievements : Israeli air Force drastically improved the quality of its Meteorological surveillance and forecast. Israeli air Force has received unique tools for dealing with Bird Air Strike hazard. 6/1997 - 7/1998 doarnet Ltd. In an Internet-based start-up led a team of two programmers in creating the first ever www-based email program with full Hebrew support. Developed the product good specifications. Modified and integrated various free software (Apache, imapd) according to the project specifications. Development was performed in perl, c and sql.
The tool was successfully integrated with both proprietary and vendor packages The specifications and development documentation paved an easy way to improve the product Greatly improved the knowledge of Perl in the company development was performed in perl, xml/xslt, html, bash, tcsh Protocols: tcp/ip, ftp. Managed the equipment purchase and upgrade projects in the areas of Air picture and meteorology. Due to security reasons description of most projects are omitted. Led development of an innovative radar system for detection of flocks professional of birds in an area and warning the flying crafts about them. Created operational specifications, deployment and test plans for this system. Led development of new meteorological forecast mechanism adjusted for the mediterranean area. Created project operational specs and deployment plan.
scientific data processing program Grads ( ml ). Development is performed in perl, c and Oracle sql. Protocols: tcp/ip, ftp, http, smtp. Oses: irix.4, solaris.7 and Linux.2. 1/2001 - 2/2002, exaNet Ltd., hertzliya, israel, senior Consultant part time, led a team of four developers in a project of providing an interface to managing of a complicated hardware system. Created specification, development and deployment plans for the product Coded the less trivial parts of the product read a series of lectures on Perl for the company employees Achievements A robust tool with both cli and Web interface was completed on time.
University (last year experience: 3/1999 summary - present, tel-aviv university tel-aviv, israel nasa eosdis center. Led a team of two programmers in creation and maintenance of the distributed data center for nasa eosdis network at Tel-aviv university. Developed technical specifications for the site. Served as a system admininstrator of project's computers - various unix flavors. Created software for data processing and database ingestion. Created cgi interfaces for scientific applications. Worked closely with tau scientists and the nasa team in the usa. Technical achievements: The product delivers a robust www gateway to hundreds of gigabytes of scientific data including a shop-like data ordering system and various display features. The url is /imswww/imswelcome/.
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