Section J. UNIX COMMAND SUMMARY See the on-line man pages on your system for syntax, options, and specific function of each command. awk - pattern scanning and processing language cal - display a calendar cat - concatenate and display cc - C compiler chgrp - change the group ownership of a file chmod - change the permissions mode of a file cmp - perform a byte-by-byte comparison of two files comm - display lines in common, and lines not in common, between two sorted lists compress, uncompress, zcat - compress or expand files, display expanded contents cp - copy files cpio - copy file archives in and out csh - a shell (command interpreter) with a C-like syntax and advanced interactive features csplit - split a file with respect to a given context cut - remove selected fields from each line of a file date - display or set the date df - report free disk space on file systems diff - display line-by-line differences between pairs of text files du - display the number of disk blocks used per directory or file echo - echo arguments to the standard output ed - basic line editor ex, edit, e - line editor expr - evaluate arguments as a logical, arithmetic, or string expression file - determine the type of a file by examining its contents find - find files by name, or by other characteristics finger - display information about users ftp - file transfer program grep, egrep, fgrep - search a file for a string or regular expression head - display first few lines of specified files hostid - print the numeric identifier of the current host hostname - set or print name of current host system kill - send a signal to a process, or terminate a process login - log in to the system lp, cancel - send/cancel requests to a printer lpstat - display the printer status information ls - list the contents of a directory mail - read or send mail messages man - display reference manual pages; find reference pages by keyword mesg - permit or deny messages on the terminal mkdir - make a directory more, page - browse or page through a text file mv - move or rename files nohup - run a command immune to hangups and quits nroff - format documents for display or line-printer passwd, chfn, chsh - change local or NIS password information paste - join corresponding lines of several files, or subse- quent lines of one file perl - Practical Extraction and Report Language ps - display the status of current processes pwd - display the pathname of the current working directory rm, rmdir - remove (unlink) files or directories sed - stream editor sh - shell, the standard UNIX system command interpreter and command-level language size - display the size of an object file sleep - suspend execution for a specified interval sort - sort and collate lines spell - report spelling errors split - split a file into pieces stty - set or alter the options for a terminal tail - display the last part of a file tar - create tape archives, and add or extract files tee - replicate the standard output telnet - user interface to a remote system using the TELNET protocol test - return true or false according to a conditional expression time - time a command troff - typeset or format documents tty - display the name of the terminal umask - display the file creation mask uname - display the name of the current system uniq - remove or report adjacent duplicate lines uucp - Unix to Unix copy vi, view, vedit - visual display editor based on ex(1) w - who is logged in, and what are they doing wc - display a count of lines, words, and characters who - who is logged in on the system write - write a message to another user
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