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E

• _Exit(), _exit - terminate a process
• _exit(), _Exit - terminate a process
• echo - write arguments to standard output
• ed - edit text
• encrypt() - encoding function (CRYPT)
• endgrent(), getgrent, setgrent - group database entry functions
• endhostent(), gethostent, sethostent - network host database functions
• endnetent(), getnetbyaddr, getnetbyname, getnetent, setnetent - network database functions
• endprotoent(), getprotobyname, getprotobynumber, getprotoent, setprotoent - network protocol database functions
• endpwent(), getpwent, setpwent - user database functions
• endservent(), getservbyname, getservbyport, getservent, setservent - network services database functions
• endutxent(), getutxent, getutxid, getutxline, pututxline, setutxent - user accounting database functions
• env - set the environment for command invocation
• environ, execl, execle, execlp, execv, execve, execvp, fexecve - execute a file
• erand48(), drand48, jrand48, lcong48, lrand48, mrand48, nrand48, seed48, srand48 - generate uniformly distributed pseudo-random numbers
• erf(), erff, erfl - error functions
• erfc(), erfcf, erfcl - complementary error functions
• erfcf(), erfc, erfcl - complementary error functions
• erfcl(), erfc, erfcf - complementary error functions
• erff(), erf, erfl - error functions
• erfl(), erf, erff - error functions
• errno - error return value
• errno.h - system error numbers
• eval - construct command by concatenating arguments
• ex - text editor
• exec - execute commands and open, close, or copy file descriptors
• execl(), environ, execle, execlp, execv, execve, execvp, fexecve - execute a file
• execle(), environ, execl, execlp, execv, execve, execvp, fexecve - execute a file
• execlp(), environ, execl, execle, execv, execve, execvp, fexecve - execute a file
• execv(), environ, execl, execle, execlp, execve, execvp, fexecve - execute a file
• execve(), environ, execl, execle, execlp, execv, execvp, fexecve - execute a file
• execvp(), environ, execl, execle, execlp, execv, execve, fexecve - execute a file
• exit - cause the shell to exit
• exit() - terminate a process
• exp(), expf, expl - exponential function
• exp2(), exp2f, exp2l - exponential base 2 functions
• exp2f(), exp2, exp2l - exponential base 2 functions
• exp2l(), exp2, exp2f - exponential base 2 functions
• expand - convert tabs to spaces
• expf(), exp, expl - exponential function
• expl(), exp, expf - exponential function
• expm1(), expm1f, expm1l - compute exponential functions
• expm1f(), expm1, expm1l - compute exponential functions
• expm1l(), expm1, expm1f - compute exponential functions
• export - set the export attribute for variables
• expr - evaluate arguments as an expression

• Effective Group ID
• Effective User ID
• Eight-Bit Transparency
• Empty Directory
• Empty Line
• Empty String (or Null String)
• Empty Wide-Character String
• Encoding Rule
• Entire Regular Expression
• Environment Variable Definition
• Environment Variables
• Epoch
• Equivalence Class
• Era
• Event Management
• Executable File
• Execute
• Execution Time Monitoring
• Execution Time
• Expand
• Extended Regular Expression (ERE)
• Extended Regular Expressions
• Extended Security Controls
• Extended Security Controls