POSIX ISO/IEC 9945-2:1993 definitions 2.2.1 Terminology 2.2.1.1 application 2.2.1.2 can 2.2.1.3 conformance document 2.2.1.4 implementation 2.2.1.5 implementation defined 2.2.1.6 may 2.2.1.7 obsolescent 2.2.1.8 shall 2.2.1.9 should 2.2.1.10 system documentation 2.2.1.11 undefined 2.2.1.12 unspecified 2.2.2 General terms 2.2.2.1 absolute pathname 2.2.2.2 address space 2.2.2.3 affirmative response 2.2.2.4 2.2.2.5 alert 2.2.2.6 alias name 2.2.2.7 angle brackets 2.2.2.8 appropriate privileges 2.2.2.9 argument 2.2.2.10 asterisk 2.2.2.11 background process 2.2.2.12 background process group 2.2.2.12 background job 2.2.2.13 backquote 2.2.2.14 backslash 2.2.2.15 2.2.2.16 basename 2.2.2.17 basic regular expression 2.2.2.18 2.2.2.19 blank line 2.2.2.20 block-mode terminal 2.2.2.21 block special file 2.2.2.22 braces 2.2.2.23 brackets 2.2.2.24 BRE matching a single character 2.2.2.24 ERE matching a single character 2.2.2.25 BRE matching multiple characters 2.2.2.25 ERE matching multiple characters 2.2.2.26 built-in utility 2.2.2.26 built-in 2.2.2.27 byte 2.2.2.28 2.2.2.29 character 2.2.2.30 character class 2.2.2.31 character special file 2.2.2.32 circumflex 2.2.2.33 collating element 2.2.2.34 collation 2.2.2.35 collation sequence 2.2.2.36 column position 2.2.2.37 control operator 2.2.2.38 command 2.2.2.39 current working directory 2.2.2.40 command language interpreter 2.2.2.41 cursor position 2.2.2.42 directory 2.2.2.43 directory entry 2.2.2.43 link 2.2.2.44 display 2.2.2.45 dollar sign 2.2.2.46 dot 2.2.2.47 dot-dot 2.2.2.48 double quote 2.2.2.49 effective group ID 2.2.2.50 effective user ID 2.2.2.51 empty directory 2.2.2.52 empty line 2.2.2.53 empty string 2.2.2.53 null string 2.2.2.54 entire RE 2.2.2.55 Epoch 2.2.2.56 equivalence class 2.2.2.57 executable file 2.2.2.58 execute 2.2.2.59 expand 2.2.2.60 extended regular experession 2.2.2.61 extended security controls 2.2.2.62 feature test macro 2.2.2.63 field 2.2.2.64 FIFO special file 2.2.2.64 FIFO 2.2.2.65 file 2.2.2.66 file access permissions 2.2.2.67 file descriptor 2.2.2.68 file group class 2.2.2.69 file hieararchy 2.2.2.70 file mode 2.2.2.71 file mode bits 2.2.2.72 filename 2.2.2.73 filename portability 2.2.2.74 file offset 2.2.2.75 file other class 2.2.2.76 file owner calss 2.2.2.77 file permission bits 2.2.2.78 file serial number 2.2.2.79 fle system 2.2.2.80 file times update 2.2.2.81 file type 2.2.2.82 filter 2.2.2.83 foreground process 2.2.2.84 foreground process group 2.2.2.84 foreground job 2.2.2.85 2.2.2.86 group ID 2.2.2.87 hard link 2.2.2.88 home directory 2.2.2.89 incomplete line 2.2.2.90 interactive shell 2.2.2.91 invoke 2.2.2.92 job 2.2.2.93 job control 2.2.2.94 job control job ID 2.2.2.95 line 2.2.2.96 link 2.2.2.97 link count 2.2.2.98 locale 2.2.2.99 login 2.2.2.100 login name 2.2.2.101 matched 2.2.2.102 mode 2.2.2.103 mount point 2.2.2.104 multicharacter collating element 2.2.2.105 name 2.2.2.106 negative response 2.2.2.107 2.2.2.108 NUL 2.2.2.109 null string 2.2.2.110 number sign 2.2.2.111 object file 2.2.2.112 open file 2.2.2.113 operand 2.2.2.114 operator 2.2.2.115 option 2.2.2.116 option-argument 2.2.2.117 parameter 2.2.2.118 parent directory 2.2.2.119 parent process 2.2.2.120 parent process ID 2.2.2.121 pathname 2.2.2.122 pathname component 2.2.2.123 pathname resolution 2.2.2.124 path prefix 2.2.2.125 pattern 2.2.2.126 period 2.2.2.127 permissions 2.2.2.128 pipe 2.2.2.129 pipeline 2.2.2.130 portable character set 2.2.2.131 portable filename character set 2.2.2.132 positional parameter 2.2.2.133 printable character 2.2.2.134 privilege 2.2.2.135 process 2.2.2.136 process group 2.2.2.137 process group ID 2.2.2.138 process group leader 2.2.2.139 process ID 2.2.2.140 program 2.2.2.141 read-only file system 2.2.2.142 real group ID 2.2.2.143 real user ID 2.2.2.144 redirection 2.2.2.145 redirection operator 2.2.2.146 refresh 2.2.2.147 regular expression 2.2.2.148 regular file 2.2.2.149 relative pathname 2.2.2.150 root directory 2.2.2.151 saved set-group-ID 2.2.2.152 saved set-user-ID 2.2.2.153 screen 2.2.2.154 scroll 2.2.2.155 seconds since the Epoch 2.2.2.156 session 2.2.2.157 session leader 2.2.2.158 session lifetime 2.2.2.159 shell 2.2.2.160 Shell, The 2.2.2.161 shell script 2.2.2.162 signal 2.2.2.163 single quote 2.2.2.164 slash 2.2.2.165 source code 2.2.2.166 2.2.2.167 special character 2.2.2.168 standard error 2.2.2.169 standard input 2.2.2.170 standard output 2.2.2.171 standard utilities 2.2.2.172 stream 2.2.2.173 subshell 2.2.2.174 supplementary group ID 2.2.2.175 suspended job 2.2.2.176 system 2.2.2.177 system scheduling priority 2.2.2.178 2.2.2.179 terminal 2.2.2.179 terminal devide 2.2.2.180 text column 2.2.2.181 text file 2.2.2.182 tilde 2.2.2.183 token 2.2.2.184 user database 2.2.2.185 user ID 2.2.2.186 user name 2.2.2.187 utility 2.2.2.188 variable 2.2.2.189 variable assignment 2.2.2.189 assignment 2.2.2.190 2.2.2.191 white space 2.2.2.192 word 2.2.2.192 working directory 2.2.2.193 write 2.2.3 Abbreviations 2.2.3.1 BRE 2.2.3.2 C Standard 2.2.3.3 ERE 2.2.3.4 LC-* 2.2.3.5 POSIX.1 2.2.3.6 POSIX.2 2.2.3.7 ERE