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[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z]

octal [See also bases]
     bases in Bash
     bases in Korn shell
od utility
OFMT variable
OFS variable 2nd
opening
     exec command
     pipes
operator error, debugging issues
operators [See also logical, conditional, arithmetic]
    arithmetic
         Bourne shell
         C shell
         expr command
         Korn shell
         let command
     awk
     Bash
     binary
     Bourne shell
     C shell
     comparison
     debugging missing
    decrement
         awk
    file testing
         Bash
    increment
         awk
     Korn shell
    logical
         Bash
         C shell
         debugging
         expression testing
         Korn shell
    precedence
         C shell
     redirection
         Bourne shell
         Korn shell
    relational
         awk
         debugging
     TC shell file testing
options
     eval command
     GNU grep examples 2nd
     grep
     invocation, Bash
     sed
     shopt command
output 2nd [See also stdout] [See also pipes]
     appending to existing file
     Bash
     Bourne shell
     C shell
     formatting
     Korn shell
     printing to screen with echo
     redirecting
    redirection
         awk 2nd
         Bash
         Bourne shell
         C shell
         Korn shell
         pipes
     separating from errors
    standard
         Bash
         Korn shell
ownership
     chown command
     shells and identity

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