Bash: Get Exit Status Values of All Piped Commands
Objective: Get the exit status codes of all commands executed in a foreground pipeline (for example ‘command1 | command2 | command3’).
Tag Archives: unix
Unix / Linux: Display Read Prompt in ANSI Color
Objective: The read shell command is used to read a line from standard input with an optional prompt. How to specify ANSI color sequences for the prompt?
Unix / Linux: Bash Shell Disable History Logging
Objective: Disable command line history logging in bash shell.
Unix / Linux: Shell Stopwatch
Objective: Time an event or something using the shell on Unix or Linux.
Unix / Linux: Include Header in Grep Result
Objective: Always include the header line when using grep. In other words, do not perform pattern matching on the header, but only perform pattern matching on the body (from line 2 onwards).
Unix / Linux: Get List of Usernames from /etc/passwd
Objective: Get the list of usernames defined in the /etc/passwd file.
Unix / Linux: Read File from Line Number
Objective: Read a file from a specific line number or skip the first x numbers of lines.
Linux: Alias with Variables / Arguments
Objective: The alias command can be used to launch any command or a group of commands (inclusive of any options, arguments and redirection) by entering a pre-set string. But how to pass an argument to alias or let an alias handle a variable?
Unix / Linux: Remove ANSI Escape Sequences
Objective: Remove ANSI escape sequences from a input file on UNIX / Linux.
Shell Script: Read File Line by Line
Objective: Read the contents of a file line by line in a shell script.
