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[DOC File]An A-Z Index of the Linux BASH command line
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exec Execute a command. exit Exit the shell. expand Convert tabs to spaces. export Set an environment variable. expr Evaluate expressions. false Do nothing, unsuccessfully. fdformat Low-level format a floppy disk. fdisk Partition table manipulator for Linux. fgrep Search file(s) for lines that match a fixed string
bash capture output to variable

[DOC File]M A N P A G E S - Del Mar College
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sh (Bourne shell), ksh (Korn shell), and bash (Bourne Again shell) are command and programming languages that execute commands read from a terminal or a file. rsh (Restricted shell) is a restricted version of the standard command interpreter sh; it is used to set up login names and execution environments whose capabilities are more controlled ...
bash capture output of command

[DOC File]Command line reference for Oracle, Windows, Linux and OS X
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An A-Z Index of the Linux BASH command line. alias Create an alias. awk Find and Replace text, database sort/validate/index break Exit from a loop. builtin Run a shell builtin. cal Display a calendar. case Conditionally perform a command cat Display the contents of a file. cd Change Directory
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[DOC File]Unix commands that are related to Security
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PATH Environment Variable. When running a command in a shell, the shell searches for the command using the PATH environment variable. ... is a similar story. This function opens a pipe to a new process in order to execute a command and read back any output as a file stream. This function also starts a shell in order to interpret command strings ...
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[DOC File]End of Chapter Solutions Template
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Before a user-defined variable can be used by processes that run in subshells, that variable must be _____. imported. validated by running the env command. exported. redirected to the BASH shell. Answer: c. The alias command can be used to make a shortcut to a single command…
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[DOC File]An A-Z Index of the Linux BASH command line
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exec Execute a command. exit Exit the shell. expand Convert tabs to spaces. export Set an environment variable. expr Evaluate expressions. factor Print prime factors. false Do nothing, unsuccessfully. fdformat Low-level format a floppy disk. fdisk Partition table manipulator for Linux
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[DOC File]Operating Systems Technology
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PATH – a list of directories that are checked whenever the user enters a command, this allows the user to execute some programs without having to specify the entire path. Common entries for the PATH variable include /bin where much of the linux kernel is stored, /usr/local/bin where a lot of the application software is stored, and /usr/X11R6 ...
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[DOC File]Wells, Guide to Linux Installation & Administration, 2E 0 ...
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The history command is used to. a. Display a list of previously entered commands. Entering the command !fr would do the following in the bash shell: b. Execute the most recently executed command that began with fr. To have a command executed each time any user logged in to the Linux system, you would place the command in which one of these files:
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[DOCX File]Linux Basic and Administration Commands
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11. sed -i.bak -e 's/3/4' sed1.txt - this backs up the original file and creates a new 'sed1.txt' with the modifications indicated in the command Note: Generally, to create new files, use output redirection, instead of allowing sed to write to STDOUT
bash capture output to variable

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The history command displays the history list showing the event number of every previously executed command. With bash, the complete history list is displayed, while with korn, the last 16 commands. You can specify a numeric argument to specify the number of previous commands to display, as in, history 5 (in bash) or history -5 (korn).
bash capture output of command

Bash execute command from variable