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Set the options for a terminal Version 2 AT&T UNIX tabs: Misc Mandatory Set terminal tabs PWB UNIX tail: Text processing Mandatory Copy the last part of a file PWB UNIX [citation needed] talk: Misc Optional (UP) Talk to another user 4.2BSD tee: Shell programming Mandatory Duplicate the standard output: Version 5 AT&T UNIX test: Shell ...
grep is a command-line utility for searching plaintext datasets for lines that match a regular expression. Its name comes from the ed command g/re/p (global regular expression search and print), which has the same effect.
lsof is a command meaning "list open files", which is used in many Unix-like systems to report a list of all open files and the processes that opened them. This open source utility was developed and supported by Victor A. Abell, the retired Associate Director of the Purdue University Computing Center.
sc is a cross-platform, free, TUI, spreadsheet and calculator application that runs on Unix and Unix-like operating systems. It has also been ported to Windows. It can be accessed through a terminal emulator, and has a simple interface and keyboard shortcuts resembling the key bindings of the Vim text editor. It can be used in a similar manner ...
The possible search criteria include a pattern to match against the filename or a time range to match against the modification time or access time of the file. By default, find returns a list of all files below the current working directory , although users can limit the search to any desired maximum number of levels under the starting directory.
grep like filter n: Next Search Match N: Previous Search Match Esc u: Turn off Match Highlighting (see -g command line option) - c Toggle option c , e.g., -i toggles option to match case in searches m c Set Mark c ' c Go to Mark c = or Ctrl+G: File information : n: Next file : p: Previous file h: Help. This is presented with less, q to quit. q
The reference count of a string is checked before mutating a string. This allows reference count 1 strings to be mutated directly whilst higher reference count strings are copied before mutation. This allows the general behaviour of old style pascal strings to be preserved whilst eliminating the cost of copying the string on every assignment.
Semgrep rules are similar to source code and do not require knowledge of a domain specific language to write. Both open source and commercial rules can be forked and customized to a user's codebase, however only commercial users are able to customize commercial rules. All users are free to fork and modify open source (community) rules. [7]