Is There An Rgrep Alias For Mac
Grep is an application for loading and searching through large text files. Interpret text documents in any encoding supported by Mac OS X Highly optimized loading and matching of very large text files Support for textual and regular expression (PCRE) matching Threaded loading and matching to keep UI responsive at all times. Like most users, I have a bunch of aliases set up to give a default set of flags for frequently used programs. For instance, alias vim='vim -X' alias grep='grep -E' alias ls='ls -G' The problem is that if I want to use which to see where my vim/grep/ls/etc is coming from, the alias gets in the way: $ which vim vim: aliased to vim -X.
Create an alias. Aliases allow a string to be substituted for a word. An alias can be used as the first word of any simple command.
When arguments are supplied, an alias is defined for each name whose value is given. A trailing space in value causes the next word to be checked for alias
substitution when the alias is expanded.
If no value is given, (or with the -p option) alias will print a list of Aliases along with their current values. For each name in the argument list for which no value is supplied, the name and value of the alias is printed.
Alias returns true unless a name is given for which no alias has been defined.
name can not be `alias' or `unalias'.
unalias can be used to remove each name from the list of defined aliases.
Alias substitution
The shell maintains a list of aliases which can be set, unset and printed by the alias and unalias commands. After a command line is parsed into simple commands the first word of each command, left-to-right, is checked to see if it has an alias. If so, the first word is replaced by the alias. If the alias contains a history reference, it undergoes History substitution (q.v.) as though the original command were the previous input line. If the alias does not contain a history reference, the argument list is left untouched.
Thus if the alias for ls were ls -l the command ls /usr would become ls -l /usr, the argument list here being undisturbed. If the alias for lookup were grep !^ /etc/passwd' then lookup bill would become grep bill /etc/passwd.
Aliases can be used to introduce parser metasyntax. For example, alias print 'pr !* lpr' defines a command (print) which pr's its arguments to the line printer.
The first word of the replacement text is tested for aliases, but a word that is identical to an alias being expanded is not expanded a second
time. This means that you can alias ls to ls -F, for instance, and bash does not try to recursively expand the replacement text.
Making an alias permanent:
Assuming you have the BASH shell, then use your favorite text editor to edit or create a file called ~/.bash_aliases and add your alias commands.
'alias' and 'unalias' are BASH built-ins. For almost every purpose, shell functions are preferred over aliases.
Examples
Create an alias 'c' that will clear the screen:
$ alias c='clear'
Create an alias 'ls' that will change the default action of ls:
$ alias ls='ls --classify'
$ ls
$ unalias ls
More aliases for ls:
$ alias l='ls -l' #Long
$ alias la='ls -la' #Long + show all
$ alias ll='ls -lahL' #Long + show all + follow symlinks w. dest
$ alias ls-al='ls -al' #fix missing space typo
Use alias to fix missing space typos:
$ alias cd.='cd .'
$ alias .='cd .'
Display the working directory
$ alias .='echo $PWD'
Prevent accidental deletions by making rm interactive:
$ alias rm='rm -i'
Shorten apt-get installation commands:
$ alias canhaz='sudo apt-get install'
Run firefox and open a specific website:
$ alias fftr='/Applications/Firefox.app/Contents/MacOS/firefox-bin https://ss64.com'
Yaesu frg 965 manual. YAESU FRG-9600 Service manual Author: YAESU MUSEUM Subject: Receiver Keywords: YAESU FRG-9600 Created Date: 9/29/2002 10:25:46 AM. View and Download Yaesu FRG-9600 operating manual online. All band, all mode vhf/uhf scanning receivers. FRG-9600 Receiver pdf manual download. Yaesu FRG-965 SPECIFICATIONS Type: VHF/UHF receiver/scanner Frequency range: 60-905 MHz Mode: AM/FM/WFM/SSB Receiver system: N/A Sensitivity: N/A Selectivity: N/A Image rejection: N/A Voltage: 12-15 VDC Current drain: Max? MA Impedance: 50 ohms, SO-239 Dimensions (W.H.D): 180.80.220 mm Weight: 2.2 Kg Manufactured: Japan, 198x-19xx (Discontinued) Other: TV tuner front end (!). Created Date: 10/5/2010 1:15:02 PM. Search the Boat Anchor Manual Archive (BAMA) for Yaesu FRG-965 for manuals and documents (using Google) About RigReference.com aims to become the most comprehensive reference guide for ham radio equipment.
Produce a custom prompt to display which machine you are on, the current folder, and the number of the current command:
“There are many reasons why novelists write, but they all have one thing in common - a need to create an alternative world” ~ John Fowles
Related macOS commands:
env - Display, set, or remove environment variables.
echo - Display message on screen.
set - Set a shell variable.
shift - Shift positional parameters.
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Question: Can you explain how to use OR, AND and NOT operators in Unix grep command with some examples?Answer: In grep, we have options equivalent to OR and NOT operators. There is no grep AND opearator. But, you can simulate AND using patterns. The examples mentioned below will help you to understand how to use OR, AND and NOT in Linux grep command.The following employee.txt file is used in the following examples. $ cat employee.txt100 Thomas Manager Sales $5,000200 Jason Developer Technology $5,500300 Raj Sysadmin Technology $7,000400 Nisha Manager Marketing $9,500500 Randy Manager Sales $6,000You already knew that grep is extremely powerful based on these. Grep OR OperatorUse any one of the following 4 methods for grep OR.
I prefer method number 3 mentioned below for grep OR operator. Grep OR Using If you use the grep command without any option, you need to use to separate multiple patterns for the or condition.
Grep 'pattern1 pattern2' filenameFor example, grep either Tech or Sales from the employee.txt file. Without the back slash in front of the pipe, the following will not work. $ grep 'Tech Sales' employee.txt100 Thomas Manager Sales $5,000200 Jason Developer Technology $5,500300 Raj Sysadmin Technology $7,000500 Randy Manager Sales $6,000 2.
Grep OR Using -Egrep -E option is for extended regexp. If you use the grep command with -E option, you just need to use to separate multiple patterns for the or condition. Grep -E 'pattern1 pattern2' filenameFor example, grep either Tech or Sales from the employee.txt file. Just use the to separate multiple OR patterns. $ grep -E 'Tech Sales' employee.txt100 Thomas Manager Sales $5,000200 Jason Developer Technology $5,500300 Raj Sysadmin Technology $7,000500 Randy Manager Sales $6,000 3.
Grep OR Using egrepegrep is exactly same as ‘grep -E’. So, use egrep (without any option) and separate multiple patterns for the or condition. Egrep 'pattern1 pattern2' filenameFor example, grep either Tech or Sales from the employee.txt file. Just use the to separate multiple OR patterns. $ egrep 'Tech Sales' employee.txt100 Thomas Manager Sales $5,000200 Jason Developer Technology $5,500300 Raj Sysadmin Technology $7,000500 Randy Manager Sales $6,000 4. Grep OR Using grep -eUsing grep -e option you can pass only one parameter. Use multiple -e option in a single command to use multiple patterns for the or condition.
Grep -e pattern1 -e pattern2 filenameFor example, grep either Tech or Sales from the employee.txt file. Use multiple -e option with grep for the multiple OR patterns. $ grep -e Tech -e Sales employee.txt100 Thomas Manager Sales $5,000200 Jason Developer Technology $5,500300 Raj Sysadmin Technology $7,000500 Randy Manager Sales $6,000 Grep AND 5. Grep AND using -E ‘pattern1.pattern2’There is no AND operator in grep. But, you can simulate AND using grep -E option. Grep -E 'pattern1.pattern2' filenamegrep -E 'pattern1.pattern2 pattern2.pattern1' filenameThe following example will grep all the lines that contain both “Dev” and “Tech” in it (in the same order). $ grep -E 'Dev.Tech' employee.txt200 Jason Developer Technology $5,500The following example will grep all the lines that contain both “Manager” and “Sales” in it (in any order).
$ grep -E 'Manager.Sales Sales.Manager' employee.txtNote: Using is very powerful if you know how to use it effectively. Grep AND using Multiple grep commandYou can also use multiple grep command separated by pipe to simulate AND scenario. Grep -E 'pattern1' filename grep -E 'pattern2'The following example will grep all the lines that contain both “Manager” and “Sales” in the same line.
$ grep Manager employee.txt grep Sales100 Thomas Manager Sales $5,000500 Randy Manager Sales $6,000 Grep NOT 7. Grep NOT using grep -vUsing grep -v you can simulate the NOT conditions.v option is for invert match.
I.e It matches all the lines except the given pattern. Grep -v 'pattern1' filenameFor example, display all the lines except those that contains the keyword “Sales”. $ grep -v Sales employee.txt200 Jason Developer Technology $5,500300 Raj Sysadmin Technology $7,000400 Nisha Manager Marketing $9,500You can also combine NOT with other operator to get some powerful combinations.For example, the following will display either Manager or Developer (bot ignore Sales). $ egrep 'Manager Developer' employee.txt grep -v Sales200 Jason Developer Technology $5,500400 Nisha Manager Marketing $9,500.
I am looking for a multiple grep with NOT and AND conditions. I have a directory with with txt files and some csv files which have the date included in the filename. I want to delete the csv files that do not include today’s date.
So I am trying the code below in bash#!/bin/bashnow=$(date “+%m-%d-%Y”)dir=”/var/tmp/”for f in “$dir”/.; dols -1 grep -v.$now. grep.csv.
xargs rm -fdoneThis is not deleting anything. If I take out the grep.csv.
operator then it deletes the text files. Only the CSV files have dates on them, the text files don’t.
Any video converter mac free. HTC Evo 4G. HTC Sensation. HTC Thunderbolt.
Please advise.