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Dec 30, but i am getting only that line not the lines below it, i need the lines below the date lines tooi am giving –> grep -i “Tue Dec 30 Just use the | to separate multiple OR patterns. $ egrep 'Tech|Sales' employee.txt 100 Thomas Manager Sales $5,000 200 Jason Developer Technology $5,500 300 Raj Sysadmin Technology $7,000 500 Randy Manager Reply Link Linux Lewis December 18, 2014, 3:18 amWow, this is insanely helpful. My boss asks me to stop writing small functions and do everything in the same loop GO OUT AND VOTE more hot questions question feed about us tour help blog chat

Grep AND using -E ‘pattern1.*pattern2' There is no AND operator in grep. Isn't the BBC being extremely irresponsible in describing how to authenticate an account-related email? Say input file has Vi_beaconen_h i_beaconen_h 0 PWL( I want to print only " i_beaconen_h" If i use perl -lne ‘/ i/ and print' try.txt It return whole line If i What if you actually want to consider the beginning and ending of strings? http://askubuntu.com/questions/609382/grep-egrep-not-working-correctly

"grep -f" Not Working

Useful! For example, if LC_ALL is not set, but LC_MESSAGES is set to pt_BR, then Brazilian Portuguese is used for the LC_MESSAGES locale. This mean the pattern for somethinghere is like: should not contain double quote or the character sequence , u'I hope this is more clear.

i want to grep the date e.g. Thanks! –Wuffers Dec 20 '10 at 1:10 No problem! :-) –Andy Smith Dec 20 '10 at 1:11 add a comment| up vote 3 down vote Andy's answer is fine, sed -n "s:'./RFF(.*) (.*)-c\\$\\{COND\\}':DUMMY:gp" file Will not give me an error message, but will not match. Grep Regex Very small transformer powering a microwave oven more hot questions question feed default about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback

It uses even more extended regex: cmd | grep -P "\d{3,6}" –the_Seppi Apr 14 '15 at 22:27 add a comment| 1 Answer 1 active oldest votes up vote 2 down vote Grep Not Working In Shell Script Then pipe to filter for all pattern1 with whatever follows (in this case the pattern2). Should the other pattern be put in double quotes even if it is a single word? Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the

Link Rafael January 5, 2015, 7:35 am Thx Ramesh, just found the answer for a long lasting question. Grep Example By default, under MS-DOS and MS Windows, grep guesses the file type by looking at the contents of the first 32KB read from the file. It is not much, but it is one less line. It's free: ©2000-2016 nixCraft.

Grep Not Working In Shell Script

Subscribed! I have a directory with with txt files and some csv files which have the date included in the filename. "grep -f" Not Working sh — The Bourne shell command interpreter. Egrep In Unix Grep OR Using -E grep -E option is for extended regexp.

Similarly, it must be either at the end of the line or followed by a non-word constituent character. To specify a set or range of characters use braces. Keep reading the rest of the series:

  1. How To Use grep Command In Linux / UNIX
  2. Regular Expressions In grep
  3. The examples mentioned below will help you to understand how to use OR, AND and NOT in Linux grep command. Browse other questions tagged regex grep or ask your own question. Also see the -s or --no-messages option. -R, -r, --recursive Read all files under each directory, recursively; this is equivalent to the -d recurse option. Hotels on the Las Vegas strip: is there a commitment to gamble?

    This option has no effect on platforms other than MS-DOS and MS-Windows. -u, --unix-byte-offsets Report Unix-style byte offsets. Man Grep Line 9 has mostly ordinary spaces, but between the words ‘now:' and ‘a' is a single TAB char.)And now for my examples. Ask Ubuntu works best with JavaScript enabled current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list.

    Join them; it only takes a minute: Sign up Why doesn't this pattern work in egrep?

    1. grep removed the header lines and sed formatted the text grep -E -o -e "^[[:space:]]+[0-9]+[[:space:]]+[0-9e\+\.]+[[:space:]]+[0-9e\+\.]+" "wwwhomes.uni-bielefeld.de achim highly.txt" >grepped.txt sed -r "s/^\s*[0-9]+\s*([0-9.e+]+)\s*([0-9.e+]+)/\1,\2/" "grepped.txt" >seded.txt regex grep share|improve this question edited Oct
    2. Their names are self explanatory, and they are [:alnum:], [:alpha:], [:cntrl:], [:digit:], [:graph:], [:lower:], [:print:], [:punct:], [:space:], [:upper:], and [:xdigit:].
    3. so the rest of us can learn!!David Reply Link Tim Boyer January 19, 2012, 1:09 amUnfortunately, that seems not to work - at least in RHEL5[[email protected] ~]$ cat testgrep Test T
    4. Thanks.
    5. For example, grep -lZ outputs a zero byte after each file name instead of the usual newline.
    6. Reply Link marc February 16, 2010, 11:42 amthx for the regex examples.
    7. For example, the shell command egrep '{1' searches for the two-character string {1 instead of reporting a syntax error in the regular expression.

    Grep OR Using grep -e Using grep -e option you can pass only one parameter. Blueprint a sestina What is the meaning of "cow in the middle"? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Grep Command Reply Link Haritha September 24, 2014, 4:42 amHi,I am wondering if there is a way I can do this with egrep:I want to specify a pattern as something that does not

    The backreference \n, where n is a single digit, matches the substring previously matched by the nth parenthesized subexpression of the regular expression. I wanna exclude from the initial list only people who's name is John and who are not managers. However, --mmap can cause undefined behavior (including core dumps) if an input file shrinks while grep is operating, or if an I/O error occurs. -n, --line-number Prefix each line of output In egrep, the regular expression 010 gives a match; on the other hand, the theoretical regular expression 010 does not match 000001000 because 010 and 000001000 are not equal.

    You'll want to instead use {COND}. (Truly, using a regex to solve a problem now means you have two problems. If ACTION is recurse, grep reads all files under each directory, recursively; this is equivalent to the -r option. -e PATTERN, --regexp=PATTERN Use PATTERN as the pattern; useful to protect patterns Related commands fgrep — Filter text which matches a fixed-character string. Final edit: I needed a combination of grep and sed to get the proper data out.

    Or better: How can I replace the text as suggested by the original command? GNU grep is the default on all Linux systems. Reply Link Haritha September 27, 2014, 3:34 amWhen i search for a pattern like u"[^"]*"[^"]*"[^"]*"It can give me this :u"somethinghere", u'somethinghere' : u"somethinghere"But what I really want to check is if Issue is that the date is on one line then the related matter below it, e.g.:Mon Dec 29 02:26:06 2014 MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set Mon Dec

    Follow us on Google+ Follow us on Twitter Become a fan on Facebook Support Us Support this blog by purchasing one of my ebooks. if using bash: du -h / | egrep ‘T\t|G\t' if using zsh: (Press Control-V and then TAB.) du -h / | egrep ‘T|G' Link Aale July 10, 2013, 10:48 am Thanks… Reply Link jack April 4, 2014, 7:56 amNot sure !!! Untested examples: sed 's/foo/{bar}/' sed "s/foo/"'{bar}'"/" There are many flavours of regular expressions, and they all support different syntax.

    It matches any single character in that list; if the first character of the list is the caret ^ then it matches any character not in the list. And sure, it doesn't hurt to always quote. –sepp2k Jul 6 '10 at 11:02 1 @persistent: you can't use \d with grep/egrep; you can use its expanded form [0-9] which The following employee.txt file is used in the following examples. $ cat employee.txt 100 Thomas Manager Sales $5,000 200 Jason Developer Technology $5,500 300 Raj Sysadmin Technology $7,000 400 Nisha Manager GNU grep -E attempts to support traditional usage by assuming that { is not special if it would be the start of an invalid interval specification.

    Did Trump call Belgium a village in Europe? Link mandeep August 17, 2015, 12:48 am Good Article… Link Anonymous October 2, 2015, 4:56 am Thanks for the excellent article. See that $1!="no" ? –ghostdog74 Oct 24 '10 at 2:05 $1!=" no" white spaces :) –mna Oct 25 '10 at 20:26 add a comment| Your Answer draft saved Link Raghvendra January 10, 2014, 4:38 am Thanks for providing us such a well explain commands in details.