What is the main difference between grep and sed

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed and awk usage to grep a pattern 1 and with reference to this grep a pattern 2 and pattern 3

Hi , I have a file where i have modifed certain things compared to original file . The difference of the original file and modified file is as follows. # diff mir_lex.c.modified mir_lex.c.orig 3209c3209 < if(yy_current_buffer -> yy_is_our_buffer == 0) { --- >...

2. UNIX for Dummies Questions & Answers

Difference between code page used with grep and vi

Not certain the title is phrased correctly but here's the issue: I need to scrape data out of a pdf file. I ftp the file from windows to unix(solaris 10) as a binary file. Open the file in vi and search for a string, Matrix, but no joy. Then I cat the same file, pipe it to grep 'Matrix' and the...

3. Shell Programming and Scripting

Grep exact string from main string

Hi , am getting output file, it sontains the below values. ./hawk_DOM1_FIRST_ENV ./hawk_DOM2_SECOND_ENV ./hawk_DOM3_THIRD_ENV Now I need to grep the word "DOM1_FIRST_ENV","DOM2_SECOND_ENV" like that. I tired with cut -d "_". Its not working with any deleimiter. Can you please help to...

4. Linux

sed and grep

I am stranded with a problem. Please solve. How will you remove blank lines from a file using sed and grep? ( blank line contains nothing or only white spaces). I run the below commands of sed and grep but grep isn't giving output as desired. Why? sed '/^*$/d' blank grep -v "^*$" blank...

5. Programming

what is the main difference between difference between using nonatomic lseek and O_APPEND

I think both write at the end of the file ...... but is there a sharp difference between those 2 instruction ..... thank you this is my 3rd question today forgive me :D

6. Shell Programming and Scripting

Difference between 2 grep - commands

Hi, I need to know the difference between this commands: grep * *search* grep "*" *search* As far as i know does the 2nd command search for files which have a name with *search* and greps then all which have chars from a-z in the file content. But was does the first command?? Best...

7. Shell Programming and Scripting

help with SED + GREP

HI all, i have a line in a file it contains Code: one;two_1_10;two_2_10;two_3_10;three~ now i need to get the output as Code: one;two_1_abc_10;two_2_abc_10;two_3_abc_10;three~ ( 1 should be replaced with 1_abc for two__abc_10 , and one more thing the number of occurances of...

8. UNIX for Dummies Questions & Answers

Difference between grep, egrep & grep -i

Hi All, Please i need to know the difference between grep, egrep & grep -i when used to serach through a file. My platform is SunOS 5.9 & i'm using the korn shell. Regards, - divroro12 -

9. Shell Programming and Scripting

Difference between '.' and . in grep

Hi What is the difference between grep '.*' xx and grep .* xx? What grep .* xx command will do where xx is file name. Thanks Sas

10. UNIX Desktop Questions & Answers

Difference grep, egrep and fgrep

Hi All, Can anyone please explain me the difference between grep, egrep and fgrep with examples. I am new to unix environment.. Your help is highly appreciated. Regards, ravi

UNIX for Dummies Questions & Answers