Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Find missing string with bash

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Find missing string with bash
# 1  
Old 05-19-2011
Find missing string with bash
If I have a file called file A with a list of filenames. How do I find all the filenames in file A that aren't contained in file B?

I want to use bash scripting.
# 2  
Old 05-19-2011
Quote:
Originally Posted by locoroco
If I have a file called file A with a list of filenames. How do I find all the filenames in file A that aren't contained in file B?

I want to use bash scripting.
Smilie Why not grep ?
Code:
grep -vf B A

# 3  
Old 05-19-2011
Code:
$> cat fileA
1
2
3
4
5
$> cat fileB
1
3
5
$> grep -vf fileB fileA
2
4

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to add missing date and time in a bash script?

Hi Again, I have a file that contains date and time for the past 2 hours. What i need is add missing date and time in a file. INPUT 2016-01-13 01:33 10 2016-01-13 01:31 10 2016-01-13 01:30 10 2016-01-13 01:29 10 2016-01-13 01:28 10 2016-01-13 01:27 10 2016-01-13 01:26 10 2016-01-13... (14 Replies)
Discussion started by: ernesto
14 Replies

2. Shell Programming and Scripting

Find missing sequence

Hi, I need to find out the missing sequence from a list. However the issue is there is not a fixed start and end, it depends on the generation of files. For eg, it might start with 4000 and end with 9000. Based on this, I need a script which greps the start and end sequence from the... (3 Replies)
Discussion started by: danish0909
3 Replies

3. Shell Programming and Scripting

bash script to find date based on search string for continuesly updating file

Hi All, I am very new to UNIX and I have tried this for a longtime now and unable to crack it.... There is a file that is continuously updating. I need to search for the string and find the date @ which it updated every day..... eg: String is "work started" The log entry is as below: ... (1 Reply)
Discussion started by: Nithz
1 Replies

4. Shell Programming and Scripting

How to cut string and find missing pattern?

i have list in file named sample.txt eg i want to cut the 3rd and 4th character i.e. 01,02,03....,24(max length is 24) and i want to find the missing sequence .and display them i.e. (15 Replies)
Discussion started by: sagar_1986
15 Replies

5. UNIX for Dummies Questions & Answers

find/xargs/*grep: find multi-line empty "try-catch" blocks - eg, missing ; not in a commented block

How can I recursively find all files in a directory and print out the file and first line number of any text blocks that match the below cases? This would seem to involve find, xargs, *grep, regex, etc. In summary, I want to find so-called empty "try-catch blocks" that do not contain code... (0 Replies)
Discussion started by: lifechamp
0 Replies

6. Shell Programming and Scripting

find: missing argument to `-exec' while redirecting using find in perl

Hi Friends, Please help me to sort out this problem, I am running this in centos o/s and whenever I run this script I am getting "find: missing argument to `-exec' " but when I run the same code in the command line I didn't find any problem. I am using perl script to run this ... (2 Replies)
Discussion started by: ramkumarselvam
2 Replies

7. Shell Programming and Scripting

How do i find the first number in each line and insert dummy string into the missing columns?

Hi, I have one input file with the following content: MY_inpfile.txt Aname1 Cname1 Cname2 1808 5 Aname2 Cname1 1802 47 Bname1 ? 1819 22 Bname2 Cname1 1784 11 Bname3 1817 9 Zname1 Cname1 1805 59 Zname2 Cname1 Cname2 Cname3 1797 27 Every line in my input file have a 4 digit... (5 Replies)
Discussion started by: Szaffy
5 Replies

8. Shell Programming and Scripting

Bash script - im missing something and cant's figure out what

I just put together a script for work that will essentially automate the migration of our Windows fileserver to my newly created Debian based SAMBA server. My script will create the necessary directories then copy the data over to my new server, after that it will set the ACL's by using... (3 Replies)
Discussion started by: binary-ninja
3 Replies

9. AIX

how to find missing files

Hi on friday one user from peoplesoft lost his file. mean he don't know he saved it or removed it. but, he need the file and it is most valuable. so i searched the file in the server, i got the some with same name on /peoplesoft/..../print directory. is these two are the same one or... (1 Reply)
Discussion started by: honeym210
1 Replies

10. Solaris

Missing init files for zsh and bash

I change my default shell to zsh but can't find the init files, .zshrc and .zlogin from /export/home and /home. The other shells init files are there:.cshrc, .profile and .login. Am I suppose to use these as templates? Also, bash_history is there but not zsh_history although zsh do keep a... (2 Replies)
Discussion started by: maag
2 Replies
Login or Register to Ask a Question