10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I need to figure out how many times a location (columns 1 and 2) is present within a group of files. I figured using a combination of 'while read' and 'grep' I could count the number of instances but its not working for me.
cat file.txt | while read line
do
grep $line *08-new.txt | wc -l... (6 Replies)
Discussion started by: ncwxpanther
6 Replies
2. Red Hat
I am trying to count the number of columns in a delimited flat file. The record is tab delimited. When I use the command wc -w, I am getting unexpected results when the record contains a NULL value. I believe it is because there is a "word" missing.
The below example will return 4 words... (2 Replies)
Discussion started by: nmalencia
2 Replies
3. Shell Programming and Scripting
When I have a file like this:
0084AF aj-123-a NAME Ajay NAME Kumar Engineer
015ED6 ck-345-c
020B25 ef-456-e
027458 pq-890-p NAME Peter NAME Salob Doctor
0318F0 xy-123-x NAME Xavier Arul NAME Yesu Supervisor
0344CA de-456-d
where - The first NAME is followed by... (6 Replies)
Discussion started by: ajay41aj
6 Replies
4. UNIX for Dummies Questions & Answers
I'd like to list all userid's on the system that have a .bashrc file in their home directory with a command like "cat /etc/passwd | grep -f", however I'm not quite familiar with using grep. Any suggestions? (2 Replies)
Discussion started by: raidkridley
2 Replies
5. Shell Programming and Scripting
I am using sed to find a pattern in a line and then I want to retain the pattern + the rest of the line. How is this possible? ie:
line is: 14158 05-15-08 20:00 123-1234-A21/deliverable/dhm.a
search for 123-1234-A21 ie:
echo $line | sed 's/.*\(\{3\}-\{4\}-\{3\}\{5\}\).*/\1/'
... (1 Reply)
Discussion started by: phreezr
1 Replies
6. UNIX for Dummies Questions & Answers
from command prompt I did grep two words on a same line for eg: grep abc | grep xyz and I got tht particular line, but I want to know when I vi that file how to directly search for that particular line? I appreciate if any one can provide answer, thanks in advance (2 Replies)
Discussion started by: pkolishetty
2 Replies
7. Shell Programming and Scripting
Hi i just wanted to know is there anyway to log the keystrokes on a remote computer? For example i let my nieces play on my other computer downstairs *my computer and the one downstairs are on a LAN* and i want to see everything they type in to make sure they arent doing anything they are supposed... (1 Reply)
Discussion started by: Corrail
1 Replies
8. UNIX for Dummies Questions & Answers
Hi guys
sed -e "s/$<//g"
the $< can allow me to assign an input value to the variable right?
do the double quotes check the previous context? (1 Reply)
Discussion started by: hamoudzz
1 Replies
9. UNIX for Dummies Questions & Answers
hi guys
trying to understand what this line means
sed is a stream editor and i understand that, i have a file already selected
i want to edit so i use -e
sed -e
the next stesp is s/$*
s is a subsititute replacement
sed -e s/$*//g
$ is in reference of the last line
/g makes it... (2 Replies)
Discussion started by: hamoudzz
2 Replies
10. UNIX for Dummies Questions & Answers
Hello There!
I am trying to write this SIMPLE script in Bourne Shell but I keep on getting syntax errors. Can you see what I am doing wrong? I've done this before but I don't see the difference. I am simply trying to take the day of the week from our system and when the teachers sign on I want... (7 Replies)
Discussion started by: catbad
7 Replies