awk is a language which loops over all lines by default.
So, for every single line, it runs both code blocks.
We give awk logfile twice, so it reads the same file twice. The first time it saves names for lookup. The second time, it tries to look up entries and substitute the data you wanted before printing every line.
Hi,
I want to search files/directories in /temp directory which starts with letter 'a'. How can I do that using grep command.
I can find out like ls -ltr a* but I want to use grep command like ls -ltr | grep ..... like that.
Please help.
Malay (4 Replies)
I'm having problems since few days ago, and i'm not able to make it works with a simple awk+grep script (or other way to do this).
For example, i have a input file1.txt:
cat inputfile1.txt
218299910417
1172051195
1172070231
1172073514
1183135117
1183135118
1183135119
1281440202
... (3 Replies)
Sorry for the title, I really don't know how to word this question or what to even search for. I tried "grep one match", "grep 1 match", "stop grep" on both google and here and haven't found something that helps, so here I go:
I have a file that's about 1.5 million lines long, every line looks... (3 Replies)
Hi guys, I need your help to use advance grep command, In my example below, I have 5 container which has some information on it, and I need to grep specific word "PLMNCode=454F00" which will not only grep the line contains that word, but I need to print the output for the whole container.
Input... (6 Replies)
Could someone please tell me how to search the entire man pages? I know man -k whatever searched the description but I wanna search the entire man page. (8 Replies)
Hi,
I am trying to do pattern search using grep command. But i donot know what mistake i'm doing. I am not getting the expected Result. could any one please help me out?
$ cat b.ksh
AasdjfhB
57834B
86234B
472346B
I want to print the line which is starting with either A or 8 and... (10 Replies)
Hello All,
I was wondering if there is a way to execute a command in my ".bashrc" file based on how I logged into the PC?
I was thinking maybe there is a way to check how the user (*myself) logged in, maybe somehow with the who command along with something else, but I'm not sure... I know I... (7 Replies)
I 'm writing a script to search particular strings from log files. The log file contains lines start with *. The file may contain many other lines start with *. I need to search a particular line from my log file. The grep command is working in command line , but when i run my script, Its printing... (7 Replies)
I want to search a small string in a large string and find the locations of the string. For this I used grep "string" -ob <file name where the large string is stored>. Now this gives me the locations of that string. Now how do I store these locations in a text file.
Please use CODE tags as... (7 Replies)
Discussion started by: ANKIT ROY
7 Replies
LEARN ABOUT MOJAVE
colrm
COLRM(1) BSD General Commands Manual COLRM(1)NAME
colrm -- remove columns from a file
SYNOPSIS
colrm [start [stop]]
DESCRIPTION
The colrm utility removes selected columns from the lines of a file. A column is defined as a single character in a line. Input is read
from the standard input. Output is written to the standard output.
If only the start column is specified, columns numbered less than the start column will be written. If both start and stop columns are spec-
ified, columns numbered less than the start column or greater than the stop column will be written. Column numbering starts with one, not
zero.
Tab characters increment the column count to the next multiple of eight. Backspace characters decrement the column count by one.
ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7).
EXIT STATUS
The colrm utility exits 0 on success, and >0 if an error occurs.
SEE ALSO awk(1), column(1), cut(1), paste(1)HISTORY
The colrm command appeared in 3.0BSD.
BSD August 4, 2004 BSD