Sponsored Content
Top Forums Shell Programming and Scripting cat in the command line doesn't match cat in the script Post 302280790 by System Shock on Tuesday 27th of January 2009 02:48:19 PM
Old 01-27-2009
... without looking at actual script and outputs you are getting, we can only guess. My guess is that you are running the script from a location different to the location where the targeted file1 is.

If, say, file1 is in /tmp, and you manually cd to /tmp and run your commands, you will get the expected result. But if your script is in, say, /home/myhome, if you don't give the script a full path to where the right file1 is and where file2 will be created, you will get something else
 

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

using 'cat' to in 'while read line'

Hi, I'm having some trouble reading a file that was 'cat' through a while loop. Can anyone suggest alternatives? what i do is cat filename|grep *.stuff while read line do echo $line ... and other commands done The cat,grep line seems to work correctly, but the script hangs when i add in... (3 Replies)
Discussion started by: chugger06
3 Replies

2. Shell Programming and Scripting

Cat'ing a multiple line file to one line

I am writing a script that is running a loop on one file to obtain records from another file. Using egrep, I am finding matching records in file b, then outputing feilds of both into another file. **************************** filea=this.txt fileb=that.txt cat $filea | while read line do... (1 Reply)
Discussion started by: djsal
1 Replies

3. UNIX for Dummies Questions & Answers

Difference between cat , cat > , cat >> and touch !!!

Hi Can anybody tell the difference between Difference between cat , cat > , cat >> and touch command in UNIX? Thanks (6 Replies)
Discussion started by: skyineyes
6 Replies

4. Shell Programming and Scripting

cat file1 read line-per-line then grep -A 15 lines down in fileb

STEP 1 # Set variable FILE=/tmp/mainfile SEARCHFILE =/tmp/searchfile # THIS IS THE MAIN FILE. cat /tmp/mainfile Interface Ethernet0/0 "outside", is up, line protocol is up Hardware is i82546GB rev03, BW 100 Mbps Full-Duplex(Full-duplex), 100 Mbps(100 Mbps) MAC address... (6 Replies)
Discussion started by: irongeekio
6 Replies

5. Shell Programming and Scripting

Using cat to match pattern start with particular date.

Hi All, version :- SunOS rdrsu1 5.10 Generic_142900-12 sun4u sparc SUNW,SPARC-Enterprise I have a requirenemet, where I have to extrace eroror start with ORA-, which match a perticular date. In below text I only extract out error coming on wed-8 and start with text like "ORA-". hope you... (4 Replies)
Discussion started by: alok.behria
4 Replies

6. Shell Programming and Scripting

for loop with whole line using cat

Hi all, I need to create loop script to read full line and append a variable to each line. cat file I need the output like below 10.0.0.1,136 1 24 048800 id N4 No_Light 10.0.0.1,137 1 25 048900 id N4 No_Light 10.0.0.1,140 1 28 048c00 id N4 No_Light 10.0.0.1,262 1 38 048e80... (13 Replies)
Discussion started by: ranjancom2000
13 Replies

7. AIX

Script to cat and dd last line!!! of each file

hi Guys, Am new to this awesome forum, and yea i need some help here asap thnx :) i have a directory with over 34000 text files, i need a script that will delete the last line of each of this file without me necessary opening the files. illustration:- file1 200 records file2 130 records... (5 Replies)
Discussion started by: eetang
5 Replies

8. UNIX for Beginners Questions & Answers

Cat command does not respect new line

Here's my script echo "1" >>hello.txt echo "2" >>hello.txt echo "3" >>hello.txt mailx -s "Check Status" #myteam@mycomp.com<hello.txt In Outlook I see EMail body as when I want it to be can you please suggest ? (29 Replies)
Discussion started by: mohtashims
29 Replies

9. Shell Programming and Scripting

Bash script: "mkdir -p" doesn't work with var(cat x)

Hello, :) I've an issue with the creation of a directory, All work without it :mad: So, below, my scripts with the debug output : #!/bin/bash # PATHS HOME_BACKUP="/home/backup" HOME_SCRIPT="/home/scripts/test/backup_server" TARGET="/var/www" # DATE DATE_Ymd=$(date +%Y-%m-%d) #... (1 Reply)
Discussion started by: Arnaudh78
1 Replies
cat(1)							      General Commands Manual							    cat(1)

Name
       cat - concatenate and print data

Syntax
       cat [ -b ] [ -e ] [ -n ] [ -s ] [ -t ] [ -u ] [ -v ] file...

Description
       The  command reads each file in sequence and displays it on the standard output.  Therefore, to display the file on the standard output you
       type:
       cat file
       To concatenate two files and place the result on the third you type:
       cat file1 file2 > file3
       To concatenate two files and append them to a third you type:
       cat file1 file2 >> file3
       If no input file is given, or if a minus sign (-) is encountered as an argument, reads from the standard input file.  Output is buffered in
       1024-byte blocks unless the standard output is a terminal, in which case it is line buffered.  The utility supports the processing of 8-bit
       characters.

Options
       -b   Ignores blank lines and precedes each output line with its line number.

       -e   Displays a dollar sign ($) at the end of each output line.

       -n   Precedes all output lines (including blank lines) with line numbers.

       -s   Squeezes adjacent blank lines from output and single spaces output.

       -t   Displays non-printing characters (including tabs) in output.  In addition to those representations used with the -v  option,  all  tab
	    characters are displayed as ^I.

       -u   Unbuffers output.

       -v   Displays  non-printing  characters (excluding tabs and newline) as the ^x.	If the character is in the range octal 0177 to octal 0241,
	    it is displayed as M-x. The delete character (octal 0177) displays as ^?.  For example, is displayed as ^X.

See Also
       cp(1), ex(1), more(1), pr(1), tail(1)

																	    cat(1)
All times are GMT -4. The time now is 01:54 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy