02-05-2018
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi,
this might be a basic question...
why is that wc -c counts 1 more per line than what is there.
for example,
> cat dum1.txt
123
12
> wc -c dum1.txt
7 dum1.txt
Thanks,
Sameer. (4 Replies)
Discussion started by: ensameer
4 Replies
2. Shell Programming and Scripting
I am no Unix administrator...I live in windows land.
I wrote a script to find files of certain names and process them but was later advised to avoid checking sparse files since it would use up a lot of resources and the files I was looking for were not there.
How do I avoid doing the find on... (3 Replies)
Discussion started by: shellFun
3 Replies
3. Shell Programming and Scripting
I am looking to a solution to the following problem. I have a very large file that looks something like this:
Each group of three numbers on each line are three probabilities that sum to one.
I want to output the maximum for each group of three. So desired output would be:
or... (6 Replies)
Discussion started by: hydrabane
6 Replies
4. Shell Programming and Scripting
I have any XML ouput file(file name TABLE.xml), where the data is loaded in A SINGLE LINE, I need help in writting a ksh shell script which gives me the word counts of word <TABLE-ROW>
This is my input file.
<?xml version="1.0" encoding="UTF-8"?><!--Generated by Ascential Software... (4 Replies)
Discussion started by: pred55
4 Replies
5. UNIX for Dummies Questions & Answers
Hi all,
I want to put a check in my script to check if the same instance is already running and not finished and if not then does not allow it to run! in which part of my script I should put this? and any idea how I should write it? tx (4 Replies)
Discussion started by: messi777
4 Replies
6. Shell Programming and Scripting
Hi,
I have a script which has the below line:
ps -ef | grep ${SCRIPT_NAME} | grep ksh | grep -v grep >> /tmp/instance.tmp
When the script is invoked through CRON, I get 2 lines in instance.tmp when actually only one instance is running:
cdrd 17790 17789 0 15:14:01 ? 0:00 /bin/ksh... (8 Replies)
Discussion started by: cavallino4u
8 Replies
7. UNIX for Dummies Questions & Answers
In bash shell, how we can avoid the commands getting recorded in history file.
One way i can think of is :
export HISTSIZE=0
Is there any other way to achieve this?
Thanks (1 Reply)
Discussion started by: pandeesh
1 Replies
8. Shell Programming and Scripting
under past circumstances, id be fine running commands like this:
case 1:
printf '%s\n' "${MASSIVETEXT}" | egrep "i am on the first line"
case 2:
vprintf '%s\n' "${MASSIVETEXT}" | egrep -v "i am on the first line"
This works fine. Bit it calls external utility "egrep" and "printf". ... (5 Replies)
Discussion started by: SkySmart
5 Replies
9. Shell Programming and Scripting
Hi Gurus,
I need to remove duplicate line in file and update TRAILER (last line) record count. the file is comma delimited, field 2 is key to identify duplicated record.
I can use below command to remove duplicated. but don't know how to replace last line 2nd field to new count.
awk -F","... (11 Replies)
Discussion started by: green_k
11 Replies
LEARN ABOUT CENTOS
approx-gc
APPROX-GC(8) System Manager's Manual APPROX-GC(8)
NAME
approx-gc - garbage-collect the cache of Debian archive files
SYNOPSIS
approx-gc [OPTION]...
DESCRIPTION
approx-gc scans the cache created by approx(8) and finds files that are corrupted or no longer needed. With no options specified, these
files are listed on standard output and removed from the cache.
A corrupted file is one whose size or checksum does not match the value specified in the Packages or Sources file.
An unneeded file is one that is not referenced from any distribution's Packages or Sources file.
approx-gc may take several minutes to finish.
OPTIONS
-c file, --config file
Specify an additional configuration file. May be used multiple times.
-f, --fast
Don't perform checksum validation.
-k, --keep, -s, --simulate
Don't remove files from the cache.
-q, --quiet
Don't print file names.
-v, --verbose
Print the reason for removal of each file.
EXAMPLES
To remove all unneeded or corrupted files from the cache:
approx-gc --quiet
This is run as a weekly cron(8) job.
To list the files that would be removed from the cache, without actually doing so:
approx-gc --keep
FILES
/etc/approx/approx.conf
Configuration file for approx and related programs.
/var/cache/approx
Default cache directory for archive files.
SEE ALSO
approx.conf(5), approx(8), cron(8)
AUTHOR
Eric Cooper <ecc@cmu.edu>
May 2011 APPROX-GC(8)