10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Hi,
Can I get some explanation around this bash redirection?
From what I have read, x < y means call the shell to redirect the output of y into x.
Does this mean that this sequence of commands is executed from right to left?
diff <(sort testfile.txt) <(sort testfile2.txt)
Thanks,
edit... (2 Replies)
Discussion started by: sand1234
2 Replies
2. Shell Programming and Scripting
#!/bin/bash
#
name=$1
type=$2
number=1
for file in ./**
do
if
then
filenumber=00$number
elif
then
filenumber=0$number
fi
tempname="$name""$filenumber"."$type"
if (4 Replies)
Discussion started by: TheGreatGizmo
4 Replies
3. Shell Programming and Scripting
Hi All,
I need an assistance with the issue below.
I wrote big script in "bash" that automatically install an LDAP on Clients.
I'd be happy to know in order to avoid duplication of entries in files,
How i can define into the script, if the specific expressions already exist in the file, do... (7 Replies)
Discussion started by: Aviel.shani
7 Replies
4. Shell Programming and Scripting
have a script that calls child scripts depending on conditions. All of the child scripts source in a common file that contains shared functions.
At the moment each script has to source this file itself, is there a way for the master script to automagically source the file for them?
For... (3 Replies)
Discussion started by: redman
3 Replies
5. Shell Programming and Scripting
Hi,
I'm basically looking to see what this line of code does:
. `dirname $0`/../config/config
Thanks. (1 Reply)
Discussion started by: cabaiste
1 Replies
6. Shell Programming and Scripting
Hi all,
I have a file that contains many lines, but only a few are of my interest, so I'm cutting it with grep + awk, and the result I get is for example
line 0
line 1
line 2
line 3
line n
Now I want to store each line in an array "cell" so I can use it later calling to
${array},... (2 Replies)
Discussion started by: TuxSax
2 Replies
7. UNIX for Dummies Questions & Answers
Hi all,
I'm new to shell scripting, but enjoying myself! :cool:
I'm trying to execute the following statement:
alias evol="ps -AH | grep evol | cut -d' ' -f2 | kill -9"
As you might guess. I'm wanting to use a single command 'evol' to kill all the processes containing the phrase 'evol' ... (4 Replies)
Discussion started by: mgrahamnz
4 Replies
8. Shell Programming and Scripting
Hello Friends,
I have a simple problem but I can't seem to find a solution, perhaps you could gimme a hand here..
I have to files
1.txt which contains the following
00
01
02
03
and 2.txt which contains the following:
20
21
22
23
All I need is to concatenate these 2 files in... (2 Replies)
Discussion started by: bashshadow1979
2 Replies
9. UNIX for Dummies Questions & Answers
Hi,
I am writing a BASH script. In a directory I have a bunch of files of various filename structures. How do I list all the filenames that begin with either a capital or lowercase A or T. Is there one command that could replace the following 4:
ls A*
ls a*
ls T*
ls t*
Thanks.
Mike (3 Replies)
Discussion started by: msb65
3 Replies
10. Shell Programming and Scripting
Hi Guys,
I found this script for monitoring the status of a services:
for i in syslogd cron; do
if && ;
then
printf "%-8s" "$i";printf " is alive=A\n"
else
printf "%-8s" "$i";printf " is not alive\n"
fi
The script is working fine except if either syslogd or cron will have a defunct... (3 Replies)
Discussion started by: itik
3 Replies
backup(1M) backup(1M)
NAME
backup - backup or archive file system
SYNOPSIS
[-archive]
DESCRIPTION
The command uses find(1) and cpio(1) to save a archive of all files that have been modified since the modification time of on the default
tape drive should be invoked periodically to ensure adequate file backup.
The option suppresses warning messages regarding optional access control list entries. backup(1M) does not backup optional access control
list entries in a file's access control list (see acl(5)). Normally, a warning message is printed for each file having optional access
control list entries.
The option causes backup to save all files, regardless of their modification date, and then update using touch(1).
prompts you to mount a new tape and continue if there is no more room on the current tape. Note that this prompting does not occur if you
are running from cron(1M).
The option causes to start a file system consistency check (without correction) after the backup is complete. For correct results, it is
important that the system be effectively single-user while is running, especially if is allowed to automatically fix whatever inconsisten-
cies it finds. does not ensure that the system is single-user.
You can edit to customize it for your system. Several local values are used that can be customized:
specifies which directories to back up recursively (usually
meaning all directories);
file name where start and finish times, block counts, and error messages
are logged;
file name whose date is the date of the last archive;
file name that is checked by
to remind the next person who logs in to change the backup tape;
file name where start and finish times and
output is logged.
You may want to make other changes, such as whether or not does automatic correction (according to its arguments), where output is
directed, other information logging, etc.
In all cases, the output from is a normal archive file (or volume) which can be read using with the option.
File Recovery
creates archive tapes with all files and directories specified relative to the root directory. When recovering files from an archive tape
created by you should be in the root directory and specify the directory path names for recovered files relative to the root directory When
specifying the directory path name for file recovery by do not precede the leading directory name with a slash. If you prefer, you can
also use with a option to determine how files and directories are named on the archive tape before attempting recovery.
WARNINGS
Refer to in cpio(1).
When runs out of tape, it sends an error to standard error and demands a new special file name from
To continue, rewind the tape, mount the new tape, type the name of the new special file at the system console, and press
If is being run unattended from cron(1M) and the tape runs out, terminates, leaving the process still waiting. Kill this process when you
return.
FILES
parameterized file names
SEE ALSO
cpio(1), find(1), touch(1), cron(1M), fbackup(1M), frecover(1M), fsck(1M), acl(5).
backup(1M)