08-30-2014
Please show us your shell script.
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1. Shell Programming and Scripting
Hi, everybody.
I just wonder whether there are a couple of free Linux servers running as terminals where people can practice Unix Shell Programming?
I'd like to set up one myself but unfortunatly can't do it. I can't switch to Linux now coz I run a couple of servers on my machine.
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2. News, Links, Events and Announcements
About 4 years ago I wrote this tool inspired by Rob Urban's collect tool for DEC's Tru64 Unix. What makes this tool as different as collect was in its day is its ability to run at a low overhead and collect tons of stuff. I've expanded the general concept and even include data not available in... (0 Replies)
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3. Shell Programming and Scripting
I am doing the following script in k shell
sed -i 's/FILENAME/$i/g' TEST/test$j.ctl > TEST/control$j.ctl
In the file it replaces $i for all FILENAME, it doesnot replace with the value of i. I put single quotes like below
sed -i 's/FILENAME/'$i'/g' TEST/test$j.ctl > TEST/control$j.ctl
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4. UNIX for Advanced & Expert Users
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5. UNIX for Advanced & Expert Users
Hello All,
Request any one of Unix/Linux masters to clarify on the below.
How far it is feasible to open a new ftp connection for transferring each file when there are multiple files to be sent. I have developed shell script to send all files at single stretch but some how it doesnt suit to... (3 Replies)
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6. UNIX for Dummies Questions & Answers
One of our database server is suddenly became very slow and i have no clue what to do .Please help. I m sharing the performance inforamtion regarding cpu,harddisk,ram .
########CPU Information########
Machine Uptime Information:
uptime
10:25:06 up 16:50, 1 user, load average: 5.84, 5.65,... (10 Replies)
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7. Shell Programming and Scripting
Hi,
I have been working on Sun Solaris since a long time. Recently I got to work on RH Linux. My Linux version details are:
Linux 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:48 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
I have a simple command in my shell script:
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8. Red Hat
IN solaris, for network high-availability we are using IPMP concept, can u tell me in REDHAT LINUX what we are using... also pls share good step to read & understand the that concept...
Also performance issue in linux what are step & cmd can u tell me??? (2 Replies)
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9. Shell Programming and Scripting
Hi All,
I am facing performance issue while rinning the LINUX shell script.
I have file1 and file 2. File one is the source file and file 2 is lookup file. Need to replace if the pattern is matching in file1 with file2.
The order of lookup file is important as if any match then exit... (8 Replies)
Discussion started by: ureddy
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10. Shell Programming and Scripting
Hi,
I am beginner in shell scripting. I have written a script to parse file(s) having large number of lines each having multiple comma separated strings.
But it seems like script is very slow. It took more than 30mins to parse a file with size 120MB (523564 lines), below is the script code
... (4 Replies)
Discussion started by: imrandec85
4 Replies
TEST(1) User Commands TEST(1)
NAME
test - check file types and compare values
SYNOPSIS
test EXPRESSION
test
[ EXPRESSION ]
[ ]
[ OPTION
DESCRIPTION
Exit with the status determined by EXPRESSION.
--help display this help and exit
--version
output version information and exit
An omitted EXPRESSION defaults to false. Otherwise, EXPRESSION is true or false and sets exit status. It is one of:
( EXPRESSION )
EXPRESSION is true
! EXPRESSION
EXPRESSION is false
EXPRESSION1 -a EXPRESSION2
both EXPRESSION1 and EXPRESSION2 are true
EXPRESSION1 -o EXPRESSION2
either EXPRESSION1 or EXPRESSION2 is true
-n STRING
the length of STRING is nonzero
STRING equivalent to -n STRING
-z STRING
the length of STRING is zero
STRING1 = STRING2
the strings are equal
STRING1 != STRING2
the strings are not equal
INTEGER1 -eq INTEGER2
INTEGER1 is equal to INTEGER2
INTEGER1 -ge INTEGER2
INTEGER1 is greater than or equal to INTEGER2
INTEGER1 -gt INTEGER2
INTEGER1 is greater than INTEGER2
INTEGER1 -le INTEGER2
INTEGER1 is less than or equal to INTEGER2
INTEGER1 -lt INTEGER2
INTEGER1 is less than INTEGER2
INTEGER1 -ne INTEGER2
INTEGER1 is not equal to INTEGER2
FILE1 -ef FILE2
FILE1 and FILE2 have the same device and inode numbers
FILE1 -nt FILE2
FILE1 is newer (modification date) than FILE2
FILE1 -ot FILE2
FILE1 is older than FILE2
-b FILE
FILE exists and is block special
-c FILE
FILE exists and is character special
-d FILE
FILE exists and is a directory
-e FILE
FILE exists
-f FILE
FILE exists and is a regular file
-g FILE
FILE exists and is set-group-ID
-G FILE
FILE exists and is owned by the effective group ID
-h FILE
FILE exists and is a symbolic link (same as -L)
-k FILE
FILE exists and has its sticky bit set
-L FILE
FILE exists and is a symbolic link (same as -h)
-O FILE
FILE exists and is owned by the effective user ID
-p FILE
FILE exists and is a named pipe
-r FILE
FILE exists and read permission is granted
-s FILE
FILE exists and has a size greater than zero
-S FILE
FILE exists and is a socket
-t FD file descriptor FD is opened on a terminal
-u FILE
FILE exists and its set-user-ID bit is set
-w FILE
FILE exists and write permission is granted
-x FILE
FILE exists and execute (or search) permission is granted
Except for -h and -L, all FILE-related tests dereference symbolic links. Beware that parentheses need to be escaped (e.g., by backslashes)
for shells. INTEGER may also be -l STRING, which evaluates to the length of STRING.
NOTE: [ honors the --help and --version options, but test does not. test treats each of those as it treats any other nonempty STRING.
NOTE: your shell may have its own version of test and/or [, which usually supersedes the version described here. Please refer to your
shell's documentation for details about the options it supports.
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report test translation bugs to <http://translationproject.org/team/>
AUTHOR
Written by Kevin Braunsdorf and Matthew Bradburn.
COPYRIGHT
Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for test is maintained as a Texinfo manual. If the info and test programs are properly installed at your site, the
command
info coreutils 'test invocation'
should give you access to the complete manual.
GNU coreutils 8.22 June 2014 TEST(1)