10-21-2010
Try the XPG4-compliant shell i.e. /usr/xpg4/bin/sh. It supports the $(...) syntax.
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1. Shell Programming and Scripting
I'm trying to write a simple script that takes all the .tar.gz files in a directory and verifies them by using the gzip -tv command:
for zip in *.tar.gz
do
gzip -tv $zip
if ; then #Check return code from tar
echo "File ${zip} verified OK."
exit... (4 Replies)
Discussion started by: kelldan
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2. Shell Programming and Scripting
I am trying to create a shell that asks the user to enter their name, and compare it to my own by saying we have the same name or saying my name and that they have a nice name too. Here is my script...
#!/bin/bash-x
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read name
if
then
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3. Shell Programming and Scripting
Hi guys,
I seek a solution for this action for Sun solaris.
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4. Shell Programming and Scripting
Original script written on CentOS 6.3 with GNU bash 4.1.2
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5. Shell Programming and Scripting
Hello.
In the following :
RESTORE_FF contain a file name : a_file.tar.gz
I am testing in a directory if "a_file.tar.gz" exists and or if any file like "a_file.tar.gz" exists.
So "a_file.tar.gz" will give me file exists
So "a_file.tar.gz." will give me file exists
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6. Web Development
ec2addtag --region us-west-1 vol1234 --tag Name=$nameinst;
It should execute
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Instead it thinks that Name is equal to that variable. Please help. Thanks!
Please use code tags! (0 Replies)
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7. Shell Programming and Scripting
while read line
do
mkdir $line
scp -r Docking_results/docking_$line.pdb $line/
cd /$line/
set a=`grep ENDMDL docking_'$line'.pdb | wc -l`
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foreach f (... (4 Replies)
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8. Shell Programming and Scripting
Hello,
I have seen this syntax,
{ ;;};quite often and I don't know what it means exactly.
It seems like a distinctive thing of Bash, so it's been used for the logo of the last bug,
ShellShock: All you need to know about the Bash Bug vulnerability | Symantec Connect
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9. Shell Programming and Scripting
Hello! i try to understand the art of bash scripting but unfortunately, more i try and less i understand it.
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10. Shell Programming and Scripting
I am sharing a code snippet.
for (( i=0; i<=$(( $count -1 )); i++ ))
do
first=${barr2}
search=${barr1}
echo $first
echo "loop begins"
for (( j=0; j<=5000; j++ ))
do
if } == $search ]]; then
echo $j
break;
fi
done
second=${harr2}
echo $second (2 Replies)
Discussion started by: ngabrani
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env(1) User Commands env(1)
NAME
env - set environment for command invocation
SYNOPSIS
/usr/bin/env [-i | -] [name=value...] [ utility [ arg... ]]
/usr/xpg4/bin/env [-i | -] [name=value...] [ utility [ arg... ]]
DESCRIPTION
The env utility obtains the current environment, modifies it according to its arguments, then invokes the utility named by the utility op-
erand with the modified environment.
Optional arguments are passed to utility. If no utility operand is specified, the resulting environment is written to the standard output,
with one name=value pair per line.
/usr/bin
If env executes commands with arguments, it uses the default shell /usr/bin/sh (see sh(1)).
/usr/xpg4/bin
If env executes commands with arguments, it uses /usr/xpg4/bin/sh (see ksh(1)).
OPTIONS
The following options are supported:
-i | - Ignores the environment that would otherwise be inherited from the current shell. Restricts the environment for utility to
that specified by the arguments.
OPERANDS
The following operands are supported:
name=value Arguments of the form name=value modify the execution environment, and are placed into the inherited environment before
utility is invoked.
utility The name of the utility to be invoked. If utility names any of the special shell built-in utilities, the results are unde-
fined.
arg A string to pass as an argument for the invoked utility.
EXAMPLES
Example 1: Invoking utilities with new PATH values
The following utility:
example% env -i PATH=/mybin mygrep xyz myfile
invokes the utility mygrep with a new PATH value as the only entry in its environment. In this case, PATH is used to locate mygrep, which
then must reside in /mybin.
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of env: LANG, LC_ALL, LC_CTYPE, LC_MES-
SAGES, and NLSPATH.
PATH Determine the location of the utility. If PATH is specified as a name=value operand to env, the value given shall be used in the
search for utility.
EXIT STATUS
If utility is invoked, the exit status of env is the exit status of utility. Otherwise, the env utility returns one of the following exit
values:
0 Successful completion.
1-125 An error occurred.
126 utility was found but could not be invoked.
127 utility could not be found.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
/usr/bin
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|CSI |enabled |
+-----------------------------+-----------------------------+
/usr/xpg4/bin
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWxcu4 |
+-----------------------------+-----------------------------+
|CSI |enabled |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO
ksh(1), sh(1), exec(2), profile(4), attributes(5), environ(5), standards(5)
SunOS 5.10 2 Jan 2002 env(1)