General :: Compare File Timestamp In Bash?
May 6, 2010
How do I compare the timestamp of two files? I tried this but it doesn't work:
file1time=`stat -c %Y fil1.txt`
file2time=`stat -c %Y file2.txt`
[code]....
I printed both the time stamps, in order and it gives me
1273143480
1254144394
./script.sh: line 13: [1273143480: command not found
So basically if comparision is not working, I guess. Or if there is any other nice way than what I am doing, please let me know.
Edit: There was no space in between if, so changing it to this works:
if [ $file1time -gt $file2time ]
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Dec 9, 2010
how to program in bash, an i have a problem, i am trying compare values in between 2 values (from another file), so far my solution is to make a nested for loop, but that causes it to compare every value. Here is a visulization of what i want
file.a 2,3,4,5
file.b
3 5
[code]...
i want the values 2, 3, 4, 5 from file.a to be compared inbetween values 3 5, 6 9,1 2, 4 7 from file.b (var1 is the value im comparing, var2 is the less value, var 3 is the greater value)
for i in $var1
do
for k in $var2
do
[code]....
my problem with the above code is it compares EVERYINNG, not the values inbetween what i want (which is 3 5, 6 9 etc).
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Sep 30, 2010
I am writing a script to get the multiples of 2 and 3, place them in an 2 arrays, and then show the common integers. So far everything works fine till the comparision. I don't know how to compare them. Here is the code:
Code:
#!/bin/bash
let num1="2"
let num2="3"
[code]...
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Mar 7, 2010
I want to compare 2 name files, for instance. I got the package foo1.tgz and the foo2.tgz. and I want a script in bash that detects foo2 is newer than foo1 and delete foo1. Can it be done for managing collection of slackware packages.
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Oct 19, 2010
I want to egrep or a grep in the squid log file .. from this time 1287483952.440 to '1287483452.440, how can I do it.
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Nov 20, 2010
I'm writing a bash script to auto run on boot in Tinycore.
This is a watered down version.
Code:
I need it to either not add the time stamp if the awk finds a duplicate or write over the time with the new time if awk finds a duplicate.
BTW this is all pretty much cut-and-paste scripting so please feel free to comment if you know a more elegant way.
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Mar 29, 2010
I am trying to write a script which compares a log file with reference file. The log file has a table, the LHS of the table are constants strings and RHS of table values changes if there are any changes in configuration.code...
Here I am looking for a script which compares test.log file ( whose RHS data-types are known prior whether it is digit or string) with test.Ref which is reference file for test.log file. It will be really helpful for me if any of you give some idea about writing this script.
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Nov 16, 2010
I have many files with info about soft, installed on remote machines.
I need to compare this file with template (soft than must be installed) and output file must content info about software that's not installed.
Code:
Code:
output must be software_name2, becouse it is not installed, but software_name3.2 is good enough becouse version is more than we need.
So, the task is to show lines that is in template and not in source, using simple regular expressions
I use grep
Code:
or
Code:
But it shows me only lines that is in source and not in template etc...
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Dec 20, 2010
I would like to compare them, in terms of amplitude, length, tempo, ... Which program could basically analyse them giving an sufficient output data
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May 23, 2011
I have a (rather large) database of mp3 track information. I also have several directories of the actual mp3s. I'm trying to write a simple bash script that will check the contents of the directories against what's in the database, and upon finding a file that isn't in the database, do something.
Here's what I have so far:
Code:
The trouble I'm having (in the sample directory of "/mnt/music/B/Beatles, The/" the file "Beatles, The - Taxman.mp3" isn't in the database.) is getting it to actually trigger an error when an entry isn't in the database.
Once triggering on a non-entered file is working, any way to get it to traverse the entire /mnt/music hierarchy?
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Jan 18, 2011
I have a file like below
ADP_Comment- 4758
ADP_Comment-is missing
cbdkbckd- 46983
[code]...
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Oct 20, 2010
Have a bash script which contains a line like this:
if [[ ${array[${last}]} =~ "screenpc.PRODUCTION.*" ]]
which WORKED as expected in bash 4.0.33 and now fails in 4.1.2
Instrumented the script to print the value of the left-hand side and it is exactly what is expected.
As noted above, this has been working fine until we installed Fedora 13 (kernel 2.6.33), and now it fails.
Tried setting shell 'extglob' to On with same results.
Did something change? Are there other shell/bash options that need to be set?this has the whole installation stopped!
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Nov 29, 2010
I create a bash script that writes another bash file. But in the generated bash file I want to write a bash command in the file and not executing it.Here's my bash file:
Code:
#!/bin/bash
cat > ~/generateGridmix2data.sh << END
[code]...
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Apr 13, 2010
I'm using Linux Mint 8 64bit with Google Chrome Unstable (same problem with beta).When a video is playing, the time elapsed and total time stay on the screen:Is there a way to make this disappear
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Apr 23, 2010
Cannot sudo and gets this message: timestamp too far in the future. I don't have gui interface.
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May 20, 2011
I got a file with a list of subnets like this:
10.50
10.51
10.62
10.121
then I cnf=`ifconfig` thus giving me the config of the NICs.after that I want to compare the $cnf to see if the value of it is listed in the file and if it is do things.There might also be something better to use then the 'ifconfig'but it worked so I just stuck to it First I just had one subnet but now it's starting to grow and I wanna make a list instead of having them all listed in the if-statement.
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Aug 1, 2010
I noticed that file /etc/shadow changed it's timestamp.Why it is changed? Is it "normal"?
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May 27, 2010
I am looking for a way to print the timestamp of a directory using find command. I can do that for a file, but for a directory, it is printing the contents of the directory as well. Lets say there is a directory called doc, and there are more than one occurrences of that directory.
find . -name "doc" -type d -exec ls -l {} ;
This is printing the contents of all the files under doc directory as well.
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Nov 10, 2009
I have a list of locked accounts, called lockedusers, how can I with a bash script compare it to /etc/passwd on the server and print them out if they match?
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Aug 13, 2010
I am trying to compare a list of patterns from one file and grep them against another file and print out only the unique patterns. Unfortunately these files are so large that they have yet to run to completion. Here's the command that I used:
Code: grep -L -f file_one.txt file_two.txt > output.output Here's some example data:
Code:
>FQ4HLCS01BMR4N
>FQ4HLCS01BZNV6
>FQ4HLCS01B40PB
>FQ4HLCS01BT43K
>FQ4HLCS01CB736
>FQ4HLCS01BU3UM
>FQ4HLCS01BBIFQ
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Nov 20, 2010
I am using makefile to complile all C Programming files. But certain files are not getting compiled and hence its object file is not getting generated. This is happening due to files haven't been modified for a long time. It seems that compiler knows that its object file is there hence no need to complie it actually it is not.
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Jan 29, 2010
I am just trying to print the timestamp. which is not working.
#!/bin/bash
TSTAMP= date '+%d.%m.%y-%H:%M:%S'
echo "${TSTAMP}"
It is not displaying anything. What is wrong with the above commands.
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May 11, 2011
I am supposed to take some small files, and print them to a specific printer, such that the small files are concatenated into one file. The file name has to be included in the file that gets printed.
Should I be looking to concatenate the files into one file with the file names included, and then print them?
something like: -printfunction -printername < file*
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Aug 13, 2010
I have an internal hard drive and an external hard drive, both with about 350 GB of data. The data came from the same source, but over the last couple of years, different people have moved files around to different directories, and some files have been deleted. Now I want to merge all the files onto the internal hard drive. I estimate that 80% of the files on the external hard drive are the same, so I don't want to copy 290+ GB of data over when I already have it.
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Feb 22, 2011
I need to get names of all installed packages in 2 machines and save them in 2 text files, then I want to compare these 2 files to know the differences between 2 files and from that I could know the differences between 2 machines. Is it possible to do that and what program I could use?
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May 26, 2011
how to retrive every portion separately from following file name? DSA4020_frontcover_20346501_2011-05.doc
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is it possible to do with sed??
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Apr 30, 2011
I've created a bash file that calls another bash. And I would like to get the pid from the second file launched, to wait for the file to ends. The second bash file launches processes in background. How can I get the PID from the second bash file?
Here's my code:
Code:
#!/bin/bash
echo "FIRST"
./second.sh
PID=$(echo $!)
wait $PID
echo "CONTINUUING FIRST"
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Jan 26, 2011
how to update a file that is already exist in bash. so far i haven found any. I'm using parameter as my first start for the existent, copy file to a different directory.
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Sep 3, 2010
What's the difference between using > and >>? How can I use both < and > (redirection operators) in a single command?
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Jun 9, 2011
I frequently use wget to download tarballs and zip files from the web, then either untar then or gunzip them. I do:
Is there a way for me to automatically pass the zip file to tar or unzip WHILE wget-ting?
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