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1. Shell Programming and Scripting
Hi,
I have below query related to multiple file comparing
I have four files i want to compare it and contents of one file will not be presence in 3other files and if any content found then it will print the execution.
Can you please help me how to achieve it. (2 Replies)
Discussion started by: soumyamihp
2 Replies
2. Shell Programming and Scripting
I have a file containing the below data obtained after running a diff command
> abc 10
< abc 15
> xyz 02
<xyz 05
.....
Does anyone know how i can obtain output like :
previous value of abc is 10 and present value is 15
similarly for all the comparisons in the text file (10 Replies)
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3. UNIX for Dummies Questions & Answers
Hello,
I have a dat file nctilllist.dat which will be present in the directory path
"/usr/lpp/web-data/mfg/nct/file-data/nctilllist.dat"
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4. Shell Programming and Scripting
Hi,
I have two files
File1 Contents:
abc
dcf
sdc
File2 Contents:
dcf
sdc
erg
Now my program should return the contents existing in File1 but not in File2. In this case output shoud be "abc" as abc is not available in File 2. It should not return "erg" by saying it is... (4 Replies)
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4 Replies
5. Shell Programming and Scripting
Hi Gurus
I need your kind help sorting the below query
I have two text files
File1.txt
ID Name Address
101 Srinath BBB
102 Sidharth CCC
File2.txt
ID Name Address
102 Siddharth DDD
103 Suman EEE
Now the requirement is if the second file has... (0 Replies)
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6. UNIX for Advanced & Expert Users
I have two files which have primary key(s) for each row.
I need to compare both the files and produce the output in the following format.
Primary key(s),file1 value,file2 value.
Both the input files will be comma separated files.
I have accomplished this using perl, but it is... (6 Replies)
Discussion started by: gpsridhar
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7. UNIX for Dummies Questions & Answers
how can i unix compare two files??
var1 = 6499 7328 6351 7583 7573
var2 = 6499 7328 6351 7583 7777
i did:
diff $var1 $var2
and i got the output:
1c1
< 6499 7328 6351 7583 7573
---
> 6499 7328 6351 7583 7777
what can i do with it? and what does it tell me?? how can i knoe that... (2 Replies)
Discussion started by: nirnir26
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8. Shell Programming and Scripting
Hi Friends,
I have a requirement like i have two files in diffrent locations. i want to compare these two files, if both the files are same i want to return "0" else return 1.
Please help me on this.
Thanks
sreenu. (3 Replies)
Discussion started by: sreenu80
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9. UNIX for Dummies Questions & Answers
Hi,
I need to compare 2 files based on the first field in each file and output the differences to a new file.
example File 1 and File 2 both have first field as Number ie:
File 1
1252652355
1859553322
1778899562
File 2
1252652355
1859553322
So I would expect File 3 to... (2 Replies)
Discussion started by: Lagre1
2 Replies
10. UNIX for Advanced & Expert Users
Hi Guys,
Requirement: Want to compare two files, if the the content of both files is same then show "Good result" else Show "Bad Result"
I am using the following logic
if( cmp -s a b = 0 )
then
echo "Good result"
else echo "Bad result"
exit 0
fi
But this is... (1 Reply)
Discussion started by: abhishek3598
1 Replies
SYSTEMD.ENVIRONMENT-GENERATOR(7) systemd.environment-generator SYSTEMD.ENVIRONMENT-GENERATOR(7)
NAME
systemd.environment-generator - systemd environment file generators
SYNOPSIS
/lib/systemd/system-environment-generators/some-generator
/usr/lib/systemd/user-environment-generators/some-generator
/run/systemd/system-environment-generators/*
/etc/systemd/system-environment-generators/*
/usr/local/lib/systemd/system-environment-generators/*
/lib/systemd/system-environment-generators/*
/run/systemd/user-environment-generators/*
/etc/systemd/user-environment-generators/*
/usr/local/lib/systemd/user-environment-generators/*
/usr/lib/systemd/user-environment-generators/*
DESCRIPTION
Generators are small executables that live in /lib/systemd/system-environment-generators/ and other directories listed above. systemd(1)
will execute those binaries very early at the startup of each manager and at configuration reload time, before running the generators
described in systemd.generator(7) and before starting any units. Environment generators can override the environment that the manager
exports to services and other processes.
Generators are loaded from a set of paths determined during compilation, as listed above. System and user environment generators are loaded
from directories with names ending in system-environment-generators/ and user-environment-generators/, respectively. Generators found in
directories listed earlier override the ones with the same name in directories lower in the list. A symlink to /dev/null or an empty file
can be used to mask a generator, thereby preventing it from running. Please note that the order of the two directories with the highest
priority is reversed with respect to the unit load path, and generators in /run overwrite those in /etc.
After installing new generators or updating the configuration, systemctl daemon-reload may be executed. This will re-run all generators,
updating environment configuration. It will be used for any services that are started subsequently.
Environment file generators are executed similarly to unit file generators described in systemd.generator(7), with the following
differences:
o Generators are executed sequentially in the alphanumerical order of the final component of their name. The output of each generator
output is immediately parsed and used to update the environment for generators that run after that. Thus, later generators can use
and/or modify the output of earlier generators.
o Generators are run by every manager instance, their output can be different for each user.
It is recommended to use numerical prefixes for generator names to simplify ordering.
EXAMPLES
Example 1. A simple generator that extends an environment variable if a directory exists in the file system
# 50-xdg-data-dirs.sh
#!/bin/bash
# set the default value
XDG_DATA_DIRS="${XDG_DATA_DIRS:-/usr/local/share/:/usr/share}"
# add a directory if it exists
if [[ -d /opt/foo/share ]]; then
XDG_DATA_DIRS=/opt/foo/share:${XDG_DATA_DIRS}
fi
# write our output
echo XDG_DATA_DIRS=$XDG_DATA_DIRS
Example 2. A more complicated generator which reads existing configuration and mutates one variable
# 90-rearrange-path.py
#!/usr/bin/env python3
"""
Proof-of-concept systemd environment generator that makes sure that bin dirs
are always after matching sbin dirs in the path.
(Changes /sbin:/bin:/foo/bar to /bin:/sbin:/foo/bar.)
This generator shows how to override the configuration possibly created by
earlier generators. It would be easier to write in bash, but let's have it
in Python just to prove that we can, and to serve as a template for more
interesting generators.
"""
import os
import pathlib
def rearrange_bin_sbin(path):
"""Make sure any pair of .../bin, .../sbin directories is in this order
>>> rearrange_bin_sbin('/bin:/sbin:/usr/sbin:/usr/bin')
'/bin:/sbin:/usr/bin:/usr/sbin'
"""
items = [pathlib.Path(p) for p in path.split(':')]
for i in range(len(items)):
if 'sbin' in items[i].parts:
ind = items[i].parts.index('sbin')
bin = pathlib.Path(*items[i].parts[:ind], 'bin', *items[i].parts[ind+1:])
if bin in items[i+1:]:
j = i + 1 + items[i+1:].index(bin)
items[i], items[j] = items[j], items[i]
return ':'.join(p.as_posix() for p in items)
if __name__ == '__main__':
path = os.environ['PATH'] # This should be always set.
# If it's not, we'll just crash, we is OK too.
new = rearrange_bin_sbin(path)
if new != path:
print('PATH={}'.format(new))
Example 3. Debugging a generator
SYSTEMD_LOG_LEVEL=debug VAR_A=something VAR_B="something else"
/lib/systemd/system-environment-generators/path-to-generator
SEE ALSO
systemd-environment-d-generator(8), systemd.generator(7), systemd(1), systemctl(1)
systemd 237 SYSTEMD.ENVIRONMENT-GENERATOR(7)