08-18-2017
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1. Shell Programming and Scripting
I have a txt file like below:
testin.txt
AB
BC
CD
DE
I have the following awk script
BEGIN {flag1="N"}
/(AB)|(BC)|(CD)|(DE)/ {flag1="Y"}
END {print flag1}
>awk -f testin.awk testin.txt
Returns
Y (8 Replies)
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2. Shell Programming and Scripting
Hello world,
I was wondering if there is a nicer way to write the following code (in AWK):
awk '
FNR==NR&&$1~/^m$/{tok1=1}
FNR==NR&&$1~/^m10$/{tok1=1}
' my_file
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3. UNIX for Dummies Questions & Answers
Hi,
It can be used awk inside other Awk?. I need to get another text processing while other text process.
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Hi,
I am trying to do evaluate one numerical string after substitution.
++++++++++++++++==
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What I need = evaluate 7.04+2.3*log(0.72e-6*1.0e6)*1.9596 = 5.55941
what I am doing;
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I have the following simplified code that I am planning on putting into a larger shell script. I have been butchering it to try and make work amongst google searches and reading awk documentation.
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Hi,
Could somebody help me in understanding the following awk expression:
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Hello,
I have big files which I wanna filter them based on first column.
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Hi All,
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like ..
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LEARN ABOUT CENTOS
lchage
lchage(1) General Commands Manual lchage(1)
NAME
lchage - Display or change user password policy
SYNOPSIS
lchage [OPTION]... user
DESCRIPTION
Displays or allows changing password policy of user.
OPTIONS
-d, --date=days
Set the date of last password change to days after Jan 1 1970.
Set days to -1 to disable password expiration (i.e. to ignore --mindays, and --maxdays and related settings).
Set days to 0 to enforce password change on next login. (This also disables password expiration until the password is changed.)
-E, --expire=days
Set the account expiration date to days after Jan 1 1970. Set days to -1 to disable account expiration.
-i, --interactive
Ask all questions when connecting to the user database, even if default answers are set up in libuser configuration.
-I, --inactive=days
Disable the account after days after password expires (after the user is required to change the password). Set days to -1 to keep
the account enabled indefinitely after password expiration.
-l, --list
Only list current user's policy and make no changes.
-m, --mindays=days
Require at least days days between password changes. Set days to 0 or -1 to disable this requirement.
If this value is larger than the value set by --maxdays, the user cannot change the pasword.
-M, --maxdays=days
Require changing the password after days since last password change. Set days to -1 to disable password expiration.
-W, --warndays=days
Start warning the user days before password expires (before the user is required to change the password). Set days to 0 or -1 to
disable the warning.
EXIT STATUS
The exit status is 0 on success, nonzero on error.
NOTES
Note that "account expiration" (set by --expire) is distinct from "password expiration" (set by --maxdays). Account expiration happens on
a fixed date regardless of password changes. Password expiration is relative to the date of last password change.
libuser Nov 8 2012 lchage(1)