sed -i.backup 's/^.\(.*\).$/\1/' filename
sed -i.backup 's/^.\(.*\)".$/\1/' filename
sed -i.backup 's/^.\(.*\)".$/\1/' filename
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About Me
- Ashok Raj
- The intent of this blog is to share my work experience and spread some smart solutions on Linux to System Administrators. I'm hoping the solutions shared in this Blog would be helpful and come as a handy for Viewers. Brief about me: I have 18+ years work experience in System and Cloud Administration domain, primarily works on VMware Cloud Products (vSphere, vCloud Director, vRealize Automation, NSX Adv. Load Balancer, vROps).
My /etc/pam.d/system-auth-ac has the below auth parameters set:
ReplyDeleteauth required pam_env.so
auth sufficient pam_fprintd.so
auth sufficient pam_unix.so nullok try_first_pass
auth requisite pam_succeed_if.so uid >= 500 quiet
auth required pam_deny.so
account required pam_unix.so
account sufficient pam_localuser.so
account sufficient pam_succeed_if.so uid < 500 quiet
account required pam_permit.so
password required pam_cracklib.so retry=3 minlen=12 difok=4
password required pam_unix.so md5 remember=12 use_authtok
#password requisite pam_cracklib.so try_first_pass retry=3 type=
#password sufficient pam_unix.so md5 shadow nullok try_first_pass use_authtok
password required pam_deny.so
session optional pam_keyinit.so revoke
session required pam_limits.so
session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session required pam_unix.so
I want to edit highlighted lines from the file by using function.
auth required pam_env.so
auth required pam_tally2.so onerr=fail file=/var/log/faillog deny=6 unlock_time=3600
auth sufficient pam_fprintd.so
auth sufficient pam_unix.so nullok try_first_pass
auth requisite pam_succeed_if.so uid >= 500 quiet
auth required pam_deny.so
account required pam_unix.so
account required pam_tally2.so file=/var/log/faillog
account sufficient pam_localuser.so
account sufficient pam_succeed_if.so uid < 500 quiet
account required pam_permit.so
password requisite pam_cracklib.so try_first_pass retry=3 minlen=8 lcredit=-1 dcredit=1 difok=4 maxrepeat=2 ocredit=1 ucredit=1
password sufficient pam_unix.so shadow try_first_pass use_authtok remember=6
password required pam_deny.so
session optional pam_keyinit.so revoke
session required pam_limits.so
session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session required pam_unix.so
Function used to edit lines from script: shows error, we also need to add all lines in this function.
#! /bin/bash
grep "pam_tally2" /etc/pam.d/system-auth-ac &> /dev/null
if [ $? -ne 0 ];
then
sed -i '/^[ ]*auth[ ]*required[ ]*pam_env.so/aauth\trequired\tpam_tally2.so onerr=failfile=/var/log/failog deny=6 unlock_time=3600' /etc/pam.d/system-auth-ac
else
sed -i 's/.*pam_tally2.*/auth\trequired\tpam_tally2.so onerr=failfile=/var/log/faillog deny=6 unlock_time=3600/1' /etc/pam.d/system-auth-ac
fi
My task is to edit these lines from pam.d/system/auth-ac file
pam_tally2.so onerr=fail file=/var/log/faillog deny=6 unlock_time=3600
account required pam_tally2.so file=/var/log/faillog
password requisite pam_cracklib.so try_first_pass retry=3 minlen=8 lcredit=-1 dcredit=1 difok=4 maxrepeat=2 ocredit=1 ucredit=1
password sufficient pam_unix.so shadow try_first_pass use_authtok remember=6
need help
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