Current Dir: /snap/core18/2999/usr/sbin/

[FILE] aa-remove-unknown [ edit | delete | rename ]
[FILE] aa-status [ edit | delete | rename ]
[FILE] add-shell [ edit | delete | rename ]
[FILE] addgroup [ edit | delete | rename ]
[FILE] adduser [ edit | delete | rename ]
[FILE] apparmor_status [ edit | delete | rename ]
[FILE] arpd [ edit | delete | rename ]
[FILE] chgpasswd [ edit | delete | rename ]
[FILE] chmem [ edit | delete | rename ]
[FILE] chpasswd [ edit | delete | rename ]
[FILE] chroot [ edit | delete | rename ]
[FILE] cpgr [ edit | delete | rename ]
[FILE] cppw [ edit | delete | rename ]
[FILE] delgroup [ edit | delete | rename ]
[FILE] deluser [ edit | delete | rename ]
[FILE] e2freefrag [ edit | delete | rename ]
[FILE] e4crypt [ edit | delete | rename ]
[FILE] e4defrag [ edit | delete | rename ]
[FILE] faillock [ edit | delete | rename ]
[FILE] fdformat [ edit | delete | rename ]
[FILE] filefrag [ edit | delete | rename ]
[FILE] genl [ edit | delete | rename ]
[FILE] groupadd [ edit | delete | rename ]
[FILE] groupdel [ edit | delete | rename ]
[FILE] groupmems [ edit | delete | rename ]
[FILE] groupmod [ edit | delete | rename ]
[FILE] grpck [ edit | delete | rename ]
[FILE] grpconv [ edit | delete | rename ]
[FILE] grpunconv [ edit | delete | rename ]
[FILE] iconvconfig [ edit | delete | rename ]
[FILE] invoke-rc.d [ edit | delete | rename ]
[FILE] ip6tables-apply [ edit | delete | rename ]
[FILE] iptables-apply [ edit | delete | rename ]
[FILE] ldattach [ edit | delete | rename ]
[FILE] mklost+found [ edit | delete | rename ]
[FILE] netplan [ edit | delete | rename ]
[FILE] newusers [ edit | delete | rename ]
[FILE] nfnl_osf [ edit | delete | rename ]
[FILE] nologin [ edit | delete | rename ]
[FILE] pam-auth-update [ edit | delete | rename ]
[FILE] pam_getenv [ edit | delete | rename ]
[FILE] pam_timestamp_check [ edit | delete | rename ]
[FILE] pwck [ edit | delete | rename ]
[FILE] pwconv [ edit | delete | rename ]
[FILE] pwunconv [ edit | delete | rename ]
[FILE] readprofile [ edit | delete | rename ]
[FILE] remove-shell [ edit | delete | rename ]
[FILE] rfkill [ edit | delete | rename ]
[FILE] rmt [ edit | delete | rename ]
[FILE] rmt-tar [ edit | delete | rename ]
[FILE] rtcwake [ edit | delete | rename ]
[FILE] service [ edit | delete | rename ]
[FILE] sshd [ edit | delete | rename ]
[FILE] tarcat [ edit | delete | rename ]
[FILE] tzconfig [ edit | delete | rename ]
[FILE] update-ca-certificates [ edit | delete | rename ]
[FILE] update-mime [ edit | delete | rename ]
[FILE] update-passwd [ edit | delete | rename ]
[FILE] update-rc.d [ edit | delete | rename ]
[FILE] useradd [ edit | delete | rename ]
[FILE] userdel [ edit | delete | rename ]
[FILE] usermod [ edit | delete | rename ]
[FILE] vigr [ edit | delete | rename ]
[FILE] vipw [ edit | delete | rename ]
[FILE] visudo [ edit | delete | rename ]
[FILE] zic [ edit | delete | rename ]

Viewing: /snap/core18/2999/usr/sbin/remove-shell

#!/bin/sh -e

if test $# -eq 0
then
        echo usage: $0 shellname '[shellname ...]' 1>&2
        exit 1
fi

file=/etc/shells
# I want this to be GUARANTEED to be on the same filesystem as $file
tmpfile=${file}.tmp
otmpfile=${file}.tmp2

set -o noclobber

trap "rm -f $tmpfile $otmpfile" EXIT

if ! cat $file > $tmpfile
then
        cat 1>&2 <<EOF
Either another instance of $0 is running, or it was previously interrupted.
Please examine ${tmpfile} to see if it should be moved onto ${file}.
EOF
        exit 1
fi

# this is supposed to be reliable, not pretty
for i
do
        REALDIR="$(dirname $(realpath -m $i))/$(basename $i)"
        for j in "$i" "$REALDIR"
        do
                grep -v "^${j}$" $tmpfile > $otmpfile || true
                mv $otmpfile $tmpfile
        done
done

chmod --reference=$file $tmpfile
chown --reference=$file $tmpfile

mv $tmpfile $file

trap "" EXIT
exit 0


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