mirror of
https://github.com/ibm-s390-linux/s390-tools.git
synced 2026-08-05 02:14:52 +00:00
Jan Höppner
0b0960254e
There are still a few scripts using the 'which' command to determine either the full path or the mere existence of an executable. Some of these scripts might run in minimal environments where 'which' is not available due to dependency restriction. 'which' is also considered unreliable for historical implementation details. Use the POSIX defined [1] built-in 'command -v' instead to reduce package dependencies and improve reliability. [1] https://pubs.opengroup.org/onlinepubs/9699919799/ Reviewed-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
38 lines
1.2 KiB
Bash
Executable File
38 lines
1.2 KiB
Bash
Executable File
#! /bin/sh
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#
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# iucvconn_on_login - start terminal connection at login
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#
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# Shell script to connect to a Linux guest operation system
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# using the iucvconn(1) program.
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# The z/VM guest virtual machine to which iucvconn_on_login will connect
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# is the name of the Linux user that logs in.
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#
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# Copyright IBM Corp. 2008, 2017
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#
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# s390-tools is free software; you can redistribute it and/or modify
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# it under the terms of the MIT license. See LICENSE for details.
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#
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prog_name=`basename $0`
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guest_name=${USER:-`whoami 2>/dev/null`}
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terminal=lnxhvc0
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iucvconn=`command -v iucvconn 2>/dev/null`
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__error() {
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printf "$prog_name: $@\n" >&2
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exit 1
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}
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# check if we have been called with -c <name> to specify an alternate
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# terminal identifier. This can be used by ssh: "ssh -t guest@ts my_term"
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case "$1" in
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-c) test -n "$2" && terminal=$2 ;;
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esac
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test -t 1 || __error "The $prog_name program requires a terminal to run on"
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test "x$guest_name" = x && \
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__error "Failed to determine the target z/VM guest virtual machine"
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test -x "$iucvconn" || __error "Failed to run the 'iucvconn' program"
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printf "$prog_name: Connecting to $guest_name (terminal ID: $terminal)\n\n"
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exec $iucvconn $guest_name $terminal
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